diff --git a/crypto/vm/db/CellHashTable.h b/crypto/vm/db/CellHashTable.h
index 7d0308b7..a251c4db 100644
--- a/crypto/vm/db/CellHashTable.h
+++ b/crypto/vm/db/CellHashTable.h
@@ -43,7 +43,7 @@ class CellHashTable {
   template <class F>
   void for_each(F &&f) {
     for (auto &info : set_) {
-      f(info);
+      f(const_cast<InfoT &>(info));
     }
   }
   template <class F>
diff --git a/crypto/vm/db/CellStorage.cpp b/crypto/vm/db/CellStorage.cpp
index a1b7365b..470c46a0 100644
--- a/crypto/vm/db/CellStorage.cpp
+++ b/crypto/vm/db/CellStorage.cpp
@@ -150,6 +150,20 @@ td::Result<CellLoader::LoadResult> CellLoader::load(td::Slice hash, bool need_da
   return res;
 }
 
+td::Result<CellLoader::LoadResult> CellLoader::load_refcnt(td::Slice hash) {
+  LoadResult res;
+  std::string serialized;
+  TRY_RESULT(get_status, reader_->get(hash, serialized));
+  if (get_status != KeyValue::GetStatus::Ok) {
+    DCHECK(get_status == KeyValue::GetStatus::NotFound);
+    return res;
+  }
+  res.status = LoadResult::Ok;
+  td::TlParser parser(serialized);
+  td::parse(res.refcnt_, parser);
+  return res;
+}
+
 CellStorer::CellStorer(KeyValue &kv) : kv_(kv) {
 }
 
diff --git a/crypto/vm/db/CellStorage.h b/crypto/vm/db/CellStorage.h
index b705b531..ba93ce20 100644
--- a/crypto/vm/db/CellStorage.h
+++ b/crypto/vm/db/CellStorage.h
@@ -48,6 +48,7 @@ class CellLoader {
   };
   CellLoader(std::shared_ptr<KeyValueReader> reader);
   td::Result<LoadResult> load(td::Slice hash, bool need_data, ExtCellCreator &ext_cell_creator);
+  td::Result<LoadResult> load_refcnt(td::Slice hash);  // This only loads refcnt_, cell_ == null
 
  private:
   std::shared_ptr<KeyValueReader> reader_;
diff --git a/crypto/vm/db/DynamicBagOfCellsDb.cpp b/crypto/vm/db/DynamicBagOfCellsDb.cpp
index 5441feea..f9fe69cb 100644
--- a/crypto/vm/db/DynamicBagOfCellsDb.cpp
+++ b/crypto/vm/db/DynamicBagOfCellsDb.cpp
@@ -27,6 +27,9 @@
 #include "td/utils/ThreadSafeCounter.h"
 
 #include "vm/cellslice.h"
+#include <queue>
+#include "td/actor/actor.h"
+#include "common/delay.h"
 
 namespace vm {
 namespace {
@@ -138,8 +141,6 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
     if (cell->get_virtualization() != 0) {
       return;
     }
-    //LOG(ERROR) << "INC";
-    //CellSlice(cell, nullptr).print_rec(std::cout);
     to_inc_.push_back(cell);
   }
   void dec(const Ref<Cell> &cell) override {
@@ -149,8 +150,6 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
     if (cell->get_virtualization() != 0) {
       return;
     }
-    //LOG(ERROR) << "DEC";
-    //CellSlice(cell, nullptr).print_rec(std::cout);
     to_dec_.push_back(cell);
   }
 
@@ -167,25 +166,20 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
     if (is_prepared_for_commit()) {
       return td::Status::OK();
     }
-    //LOG(ERROR) << "dfs_new_cells_in_db";
     for (auto &new_cell : to_inc_) {
       auto &new_cell_info = get_cell_info(new_cell);
       dfs_new_cells_in_db(new_cell_info);
     }
-    //return td::Status::OK();
-    //LOG(ERROR) << "dfs_new_cells";
     for (auto &new_cell : to_inc_) {
       auto &new_cell_info = get_cell_info(new_cell);
       dfs_new_cells(new_cell_info);
     }
 
-    //LOG(ERROR) << "dfs_old_cells";
     for (auto &old_cell : to_dec_) {
       auto &old_cell_info = get_cell_info(old_cell);
       dfs_old_cells(old_cell_info);
     }
 
-    //LOG(ERROR) << "save_diff_prepare";
     save_diff_prepare();
 
     to_inc_.clear();
@@ -363,7 +357,6 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
       info.was = true;
       visited_.push_back(&info);
     }
-    //LOG(ERROR) << "dfs new " << td::format::escaped(info.cell->hash());
 
     if (info.was_dfs_new_cells) {
       return;
@@ -384,7 +377,6 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
       info.was = true;
       visited_.push_back(&info);
     }
-    //LOG(ERROR) << "dfs old " << td::format::escaped(info.cell->hash());
 
     load_cell(info);
 
@@ -405,7 +397,6 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
   }
 
   void save_diff(CellStorer &storer) {
-    //LOG(ERROR) << hash_table_.size();
     for (auto info_ptr : visited_) {
       save_cell(*info_ptr, storer);
     }
@@ -414,7 +405,6 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
 
   void save_cell_prepare(CellInfo &info) {
     if (info.refcnt_diff == 0) {
-      //CellSlice(info.cell, nullptr).print_rec(std::cout);
       return;
     }
     load_cell(info);
@@ -450,15 +440,11 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
 
     if (info.db_refcnt == 0) {
       CHECK(info.in_db);
-      //LOG(ERROR) << "ERASE";
-      //CellSlice(NoVm(), info.cell).print_rec(std::cout);
       storer.erase(info.cell->get_hash().as_slice());
       info.in_db = false;
       hash_table_.erase(info.cell->get_hash().as_slice());
       guard.dismiss();
     } else {
-      //LOG(ERROR) << "SAVE " << info.db_refcnt;
-      //CellSlice(NoVm(), info.cell).print_rec(std::cout);
       auto loaded_cell = info.cell->load_cell().move_as_ok();
       storer.set(info.db_refcnt, *loaded_cell.data_cell);
       info.in_db = true;
@@ -482,7 +468,6 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
     CHECK(cell->is_loaded());
     vm::CellSlice cs(vm::NoVm{}, cell);  // FIXME
     for (unsigned i = 0; i < cs.size_refs(); i++) {
-      //LOG(ERROR) << "---> " << td::format::escaped(cell->ref(i)->hash());
       f(get_cell_info(cs.prefetch_ref(i)));
     }
   }
@@ -573,6 +558,177 @@ class DynamicBagOfCellsDbImpl : public DynamicBagOfCellsDb, private ExtCellCreat
                                               DynamicBocExtCellExtra{cell_db_reader_}));
     return std::move(res);
   }
+
+  struct PrepareCommitAsyncState {
+    size_t remaining_ = 0;
+    std::shared_ptr<AsyncExecutor> executor_;
+    td::Promise<td::Unit> promise_;
+
+    struct CellInfo2 {
+      CellInfo *info;
+      std::vector<CellInfo2 *> parents;
+      unsigned remaining_children = 0;
+      Cell::Hash key() const {
+        return info->key();
+      }
+      bool operator<(const CellInfo2 &other) const {
+        return key() < other.key();
+      }
+
+      friend bool operator<(const CellInfo2 &a, td::Slice b) {
+        return a.key().as_slice() < b;
+      }
+
+      friend bool operator<(td::Slice a, const CellInfo2 &b) {
+        return a < b.key().as_slice();
+      }
+    };
+
+    CellHashTable<CellInfo2> cells_;
+  };
+  std::unique_ptr<PrepareCommitAsyncState> pca_state_;
+
+  void prepare_commit_async(std::shared_ptr<AsyncExecutor> executor, td::Promise<td::Unit> promise) override {
+    if (pca_state_) {
+      promise.set_error(td::Status::Error("Other prepare_commit_async is not finished"));
+      return;
+    }
+    if (is_prepared_for_commit()) {
+      promise.set_result(td::Unit());
+      return;
+    }
+    pca_state_ = std::make_unique<PrepareCommitAsyncState>();
+    pca_state_->executor_ = std::move(executor);
+    pca_state_->promise_ = std::move(promise);
+    for (auto &new_cell : to_inc_) {
+      dfs_new_cells_in_db_async(new_cell);
+    }
+    pca_state_->cells_.for_each([&](PrepareCommitAsyncState::CellInfo2 &info) {
+      ++pca_state_->remaining_;
+      if (info.remaining_children == 0) {
+        pca_load_from_db(&info);
+      }
+    });
+    if (pca_state_->remaining_ == 0) {
+      prepare_commit_async_cont();
+    }
+  }
+
+  void dfs_new_cells_in_db_async(const td::Ref<vm::Cell> &cell, PrepareCommitAsyncState::CellInfo2 *parent = nullptr) {
+    bool exists = true;
+    pca_state_->cells_.apply(cell->get_hash().as_slice(), [&](PrepareCommitAsyncState::CellInfo2 &info) {
+      if (info.info == nullptr) {
+        exists = false;
+        info.info = &get_cell_info(cell);
+      }
+    });
+    auto info = pca_state_->cells_.get_if_exists(cell->get_hash().as_slice());
+    if (parent) {
+      info->parents.push_back(parent);
+      ++parent->remaining_children;
+    }
+    if (exists) {
+      return;
+    }
+    if (cell->is_loaded()) {
+      vm::CellSlice cs(vm::NoVm{}, cell);
+      for (unsigned i = 0; i < cs.size_refs(); i++) {
+        dfs_new_cells_in_db_async(cs.prefetch_ref(i), info);
+      }
+    }
+  }
+
+  void pca_load_from_db(PrepareCommitAsyncState::CellInfo2 *info) {
+    pca_state_->executor_->execute_async(
+        [db = this, info, executor = pca_state_->executor_, loader = *loader_]() mutable {
+          auto res = loader.load_refcnt(info->info->cell->get_hash().as_slice()).move_as_ok();
+          executor->execute_sync([db, info, res = std::move(res)]() {
+            db->pca_set_in_db(info, std::move(res));
+          });
+        });
+  }
+
+  void pca_set_in_db(PrepareCommitAsyncState::CellInfo2 *info, CellLoader::LoadResult result) {
+    info->info->sync_with_db = true;
+    if (result.status == CellLoader::LoadResult::Ok) {
+      info->info->in_db = true;
+      info->info->db_refcnt = result.refcnt();
+    } else {
+      info->info->in_db = false;
+    }
+    for (PrepareCommitAsyncState::CellInfo2 *parent_info : info->parents) {
+      if (parent_info->info->sync_with_db) {
+        continue;
+      }
+      if (!info->info->in_db) {
+        pca_set_in_db(parent_info, {});
+      } else if (--parent_info->remaining_children == 0) {
+        pca_load_from_db(parent_info);
+      }
+    }
+    if (--pca_state_->remaining_ == 0) {
+      prepare_commit_async_cont();
+    }
+  }
+
+  void prepare_commit_async_cont() {
+    for (auto &new_cell : to_inc_) {
+      auto &new_cell_info = get_cell_info(new_cell);
+      dfs_new_cells(new_cell_info);
+    }
+
+    CHECK(pca_state_->remaining_ == 0);
+    for (auto &old_cell : to_dec_) {
+      auto &old_cell_info = get_cell_info(old_cell);
+      dfs_old_cells_async(old_cell_info);
+    }
+    if (pca_state_->remaining_ == 0) {
+      prepare_commit_async_cont2();
+    }
+  }
+
+  void dfs_old_cells_async(CellInfo &info) {
+    if (!info.was) {
+      info.was = true;
+      visited_.push_back(&info);
+      if (!info.sync_with_db) {
+        ++pca_state_->remaining_;
+        load_cell_async(
+            info.cell->get_hash().as_slice(), pca_state_->executor_,
+            [executor = pca_state_->executor_, db = this, info = &info](td::Result<td::Ref<vm::DataCell>> R) {
+              R.ensure();
+              executor->execute_sync([db, info]() {
+                CHECK(info->sync_with_db);
+                db->dfs_old_cells_async(*info);
+                if (--db->pca_state_->remaining_ == 0) {
+                  db->prepare_commit_async_cont2();
+                }
+              });
+            });
+        return;
+      }
+    }
+    info.refcnt_diff--;
+    if (!info.sync_with_db) {
+      return;
+    }
+    auto new_refcnt = info.refcnt_diff + info.db_refcnt;
+    CHECK(new_refcnt >= 0);
+    if (new_refcnt != 0) {
+      return;
+    }
+
+    for_each(info, [this](auto &child_info) { dfs_old_cells_async(child_info); });
+  }
+
+  void prepare_commit_async_cont2() {
+    save_diff_prepare();
+    to_inc_.clear();
+    to_dec_.clear();
+    pca_state_->promise_.set_result(td::Unit());
+    pca_state_ = {};
+  }
+
 };
 }  // namespace
 
diff --git a/crypto/vm/db/DynamicBagOfCellsDb.h b/crypto/vm/db/DynamicBagOfCellsDb.h
index 3569208c..69cab52f 100644
--- a/crypto/vm/db/DynamicBagOfCellsDb.h
+++ b/crypto/vm/db/DynamicBagOfCellsDb.h
@@ -75,6 +75,7 @@ class DynamicBagOfCellsDb {
 
   virtual void load_cell_async(td::Slice hash, std::shared_ptr<AsyncExecutor> executor,
                                td::Promise<Ref<DataCell>> promise) = 0;
+  virtual void prepare_commit_async(std::shared_ptr<AsyncExecutor> executor, td::Promise<td::Unit> promise) = 0;
 };
 
 }  // namespace vm
diff --git a/dht-server/dht-server.cpp b/dht-server/dht-server.cpp
index 212a6fae..f729105f 100644
--- a/dht-server/dht-server.cpp
+++ b/dht-server/dht-server.cpp
@@ -170,7 +170,7 @@ ton::tl_object_ptr<ton::ton_api::engine_validator_config> Config::tl() const {
   return ton::create_tl_object<ton::ton_api::engine_validator_config>(
       out_port, std::move(addrs_vec), std::move(adnl_vec), std::move(dht_vec), std::move(val_vec),
       ton::PublicKeyHash::zero().tl(), std::move(full_node_slaves_vec), std::move(full_node_masters_vec),
-      std::move(liteserver_vec), std::move(control_vec), std::move(gc_vec));
+      nullptr, std::move(liteserver_vec), std::move(control_vec), std::move(gc_vec));
 }
 
 td::Result<bool> Config::config_add_network_addr(td::IPAddress in_ip, td::IPAddress out_ip,
diff --git a/tdutils/td/utils/OptionParser.cpp b/tdutils/td/utils/OptionParser.cpp
index b9584856..634570e1 100644
--- a/tdutils/td/utils/OptionParser.cpp
+++ b/tdutils/td/utils/OptionParser.cpp
@@ -33,7 +33,7 @@ void OptionParser::set_description(string description) {
 void OptionParser::add_option(Option::Type type, char short_key, Slice long_key, Slice description,
                               std::function<Status(Slice)> callback) {
   for (auto &option : options_) {
-    if (option.short_key == short_key || (!long_key.empty() && long_key == option.long_key)) {
+    if ((short_key != '\0' && option.short_key == short_key) || (!long_key.empty() && long_key == option.long_key)) {
       LOG(ERROR) << "Ignore duplicated option '" << short_key << "' '" << long_key << "'";
     }
   }
diff --git a/tl/generate/scheme/ton_api.tl b/tl/generate/scheme/ton_api.tl
index 643825ea..e9b41182 100644
--- a/tl/generate/scheme/ton_api.tl
+++ b/tl/generate/scheme/ton_api.tl
@@ -588,12 +588,14 @@ engine.gc ids:(vector int256) = engine.Gc;
 engine.dht.config dht:(vector engine.dht) gc:engine.gc = engine.dht.Config;
 engine.validator.fullNodeMaster port:int adnl:int256 = engine.validator.FullNodeMaster;
 engine.validator.fullNodeSlave ip:int port:int adnl:PublicKey = engine.validator.FullNodeSlave;
+engine.validator.fullNodeConfig ext_messages_broadcast_disabled:Bool = engine.validator.FullNodeConfig;
 engine.validator.config out_port:int addrs:(vector engine.Addr) adnl:(vector engine.adnl) 
         dht:(vector engine.dht)
         validators:(vector engine.validator) fullnode:int256 fullnodeslaves:(vector engine.validator.fullNodeSlave)
         fullnodemasters:(vector engine.validator.fullNodeMaster)
+        fullnodeconfig:engine.validator.fullNodeConfig
         liteservers:(vector engine.liteServer) control:(vector engine.controlInterface)
-        gc:engine.gc = engine.validator.Config; 
+        gc:engine.gc = engine.validator.Config;
 
 ---functions---
 ---types---
@@ -642,6 +644,8 @@ engine.validator.onePerfTimerStat time:int min:double avg:double max:double = en
 engine.validator.perfTimerStatsByName name:string stats:(vector engine.validator.OnePerfTimerStat) = engine.validator.PerfTimerStatsByName;
 engine.validator.perfTimerStats stats:(vector engine.validator.PerfTimerStatsByName) = engine.validator.PerfTimerStats;
 
+engine.validator.shardOutQueueSize size:int = engine.validator.ShardOutQueueSize;
+
 
 ---functions---
 
@@ -693,6 +697,8 @@ engine.validator.signShardOverlayCertificate workchain:int shard:long signed_key
 engine.validator.importShardOverlayCertificate workchain:int shard:long signed_key:engine.validator.KeyHash cert:overlay.Certificate = engine.validator.Success;
 
 engine.validator.getPerfTimerStats name:string = engine.validator.PerfTimerStats;
+engine.validator.getShardOutQueueSize flags:# block_id:tonNode.blockId dest_wc:flags.0?int dest_shard:flags.0?long = engine.validator.ShardOutQueueSize;
+engine.validator.setExtMessagesBroadcastDisabled disabled:Bool = engine.validator.Success;
 
 ---types---
 
diff --git a/tl/generate/scheme/ton_api.tlo b/tl/generate/scheme/ton_api.tlo
index 3c81ca06..702fbd6a 100644
Binary files a/tl/generate/scheme/ton_api.tlo and b/tl/generate/scheme/ton_api.tlo differ
diff --git a/validator-engine-console/validator-engine-console-query.cpp b/validator-engine-console/validator-engine-console-query.cpp
index 1aee7cc4..bd13225a 100644
--- a/validator-engine-console/validator-engine-console-query.cpp
+++ b/validator-engine-console/validator-engine-console-query.cpp
@@ -32,6 +32,7 @@
 #include "terminal/terminal.h"
 #include "td/utils/filesystem.h"
 #include "overlay/overlays.h"
+#include "ton/ton-tl.hpp"
 
 #include <cctype>
 #include <fstream>
@@ -1055,3 +1056,54 @@ td::Status GetPerfTimerStatsJsonQuery::receive(td::BufferSlice data) {
   td::TerminalIO::output(std::string("wrote stats to " + file_name_ + "\n"));
   return td::Status::OK();
 }
+
+td::Status GetShardOutQueueSizeQuery::run() {
+  TRY_RESULT_ASSIGN(block_id_.workchain, tokenizer_.get_token<int>());
+  TRY_RESULT_ASSIGN(block_id_.shard, tokenizer_.get_token<long long>());
+  TRY_RESULT_ASSIGN(block_id_.seqno, tokenizer_.get_token<int>());
+  if (!tokenizer_.endl()) {
+    ton::ShardIdFull dest;
+    TRY_RESULT_ASSIGN(dest.workchain, tokenizer_.get_token<int>());
+    TRY_RESULT_ASSIGN(dest.shard, tokenizer_.get_token<long long>());
+    dest_ = dest;
+  }
+  TRY_STATUS(tokenizer_.check_endl());
+  return td::Status::OK();
+}
+
+td::Status GetShardOutQueueSizeQuery::send() {
+  auto b = ton::create_serialize_tl_object<ton::ton_api::engine_validator_getShardOutQueueSize>(
+      dest_ ? 1 : 0, ton::create_tl_block_id_simple(block_id_), dest_ ? dest_.value().workchain : 0,
+      dest_ ? dest_.value().shard : 0);
+  td::actor::send_closure(console_, &ValidatorEngineConsole::envelope_send_query, std::move(b), create_promise());
+  return td::Status::OK();
+}
+
+td::Status GetShardOutQueueSizeQuery::receive(td::BufferSlice data) {
+  TRY_RESULT_PREFIX(f, ton::fetch_tl_object<ton::ton_api::engine_validator_shardOutQueueSize>(data.as_slice(), true),
+                    "received incorrect answer: ");
+  td::TerminalIO::out() << "Queue_size: " << f->size_ << "\n";
+  return td::Status::OK();
+}
+
+td::Status SetExtMessagesBroadcastDisabledQuery::run() {
+  TRY_RESULT(x, tokenizer_.get_token<int>());
+  if (x < 0 || x > 1) {
+    return td::Status::Error("value should be 0 or 1");
+  }
+  value = x;
+  return td::Status::OK();
+}
+
+td::Status SetExtMessagesBroadcastDisabledQuery::send() {
+  auto b = ton::create_serialize_tl_object<ton::ton_api::engine_validator_setExtMessagesBroadcastDisabled>(value);
+  td::actor::send_closure(console_, &ValidatorEngineConsole::envelope_send_query, std::move(b), create_promise());
+  return td::Status::OK();
+}
+
+td::Status SetExtMessagesBroadcastDisabledQuery::receive(td::BufferSlice data) {
+  TRY_RESULT_PREFIX(f, ton::fetch_tl_object<ton::ton_api::engine_validator_success>(data.as_slice(), true),
+                    "received incorrect answer: ");
+  td::TerminalIO::out() << "success\n";
+  return td::Status::OK();
+}
diff --git a/validator-engine-console/validator-engine-console-query.h b/validator-engine-console/validator-engine-console-query.h
index ab2141dd..b1bdac7c 100644
--- a/validator-engine-console/validator-engine-console-query.h
+++ b/validator-engine-console/validator-engine-console-query.h
@@ -33,6 +33,7 @@
 #include "td/utils/SharedSlice.h"
 #include "td/utils/port/IPAddress.h"
 #include "td/actor/actor.h"
+#include "ton/ton-types.h"
 
 #include "keys/keys.hpp"
 
@@ -1096,3 +1097,50 @@ class GetPerfTimerStatsJsonQuery : public Query {
  private:
   std::string file_name_;
 };
+
+class GetShardOutQueueSizeQuery : public Query {
+ public:
+  GetShardOutQueueSizeQuery(td::actor::ActorId<ValidatorEngineConsole> console, Tokenizer tokenizer)
+      : Query(console, std::move(tokenizer)) {
+  }
+  td::Status run() override;
+  td::Status send() override;
+  td::Status receive(td::BufferSlice data) override;
+  static std::string get_name() {
+    return "getshardoutqueuesize";
+  }
+  static std::string get_help() {
+    return "getshardoutqueuesize <wc> <shard> <seqno> [<dest_wc> <dest_shard>]\treturns number of messages in the "
+           "queue of the given shard. Destination shard is optional.";
+  }
+  std::string name() const override {
+    return get_name();
+  }
+
+ private:
+  ton::BlockId block_id_;
+  td::optional<ton::ShardIdFull> dest_;
+};
+
+class SetExtMessagesBroadcastDisabledQuery : public Query {
+ public:
+  SetExtMessagesBroadcastDisabledQuery(td::actor::ActorId<ValidatorEngineConsole> console, Tokenizer tokenizer)
+      : Query(console, std::move(tokenizer)) {
+  }
+  td::Status run() override;
+  td::Status send() override;
+  td::Status receive(td::BufferSlice data) override;
+  static std::string get_name() {
+    return "setextmessagesbroadcastdisabled";
+  }
+  static std::string get_help() {
+    return "setextmessagesbroadcastdisabled <value>\tdisable broadcasting and rebroadcasting ext messages; value is 0 "
+           "or 1.";
+  }
+  std::string name() const override {
+    return get_name();
+  }
+
+ private:
+  bool value;
+};
diff --git a/validator-engine-console/validator-engine-console.cpp b/validator-engine-console/validator-engine-console.cpp
index 5ce8526b..01acced9 100644
--- a/validator-engine-console/validator-engine-console.cpp
+++ b/validator-engine-console/validator-engine-console.cpp
@@ -141,6 +141,8 @@ void ValidatorEngineConsole::run() {
   add_query_runner(std::make_unique<QueryRunnerImpl<ImportShardOverlayCertificateQuery>>());
   add_query_runner(std::make_unique<QueryRunnerImpl<SignShardOverlayCertificateQuery>>());
   add_query_runner(std::make_unique<QueryRunnerImpl<GetPerfTimerStatsJsonQuery>>());
+  add_query_runner(std::make_unique<QueryRunnerImpl<GetShardOutQueueSizeQuery>>());
+  add_query_runner(std::make_unique<QueryRunnerImpl<SetExtMessagesBroadcastDisabledQuery>>());
 }
 
 bool ValidatorEngineConsole::envelope_send_query(td::BufferSlice query, td::Promise<td::BufferSlice> promise) {
diff --git a/validator-engine/CMakeLists.txt b/validator-engine/CMakeLists.txt
index 6c1ea7e2..d369a2c3 100644
--- a/validator-engine/CMakeLists.txt
+++ b/validator-engine/CMakeLists.txt
@@ -12,7 +12,7 @@ set(VALIDATOR_ENGINE_SOURCE
 
 add_executable(validator-engine ${VALIDATOR_ENGINE_SOURCE})
 target_link_libraries(validator-engine overlay tdutils tdactor adnl tl_api dht
-  rldp catchain validatorsession full-node validator ton_validator validator
+  rldp rldp2 catchain validatorsession full-node validator ton_validator validator
   fift-lib memprof git ${JEMALLOC_LIBRARIES})
 
 install(TARGETS validator-engine RUNTIME DESTINATION bin)
diff --git a/validator-engine/validator-engine.cpp b/validator-engine/validator-engine.cpp
index b6eb8b26..02ab42f9 100644
--- a/validator-engine/validator-engine.cpp
+++ b/validator-engine/validator-engine.cpp
@@ -69,7 +69,8 @@
 #include <limits>
 #include <set>
 #include "git.h"
-
+#include "block-auto.h"
+#include "block-parse.h"
 
 Config::Config() {
   out_port = 3278;
@@ -149,6 +150,10 @@ Config::Config(ton::ton_api::engine_validator_config &config) {
     config_add_full_node_master(s->port_, ton::PublicKeyHash{s->adnl_}).ensure();
   }
 
+  if (config.fullnodeconfig_) {
+    full_node_config = ton::validator::fullnode::FullNodeConfig(config.fullnodeconfig_);
+  }
+
   for (auto &serv : config.liteservers_) {
     config_add_lite_server(ton::PublicKeyHash{serv->id_}, serv->port_).ensure();
   }
@@ -219,6 +224,11 @@ ton::tl_object_ptr<ton::ton_api::engine_validator_config> Config::tl() const {
         ton::create_tl_object<ton::ton_api::engine_validator_fullNodeMaster>(x.first, x.second.tl()));
   }
 
+  ton::tl_object_ptr<ton::ton_api::engine_validator_fullNodeConfig> full_node_config_obj = {};
+  if (full_node_config != ton::validator::fullnode::FullNodeConfig()) {
+    full_node_config_obj = full_node_config.tl();
+  }
+
   std::vector<ton::tl_object_ptr<ton::ton_api::engine_liteServer>> liteserver_vec;
   for (auto &x : liteservers) {
     liteserver_vec.push_back(ton::create_tl_object<ton::ton_api::engine_liteServer>(x.second.tl(), x.first));
@@ -240,8 +250,8 @@ ton::tl_object_ptr<ton::ton_api::engine_validator_config> Config::tl() const {
   }
   return ton::create_tl_object<ton::ton_api::engine_validator_config>(
       out_port, std::move(addrs_vec), std::move(adnl_vec), std::move(dht_vec), std::move(val_vec), full_node.tl(),
-      std::move(full_node_slaves_vec), std::move(full_node_masters_vec), std::move(liteserver_vec),
-      std::move(control_vec), std::move(gc_vec));
+      std::move(full_node_slaves_vec), std::move(full_node_masters_vec), std::move(full_node_config_obj),
+      std::move(liteserver_vec), std::move(control_vec), std::move(gc_vec));
 }
 
 td::Result<bool> Config::config_add_network_addr(td::IPAddress in_ip, td::IPAddress out_ip,
@@ -1742,6 +1752,7 @@ void ValidatorEngine::started_dht() {
 
 void ValidatorEngine::start_rldp() {
   rldp_ = ton::rldp::Rldp::create(adnl_.get());
+  rldp2_ = ton::rldp2::Rldp::create(adnl_.get());
   started_rldp();
 }
 
@@ -1804,7 +1815,7 @@ void ValidatorEngine::start_full_node() {
     }
     full_node_ = ton::validator::fullnode::FullNode::create(
         short_id, ton::adnl::AdnlNodeIdShort{config_.full_node}, validator_options_->zero_block_id().file_hash,
-        keyring_.get(), adnl_.get(), rldp_.get(),
+        config_.full_node_config, keyring_.get(), adnl_.get(), rldp_.get(), rldp2_.get(),
         default_dht_node_.is_zero() ? td::actor::ActorId<ton::dht::Dht>{} : dht_nodes_[default_dht_node_].get(),
         overlay_manager_.get(), validator_manager_.get(), full_node_client_.get(), db_root_);
   }
@@ -3333,6 +3344,112 @@ void ValidatorEngine::run_control_query(ton::ton_api::engine_validator_getPerfTi
   td::actor::send_closure(validator_manager_, &ton::validator::ValidatorManagerInterface::prepare_perf_timer_stats, std::move(P));
 }
 
+void ValidatorEngine::run_control_query(ton::ton_api::engine_validator_getShardOutQueueSize &query,
+                                        td::BufferSlice data, ton::PublicKeyHash src, td::uint32 perm,
+                                        td::Promise<td::BufferSlice> promise) {
+  if (!(perm & ValidatorEnginePermissions::vep_default)) {
+    promise.set_value(create_control_query_error(td::Status::Error(ton::ErrorCode::error, "not authorized")));
+    return;
+  }
+
+  if (validator_manager_.empty()) {
+    promise.set_value(
+        create_control_query_error(td::Status::Error(ton::ErrorCode::notready, "validator manager not started")));
+    return;
+  }
+
+  ton::BlockId block_id = ton::create_block_id_simple(query.block_id_);
+  if (!block_id.is_valid_ext()) {
+    promise.set_value(create_control_query_error(td::Status::Error(ton::ErrorCode::error, "invalid block id")));
+    return;
+  }
+  td::optional<ton::ShardIdFull> dest;
+  if (query.flags_ & 1) {
+    dest = ton::ShardIdFull{query.dest_wc_, (ton::ShardId)query.dest_shard_};
+    if (!dest.value().is_valid_ext()) {
+      promise.set_value(create_control_query_error(td::Status::Error(ton::ErrorCode::error, "invalid shard")));
+      return;
+    }
+  }
+
+  td::actor::send_closure(
+      validator_manager_, &ton::validator::ValidatorManagerInterface::get_block_by_seqno_from_db,
+      ton::AccountIdPrefixFull{block_id.workchain, block_id.shard}, block_id.seqno,
+      [=, promise = std::move(promise),
+       manager = validator_manager_.get()](td::Result<ton::validator::ConstBlockHandle> R) mutable {
+        if (R.is_error()) {
+          promise.set_value(create_control_query_error(R.move_as_error()));
+          return;
+        }
+        auto handle = R.move_as_ok();
+        if (handle->id().id != block_id) {
+          promise.set_value(create_control_query_error(td::Status::Error(ton::ErrorCode::notready, "no such block")));
+          return;
+        }
+        td::actor::send_closure(
+            manager, &ton::validator::ValidatorManagerInterface::get_shard_state_from_db, handle,
+            [=, promise = std::move(promise)](td::Result<td::Ref<ton::validator::ShardState>> R) mutable {
+              auto res = [&]() -> td::Result<td::BufferSlice> {
+                TRY_RESULT(state, std::move(R));
+                TRY_RESULT(outq_descr, state->message_queue());
+                block::gen::OutMsgQueueInfo::Record qinfo;
+                if (!tlb::unpack_cell(outq_descr->root_cell(), qinfo)) {
+                  return td::Status::Error(ton::ErrorCode::error, "invalid message queue");
+                }
+                auto queue = std::make_unique<vm::AugmentedDictionary>(qinfo.out_queue->prefetch_ref(0), 352,
+                                                                       block::tlb::aug_OutMsgQueue);
+                if (dest) {
+                  td::BitArray<96> prefix;
+                  td::BitPtr ptr = prefix.bits();
+                  ptr.store_int(dest.value().workchain, 32);
+                  ptr.advance(32);
+                  ptr.store_uint(dest.value().shard, 64);
+                  if (!queue->cut_prefix_subdict(prefix.bits(), 32 + dest.value().pfx_len())) {
+                    return td::Status::Error(ton::ErrorCode::error, "invalid message queue");
+                  }
+                }
+                int size = 0;
+                queue->check_for_each([&](td::Ref<vm::CellSlice>, td::ConstBitPtr, int) -> bool {
+                  ++size;
+                  return true;
+                });
+                return ton::create_serialize_tl_object<ton::ton_api::engine_validator_shardOutQueueSize>(size);
+              }();
+              if (res.is_error()) {
+                promise.set_value(create_control_query_error(res.move_as_error()));
+              } else {
+                promise.set_value(res.move_as_ok());
+              }
+            });
+      });
+}
+
+void ValidatorEngine::run_control_query(ton::ton_api::engine_validator_setExtMessagesBroadcastDisabled &query, td::BufferSlice data, ton::PublicKeyHash src, td::uint32 perm,
+                                        td::Promise<td::BufferSlice> promise) {
+  if (!(perm & ValidatorEnginePermissions::vep_modify)) {
+    promise.set_value(create_control_query_error(td::Status::Error(ton::ErrorCode::error, "not authorized")));
+    return;
+  }
+  if (!started_) {
+    promise.set_value(create_control_query_error(td::Status::Error(ton::ErrorCode::notready, "not started")));
+    return;
+  }
+
+  if (config_.full_node_config.ext_messages_broadcast_disabled_ == query.disabled_) {
+    promise.set_value(ton::create_serialize_tl_object<ton::ton_api::engine_validator_success>());
+    return;
+  }
+  config_.full_node_config.ext_messages_broadcast_disabled_ = query.disabled_;
+  td::actor::send_closure(full_node_, &ton::validator::fullnode::FullNode::set_config, config_.full_node_config);
+  write_config([promise = std::move(promise)](td::Result<td::Unit> R) mutable {
+    if (R.is_error()) {
+      promise.set_value(create_control_query_error(R.move_as_error()));
+    } else {
+      promise.set_value(ton::create_serialize_tl_object<ton::ton_api::engine_validator_success>());
+    }
+  });
+}
+
 void ValidatorEngine::process_control_query(td::uint16 port, ton::adnl::AdnlNodeIdShort src,
                                             ton::adnl::AdnlNodeIdShort dst, td::BufferSlice data,
                                             td::Promise<td::BufferSlice> promise) {
diff --git a/validator-engine/validator-engine.hpp b/validator-engine/validator-engine.hpp
index 7284a5be..e2367419 100644
--- a/validator-engine/validator-engine.hpp
+++ b/validator-engine/validator-engine.hpp
@@ -30,6 +30,7 @@
 #include "adnl/adnl.h"
 #include "auto/tl/ton_api.h"
 #include "rldp/rldp.h"
+#include "rldp2/rldp.h"
 #include "dht/dht.h"
 #include "validator/manager.h"
 #include "validator/validator.h"
@@ -85,6 +86,7 @@ struct Config {
   std::vector<FullNodeSlave> full_node_slaves;
   std::map<td::int32, ton::PublicKeyHash> full_node_masters;
   std::map<td::int32, ton::PublicKeyHash> liteservers;
+  ton::validator::fullnode::FullNodeConfig full_node_config;
   std::map<td::int32, Control> controls;
   std::set<ton::PublicKeyHash> gc;
 
@@ -137,6 +139,7 @@ class ValidatorEngine : public td::actor::Actor {
   td::actor::ActorOwn<ton::adnl::AdnlNetworkManager> adnl_network_manager_;
   td::actor::ActorOwn<ton::adnl::Adnl> adnl_;
   td::actor::ActorOwn<ton::rldp::Rldp> rldp_;
+  td::actor::ActorOwn<ton::rldp2::Rldp> rldp2_;
   std::map<ton::PublicKeyHash, td::actor::ActorOwn<ton::dht::Dht>> dht_nodes_;
   ton::PublicKeyHash default_dht_node_ = ton::PublicKeyHash::zero();
   td::actor::ActorOwn<ton::overlay::Overlays> overlay_manager_;
@@ -409,6 +412,10 @@ class ValidatorEngine : public td::actor::Actor {
                          ton::PublicKeyHash src, td::uint32 perm, td::Promise<td::BufferSlice> promise);
   void run_control_query(ton::ton_api::engine_validator_getPerfTimerStats &query, td::BufferSlice data,
                          ton::PublicKeyHash src, td::uint32 perm, td::Promise<td::BufferSlice> promise);
+  void run_control_query(ton::ton_api::engine_validator_getShardOutQueueSize &query, td::BufferSlice data,
+                         ton::PublicKeyHash src, td::uint32 perm, td::Promise<td::BufferSlice> promise);
+  void run_control_query(ton::ton_api::engine_validator_setExtMessagesBroadcastDisabled &query, td::BufferSlice data,
+                         ton::PublicKeyHash src, td::uint32 perm, td::Promise<td::BufferSlice> promise);
   template <class T>
   void run_control_query(T &query, td::BufferSlice data, ton::PublicKeyHash src, td::uint32 perm,
                          td::Promise<td::BufferSlice> promise) {
diff --git a/validator-session/validator-session.cpp b/validator-session/validator-session.cpp
index 3f56e3a3..2902b082 100644
--- a/validator-session/validator-session.cpp
+++ b/validator-session/validator-session.cpp
@@ -45,8 +45,8 @@ void ValidatorSessionImpl::process_blocks(std::vector<catchain::CatChainBlock *>
   std::vector<tl_object_ptr<ton_api::validatorSession_round_Message>> msgs;
 
   if (generated_ && !sent_generated_) {
-    auto it = blocks_[0].find(generated_block_);
-    CHECK(it != blocks_[0].end());
+    auto it = blocks_.find(generated_block_);
+    CHECK(it != blocks_.end());
 
     auto &B = it->second;
     auto file_hash = sha256_bits256(B->data_);
@@ -230,13 +230,15 @@ void ValidatorSessionImpl::process_broadcast(PublicKeyHash src, td::BufferSlice
   auto block_round = static_cast<td::uint32>(candidate->round_);
   auto block_id = description().candidate_id(src_idx, candidate->root_hash_, file_hash, collated_data_file_hash);
 
-  if (block_round < cur_round_ || block_round >= cur_round_ + blocks_.size()) {
+  if ((td::int32)block_round < (td::int32)cur_round_ - MAX_PAST_ROUND_BLOCK ||
+      block_round >= cur_round_ + MAX_FUTURE_ROUND_BLOCK) {
     VLOG(VALIDATOR_SESSION_NOTICE) << this << "[node " << src << "][broadcast " << block_id
                                    << "]: bad round=" << block_round << " cur_round" << cur_round_;
     return;
   }
-  auto it = blocks_[block_round - cur_round_].find(block_id);
-  if (it != blocks_[block_round - cur_round_].end()) {
+  auto it = blocks_.find(block_id);
+  if (it != blocks_.end()) {
+    it->second->round_ = std::max<td::uint32>(it->second->round_, block_round);
     VLOG(VALIDATOR_SESSION_INFO) << this << "[node " << src << "][broadcast " << block_id << "]: duplicate";
     return;
   }
@@ -248,7 +250,7 @@ void ValidatorSessionImpl::process_broadcast(PublicKeyHash src, td::BufferSlice
     return;
   }
 
-  blocks_[block_round - cur_round_][block_id] = std::move(candidate);
+  blocks_[block_id] = std::move(candidate);
 
   VLOG(VALIDATOR_SESSION_WARNING) << this << ": received broadcast " << block_id;
   if (block_round != cur_round_) {
@@ -407,7 +409,7 @@ void ValidatorSessionImpl::generated_block(td::uint32 round, ValidatorSessionCan
 
   td::actor::send_closure(catchain_, &catchain::CatChain::send_broadcast, std::move(B));
 
-  blocks_[0].emplace(block_id, std::move(b));
+  blocks_.emplace(block_id, std::move(b));
   pending_generate_ = false;
   generated_ = true;
   generated_block_ = block_id;
@@ -507,9 +509,10 @@ void ValidatorSessionImpl::try_approve_block(const SentBlock *block) {
 
   if (block) {
     auto T = td::Timestamp::at(round_started_at_.at() + description().get_delay(block->get_src_idx()) + 2.0);
-    auto it = blocks_[0].find(block_id);
+    auto it = blocks_.find(block_id);
 
-    if (it != blocks_[0].end()) {
+    if (it != blocks_.end()) {
+      it->second->round_ = std::max<td::uint32>(it->second->round_, cur_round_);
       td::PerfWarningTimer timer{"too long block validation", 1.0};
       auto &B = it->second;
 
@@ -532,7 +535,6 @@ void ValidatorSessionImpl::try_approve_block(const SentBlock *block) {
         }
       });
       pending_approve_.insert(block_id);
-      CHECK(static_cast<td::int32>(cur_round_) == B->round_);
 
       callback_->on_candidate(cur_round_, description().get_source_public_key(block->get_src_idx()), B->root_hash_,
                               B->data_.clone(), B->collated_data_.clone(), std::move(P));
@@ -556,7 +558,7 @@ void ValidatorSessionImpl::try_approve_block(const SentBlock *block) {
 
           get_broadcast_p2p(id, block->get_file_hash(), block->get_collated_data_file_hash(),
                             description().get_source_id(block->get_src_idx()), cur_round_, block->get_root_hash(),
-                            std::move(P), td::Timestamp::in(2.0));
+                            std::move(P), td::Timestamp::in(15.0));
         } else {
           LOG(VALIDATOR_SESSION_DEBUG) << this << ": no nodes to download candidate " << block << " from";
         }
@@ -773,7 +775,7 @@ void ValidatorSessionImpl::on_new_round(td::uint32 round) {
       }
     }
 
-    auto it = blocks_[0].find(SentBlock::get_block_id(block));
+    auto it = blocks_.find(SentBlock::get_block_id(block));
     bool have_block = (bool)block;
     if (!have_block) {
       callback_->on_block_skipped(cur_round_);
@@ -788,7 +790,7 @@ void ValidatorSessionImpl::on_new_round(td::uint32 round) {
       cur_stats_.creator = description().get_source_id(block->get_src_idx());
       cur_stats_.self = description().get_source_id(local_idx());
 
-      if (it == blocks_[0].end()) {
+      if (it == blocks_.end()) {
         callback_->on_block_committed(cur_round_, description().get_source_public_key(block->get_src_idx()),
                                       block->get_root_hash(), block->get_file_hash(), td::BufferSlice(),
                                       std::move(export_sigs), std::move(export_approve_sigs), std::move(cur_stats_));
@@ -804,10 +806,14 @@ void ValidatorSessionImpl::on_new_round(td::uint32 round) {
     } else {
       stats_add_round();
     }
-    for (size_t i = 0; i < blocks_.size() - 1; i++) {
-      blocks_[i] = std::move(blocks_[i + 1]);
+    auto it2 = blocks_.begin();
+    while (it2 != blocks_.end()) {
+      if (it2->second->round_ < (td::int32)cur_round_ - MAX_PAST_ROUND_BLOCK) {
+        it2 = blocks_.erase(it2);
+      } else {
+        ++it2;
+      }
     }
-    blocks_[blocks_.size() - 1].clear();
   }
 
   round_started_at_ = td::Timestamp::now();
diff --git a/validator-session/validator-session.hpp b/validator-session/validator-session.hpp
index 54bba33d..e8274554 100644
--- a/validator-session/validator-session.hpp
+++ b/validator-session/validator-session.hpp
@@ -73,7 +73,7 @@ class ValidatorSessionImpl : public ValidatorSession {
   ValidatorSessionCandidateId signed_block_;
   td::BufferSlice signature_;
 
-  std::array<std::map<ValidatorSessionCandidateId, tl_object_ptr<ton_api::validatorSession_candidate>>, 100> blocks_;
+  std::map<ValidatorSessionCandidateId, tl_object_ptr<ton_api::validatorSession_candidate>> blocks_;
 
   catchain::CatChainSessionId unique_hash_;
 
@@ -204,6 +204,8 @@ class ValidatorSessionImpl : public ValidatorSession {
 
  private:
   static const size_t MAX_REJECT_REASON_SIZE = 1024;
+  static const td::int32 MAX_FUTURE_ROUND_BLOCK = 100;
+  static const td::int32 MAX_PAST_ROUND_BLOCK = 20;
 };
 
 }  // namespace validatorsession
diff --git a/validator/CMakeLists.txt b/validator/CMakeLists.txt
index 65d7b348..573cd8e5 100644
--- a/validator/CMakeLists.txt
+++ b/validator/CMakeLists.txt
@@ -198,5 +198,5 @@ target_link_libraries(validator-disk PRIVATE tdutils tdactor adnl rldp tl_api dh
 target_link_libraries(validator-hardfork PRIVATE tdutils tdactor adnl rldp tl_api dht tdfec
   overlay catchain validatorsession ton_crypto ton_block ton_db)
 
-target_link_libraries(full-node PRIVATE tdutils tdactor adnl rldp tl_api dht tdfec
+target_link_libraries(full-node PRIVATE tdutils tdactor adnl rldp rldp2 tl_api dht tdfec
   overlay catchain validatorsession ton_crypto ton_block ton_db)
diff --git a/validator/db/celldb.cpp b/validator/db/celldb.cpp
index e142043e..c633e395 100644
--- a/validator/db/celldb.cpp
+++ b/validator/db/celldb.cpp
@@ -33,11 +33,11 @@ class CellDbAsyncExecutor : public vm::DynamicBagOfCellsDb::AsyncExecutor {
   explicit CellDbAsyncExecutor(td::actor::ActorId<CellDbBase> cell_db) : cell_db_(std::move(cell_db)) {
   }
 
-  void execute_async(std::function<void()> f) {
+  void execute_async(std::function<void()> f) override {
     class Runner : public td::actor::Actor {
      public:
       explicit Runner(std::function<void()> f) : f_(std::move(f)) {}
-      void start_up() {
+      void start_up() override {
         f_();
         stop();
       }
@@ -47,7 +47,7 @@ class CellDbAsyncExecutor : public vm::DynamicBagOfCellsDb::AsyncExecutor {
     td::actor::create_actor<Runner>("executeasync", std::move(f)).release();
   }
 
-  void execute_sync(std::function<void()> f) {
+  void execute_sync(std::function<void()> f) override {
     td::actor::send_closure(cell_db_, &CellDbBase::execute_sync, std::move(f));
   }
  private:
@@ -83,23 +83,45 @@ void CellDbIn::start_up() {
     set_block(empty, std::move(e));
     cell_db_->commit_write_batch().ensure();
   }
-  last_gc_ = empty;
 }
 
 void CellDbIn::load_cell(RootHash hash, td::Promise<td::Ref<vm::DataCell>> promise) {
-  boc_->load_cell_async(hash.as_slice(), async_executor, std::move(promise));
+  enqueue([this, hash, promise = std::move(promise)](td::Result<td::Unit> R) mutable {
+    if (R.is_error()) {
+      return;
+    }
+    promise.set_result(boc_->load_cell(hash.as_slice()));
+    release_db();
+  });
 }
 
 void CellDbIn::store_cell(BlockIdExt block_id, td::Ref<vm::Cell> cell, td::Promise<td::Ref<vm::DataCell>> promise) {
-  td::PerfWarningTimer timer{"storecell", 0.1};
-  auto key_hash = get_key_hash(block_id);
-  auto R = get_block(key_hash);
-  // duplicate
-  if (R.is_ok()) {
-    promise.set_result(boc_->load_cell(cell->get_hash().as_slice()));
-    return;
-  }
+  enqueue([this, block_id, cell = std::move(cell), promise = std::move(promise)](td::Result<td::Unit> R0) mutable {
+    if (R0.is_error()) {
+      return;
+    }
+    promise = promise.wrap([timer = td::PerfWarningTimer{"storecell", 0.1}](td::Ref<vm::DataCell> &&r) { return r; });
+    auto key_hash = get_key_hash(block_id);
+    auto R = get_block(key_hash);
+    // duplicate
+    if (R.is_ok()) {
+      promise.set_result(boc_->load_cell(cell->get_hash().as_slice()));
+      release_db();
+      return;
+    }
 
+    boc_->inc(cell);
+    boc_->prepare_commit_async(
+        async_executor, [=, SelfId = actor_id(this), promise = std::move(promise)](td::Result<td::Unit> R) mutable {
+          R.ensure();
+          td::actor::send_closure(SelfId, &CellDbIn::store_cell_cont, block_id, cell, std::move(promise));
+        });
+  });
+}
+
+void CellDbIn::store_cell_cont(BlockIdExt block_id, td::Ref<vm::Cell> cell,
+                               td::Promise<td::Ref<vm::DataCell>> promise) {
+  auto key_hash = get_key_hash(block_id);
   auto empty = get_empty_key_hash();
   auto ER = get_block(empty);
   ER.ensure();
@@ -120,9 +142,7 @@ void CellDbIn::store_cell(BlockIdExt block_id, td::Ref<vm::Cell> cell, td::Promi
     P.prev = key_hash;
   }
 
-  boc_->inc(cell);
-  boc_->prepare_commit().ensure();
-  vm::CellStorer stor{*cell_db_.get()};
+  vm::CellStorer stor{*cell_db_};
   cell_db_->begin_write_batch().ensure();
   boc_->commit(stor).ensure();
   set_block(empty, std::move(E));
@@ -134,24 +154,29 @@ void CellDbIn::store_cell(BlockIdExt block_id, td::Ref<vm::Cell> cell, td::Promi
   td::actor::send_closure(parent_, &CellDb::update_snapshot, cell_db_->snapshot());
 
   promise.set_result(boc_->load_cell(cell->get_hash().as_slice()));
+  release_db();
 }
 
 void CellDbIn::get_cell_db_reader(td::Promise<std::shared_ptr<vm::CellDbReader>> promise) {
-  promise.set_result(boc_->get_cell_db_reader());
+  enqueue([this, promise = std::move(promise)](td::Result<td::Unit> R) mutable {
+    if (R.is_error()) {
+      return;
+    }
+    promise.set_result(boc_->get_cell_db_reader());
+    release_db();
+  });
 }
 
 void CellDbIn::alarm() {
-  auto R = get_block(last_gc_);
-  R.ensure();
-
-  auto N = R.move_as_ok();
+  auto E = get_block(get_empty_key_hash()).move_as_ok();
+  auto N = get_block(E.next).move_as_ok();
   if (N.is_empty()) {
-    last_gc_ = N.next;
     alarm_timestamp() = td::Timestamp::in(0.1);
     return;
   }
 
-  auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<bool> R) {
+  auto block_id = N.block_id;
+  auto P = td::PromiseCreator::lambda([SelfId = actor_id(this), block_id](td::Result<bool> R) {
     if (R.is_error()) {
       td::actor::send_closure(SelfId, &CellDbIn::skip_gc);
     } else {
@@ -159,24 +184,19 @@ void CellDbIn::alarm() {
       if (!value) {
         td::actor::send_closure(SelfId, &CellDbIn::skip_gc);
       } else {
-        td::actor::send_closure(SelfId, &CellDbIn::gc);
+        td::actor::send_closure(SelfId, &CellDbIn::gc, block_id);
       }
     }
   });
-  td::actor::send_closure(root_db_, &RootDb::allow_state_gc, N.block_id, std::move(P));
+  td::actor::send_closure(root_db_, &RootDb::allow_state_gc, block_id, std::move(P));
 }
 
-void CellDbIn::gc() {
-  auto R = get_block(last_gc_);
-  R.ensure();
-
-  auto N = R.move_as_ok();
-
+void CellDbIn::gc(BlockIdExt block_id) {
   auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<BlockHandle> R) {
     R.ensure();
     td::actor::send_closure(SelfId, &CellDbIn::gc_cont, R.move_as_ok());
   });
-  td::actor::send_closure(root_db_, &RootDb::get_block_handle_external, N.block_id, false, std::move(P));
+  td::actor::send_closure(root_db_, &RootDb::get_block_handle_external, block_id, false, std::move(P));
 }
 
 void CellDbIn::gc_cont(BlockHandle handle) {
@@ -194,12 +214,30 @@ void CellDbIn::gc_cont(BlockHandle handle) {
 }
 
 void CellDbIn::gc_cont2(BlockHandle handle) {
-  td::PerfWarningTimer timer{"gccell", 0.1};
+  enqueue([this, handle = std::move(handle)](td::Result<td::Unit> R) mutable {
+    if (R.is_error()) {
+      return;
+    }
+    td::Promise<td::Unit> promise = [timer = td::PerfWarningTimer{"gccell", 0.1}](td::Result<td::Unit>) {};
+    auto FR = get_block(get_key_hash(handle->id()));
+    FR.ensure();
+    auto F = FR.move_as_ok();
+    auto cell = boc_->load_cell(F.root_hash.as_slice()).move_as_ok();
 
-  auto FR = get_block(last_gc_);
+    boc_->dec(cell);
+    boc_->prepare_commit_async(async_executor, [SelfId = actor_id(this), promise = std::move(promise),
+                                                block_id = handle->id()](td::Result<td::Unit> R) mutable {
+      R.ensure();
+      td::actor::send_closure(SelfId, &CellDbIn::gc_cont3, block_id, std::move(promise));
+    });
+  });
+}
+
+void CellDbIn::gc_cont3(BlockIdExt block_id, td::Promise<td::Unit> promise) {
+  auto key_hash = get_key_hash(block_id);
+  auto FR = get_block(key_hash);
   FR.ensure();
   auto F = FR.move_as_ok();
-
   auto PR = get_block(F.prev);
   PR.ensure();
   auto P = PR.move_as_ok();
@@ -214,14 +252,10 @@ void CellDbIn::gc_cont2(BlockHandle handle) {
     N.next = N.prev;
   }
 
-  auto cell = boc_->load_cell(F.root_hash.as_slice()).move_as_ok();
-
-  boc_->dec(cell);
-  boc_->prepare_commit().ensure();
-  vm::CellStorer stor{*cell_db_.get()};
+  vm::CellStorer stor{*cell_db_};
   cell_db_->begin_write_batch().ensure();
   boc_->commit(stor).ensure();
-  cell_db_->erase(get_key(last_gc_)).ensure();
+  cell_db_->erase(get_key(key_hash)).ensure();
   set_block(F.prev, std::move(P));
   set_block(F.next, std::move(N));
   cell_db_->commit_write_batch().ensure();
@@ -230,16 +264,33 @@ void CellDbIn::gc_cont2(BlockHandle handle) {
   boc_->set_loader(std::make_unique<vm::CellLoader>(cell_db_->snapshot())).ensure();
   td::actor::send_closure(parent_, &CellDb::update_snapshot, cell_db_->snapshot());
 
-  DCHECK(get_block(last_gc_).is_error());
-  last_gc_ = F.next;
+  DCHECK(get_block(key_hash).is_error());
+  promise.set_result(td::Unit());
+  release_db();
+}
+
+void CellDbIn::enqueue(td::Promise<td::Unit> promise) {
+  db_queue_.push(std::move(promise));
+  process_event();
+}
+
+void CellDbIn::release_db() {
+  db_busy_ = false;
+  process_event();
+}
+
+void CellDbIn::process_event() {
+  if (db_busy_ || db_queue_.empty()) {
+    return;
+  }
+  db_busy_ = true;
+  auto promise = std::move(db_queue_.front());
+  db_queue_.pop();
+  promise.set_result(td::Unit());
 }
 
 void CellDbIn::skip_gc() {
-  auto FR = get_block(last_gc_);
-  FR.ensure();
-  auto F = FR.move_as_ok();
-  last_gc_ = F.next;
-  alarm_timestamp() = td::Timestamp::in(0.01);
+  alarm_timestamp() = td::Timestamp::in(1.0);
 }
 
 std::string CellDbIn::get_key(KeyHash key_hash) {
@@ -296,7 +347,7 @@ void CellDb::load_cell(RootHash hash, td::Promise<td::Ref<vm::DataCell>> promise
           } else {
             promise.set_result(R.move_as_ok());
           }
-    });
+        });
     boc_->load_cell_async(hash.as_slice(), async_executor, std::move(P));
   }
 }
diff --git a/validator/db/celldb.hpp b/validator/db/celldb.hpp
index e54526b9..08d5a184 100644
--- a/validator/db/celldb.hpp
+++ b/validator/db/celldb.hpp
@@ -25,6 +25,7 @@
 #include "ton/ton-types.h"
 #include "interfaces/block-handle.h"
 #include "auto/tl/ton_api.h"
+#include <queue>
 
 namespace ton {
 
@@ -84,11 +85,14 @@ class CellDbIn : public CellDbBase {
   static BlockIdExt get_empty_key();
   KeyHash get_empty_key_hash();
 
-  void gc();
+  void gc(BlockIdExt block_id);
   void gc_cont(BlockHandle handle);
   void gc_cont2(BlockHandle handle);
+  void gc_cont3(BlockIdExt block_id, td::Promise<td::Unit> promise);
   void skip_gc();
 
+  void store_cell_cont(BlockIdExt block_id, td::Ref<vm::Cell> cell, td::Promise<td::Ref<vm::DataCell>> promise);
+
   td::actor::ActorId<RootDb> root_db_;
   td::actor::ActorId<CellDb> parent_;
 
@@ -97,7 +101,12 @@ class CellDbIn : public CellDbBase {
   std::unique_ptr<vm::DynamicBagOfCellsDb> boc_;
   std::shared_ptr<vm::KeyValue> cell_db_;
 
-  KeyHash last_gc_;
+  std::queue<td::Promise<td::Unit>> db_queue_;
+  bool db_busy_ = false;
+
+  void enqueue(td::Promise<td::Unit> promise);
+  void release_db();
+  void process_event();
 };
 
 class CellDb : public CellDbBase {
diff --git a/validator/full-node-shard.cpp b/validator/full-node-shard.cpp
index 4cb5627d..0f495077 100644
--- a/validator/full-node-shard.cpp
+++ b/validator/full-node-shard.cpp
@@ -96,6 +96,7 @@ void FullNodeShardImpl::create_overlay() {
                           std::make_unique<Callback>(actor_id(this)), rules_, PSTRING() << "{ \"type\": \"shard\", \"shard_id\": " << get_shard() << ", \"workchain_id\": " << get_workchain() << " }");
 
   td::actor::send_closure(rldp_, &rldp::Rldp::add_id, adnl_id_);
+  td::actor::send_closure(rldp2_, &rldp2::Rldp::add_id, adnl_id_);
   if (cert_) {
     td::actor::send_closure(overlays_, &overlay::Overlays::update_certificate, adnl_id_, overlay_id_, local_id_, cert_);
   }
@@ -108,15 +109,17 @@ void FullNodeShardImpl::check_broadcast(PublicKeyHash src, td::BufferSlice broad
   }
 
   auto q = B.move_as_ok();
+  if (config_.ext_messages_broadcast_disabled_) {
+    promise.set_error(td::Status::Error("rebroadcasting external messages is disabled"));
+    promise = [manager = validator_manager_, message = q->message_->data_.clone()](td::Result<td::Unit> R) mutable {
+      if (R.is_ok()) {
+        td::actor::send_closure(manager, &ValidatorManagerInterface::new_external_message, std::move(message));
+      }
+    };
+  }
   td::actor::send_closure(validator_manager_, &ValidatorManagerInterface::check_external_message,
                           std::move(q->message_->data_),
-                          [promise = std::move(promise)](td::Result<td::Ref<ExtMessage>> R) mutable {
-                            if (R.is_error()) {
-                              promise.set_error(R.move_as_error());
-                            } else {
-                              promise.set_result(td::Unit());
-                            }
-                          });
+                          promise.wrap([](td::Ref<ExtMessage>) { return td::Unit(); }));
 }
 
 void FullNodeShardImpl::update_adnl_id(adnl::AdnlNodeIdShort adnl_id, td::Promise<td::Unit> promise) {
@@ -685,6 +688,9 @@ void FullNodeShardImpl::send_ihr_message(td::BufferSlice data) {
 }
 
 void FullNodeShardImpl::send_external_message(td::BufferSlice data) {
+  if (config_.ext_messages_broadcast_disabled_) {
+    return;
+  }
   if (!client_.empty()) {
     td::actor::send_closure(client_, &adnl::AdnlExtClient::send_query, "send_ext_query",
                             create_serialize_tl_object_suffix<ton_api::tonNode_query>(
@@ -768,9 +774,11 @@ void FullNodeShardImpl::download_zero_state(BlockIdExt id, td::uint32 priority,
 
 void FullNodeShardImpl::download_persistent_state(BlockIdExt id, BlockIdExt masterchain_block_id, td::uint32 priority,
                                                   td::Timestamp timeout, td::Promise<td::BufferSlice> promise) {
+  auto &b = choose_neighbour();
   td::actor::create_actor<DownloadState>(PSTRING() << "downloadstatereq" << id.id.to_str(), id, masterchain_block_id,
-                                         adnl_id_, overlay_id_, adnl::AdnlNodeIdShort::zero(), priority, timeout,
-                                         validator_manager_, rldp_, overlays_, adnl_, client_, std::move(promise))
+                                         adnl_id_, overlay_id_, b.adnl_id, priority, timeout, validator_manager_,
+                                         b.use_rldp2() ? (td::actor::ActorId<adnl::AdnlSenderInterface>)rldp2_ : rldp_,
+                                         overlays_, adnl_, client_, std::move(promise))
       .release();
 }
 
@@ -805,8 +813,9 @@ void FullNodeShardImpl::download_archive(BlockSeqno masterchain_seqno, std::stri
                                          td::Promise<std::string> promise) {
   auto &b = choose_neighbour();
   td::actor::create_actor<DownloadArchiveSlice>(
-      "archive", masterchain_seqno, std::move(tmp_dir), adnl_id_, overlay_id_, adnl::AdnlNodeIdShort::zero(), timeout,
-      validator_manager_, rldp_, overlays_, adnl_, client_, create_neighbour_promise(b, std::move(promise)))
+      "archive", masterchain_seqno, std::move(tmp_dir), adnl_id_, overlay_id_, b.adnl_id, timeout, validator_manager_,
+      b.use_rldp2() ? (td::actor::ActorId<adnl::AdnlSenderInterface>)rldp2_ : rldp_, overlays_, adnl_, client_,
+      create_neighbour_promise(b, std::move(promise)))
       .release();
 }
 
@@ -1100,8 +1109,9 @@ void FullNodeShardImpl::ping_neighbours() {
 }
 
 FullNodeShardImpl::FullNodeShardImpl(ShardIdFull shard, PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id,
-                                     FileHash zero_state_file_hash, td::actor::ActorId<keyring::Keyring> keyring,
-                                     td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<rldp::Rldp> rldp,
+                                     FileHash zero_state_file_hash, FullNodeConfig config,
+                                     td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
+                                     td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<rldp2::Rldp> rldp2,
                                      td::actor::ActorId<overlay::Overlays> overlays,
                                      td::actor::ActorId<ValidatorManagerInterface> validator_manager,
                                      td::actor::ActorId<adnl::AdnlExtClient> client)
@@ -1112,18 +1122,21 @@ FullNodeShardImpl::FullNodeShardImpl(ShardIdFull shard, PublicKeyHash local_id,
     , keyring_(keyring)
     , adnl_(adnl)
     , rldp_(rldp)
+    , rldp2_(rldp2)
     , overlays_(overlays)
     , validator_manager_(validator_manager)
-    , client_(client) {
+    , client_(client)
+    , config_(config) {
 }
 
 td::actor::ActorOwn<FullNodeShard> FullNodeShard::create(
     ShardIdFull shard, PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id, FileHash zero_state_file_hash,
-    td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
-    td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<overlay::Overlays> overlays,
-    td::actor::ActorId<ValidatorManagerInterface> validator_manager, td::actor::ActorId<adnl::AdnlExtClient> client) {
-  return td::actor::create_actor<FullNodeShardImpl>("tonnode", shard, local_id, adnl_id, zero_state_file_hash, keyring,
-                                                    adnl, rldp, overlays, validator_manager, client);
+    FullNodeConfig config, td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
+    td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<rldp2::Rldp> rldp2,
+    td::actor::ActorId<overlay::Overlays> overlays, td::actor::ActorId<ValidatorManagerInterface> validator_manager,
+    td::actor::ActorId<adnl::AdnlExtClient> client) {
+  return td::actor::create_actor<FullNodeShardImpl>("tonnode", shard, local_id, adnl_id, zero_state_file_hash, config,
+                                                    keyring, adnl, rldp, rldp2, overlays, validator_manager, client);
 }
 
 }  // namespace fullnode
diff --git a/validator/full-node-shard.h b/validator/full-node-shard.h
index c1712baf..1b742fb9 100644
--- a/validator/full-node-shard.h
+++ b/validator/full-node-shard.h
@@ -36,6 +36,7 @@ class FullNodeShard : public td::actor::Actor {
   virtual ShardIdFull get_shard_full() const = 0;
 
   virtual void update_adnl_id(adnl::AdnlNodeIdShort adnl_id, td::Promise<td::Unit> promise) = 0;
+  virtual void set_config(FullNodeConfig config) = 0;
 
   virtual void send_ihr_message(td::BufferSlice data) = 0;
   virtual void send_external_message(td::BufferSlice data) = 0;
@@ -68,9 +69,10 @@ class FullNodeShard : public td::actor::Actor {
 
   static td::actor::ActorOwn<FullNodeShard> create(
       ShardIdFull shard, PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id, FileHash zero_state_file_hash,
-      td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
-      td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<overlay::Overlays> overlays,
-      td::actor::ActorId<ValidatorManagerInterface> validator_manager, td::actor::ActorId<adnl::AdnlExtClient> client);
+      FullNodeConfig config, td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
+      td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<rldp2::Rldp> rldp2,
+      td::actor::ActorId<overlay::Overlays> overlays, td::actor::ActorId<ValidatorManagerInterface> validator_manager,
+      td::actor::ActorId<adnl::AdnlExtClient> client);
 };
 
 }  // namespace fullnode
diff --git a/validator/full-node-shard.hpp b/validator/full-node-shard.hpp
index a2dd5cc4..dcf4c649 100644
--- a/validator/full-node-shard.hpp
+++ b/validator/full-node-shard.hpp
@@ -44,6 +44,10 @@ struct Neighbour {
   void query_failed();
   void update_roundtrip(double t);
 
+  bool use_rldp2() const {
+    return std::make_pair(proto_version, capabilities) >= std::make_pair<td::uint32, td::uint64>(2, 2);
+  }
+
   static Neighbour zero;
 };
 
@@ -66,7 +70,7 @@ class FullNodeShardImpl : public FullNodeShard {
     return 2;
   }
   static constexpr td::uint64 proto_capabilities() {
-    return 1;
+    return 2;
   }
   static constexpr td::uint32 max_neighbours() {
     return 16;
@@ -81,6 +85,10 @@ class FullNodeShardImpl : public FullNodeShard {
   void create_overlay();
   void update_adnl_id(adnl::AdnlNodeIdShort adnl_id, td::Promise<td::Unit> promise) override;
 
+  void set_config(FullNodeConfig config) override {
+    config_ = config;
+  }
+
   //td::Result<Block> fetch_block(td::BufferSlice data);
   void prevalidate_block(BlockIdExt block_id, td::BufferSlice data, td::BufferSlice proof,
                          td::Promise<ReceivedBlock> promise);
@@ -198,9 +206,9 @@ class FullNodeShardImpl : public FullNodeShard {
   }
 
   FullNodeShardImpl(ShardIdFull shard, PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id,
-                    FileHash zero_state_file_hash, td::actor::ActorId<keyring::Keyring> keyring,
+                    FileHash zero_state_file_hash, FullNodeConfig config, td::actor::ActorId<keyring::Keyring> keyring,
                     td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<rldp::Rldp> rldp,
-                    td::actor::ActorId<overlay::Overlays> overlays,
+                    td::actor::ActorId<rldp2::Rldp> rldp2, td::actor::ActorId<overlay::Overlays> overlays,
                     td::actor::ActorId<ValidatorManagerInterface> validator_manager,
                     td::actor::ActorId<adnl::AdnlExtClient> client);
 
@@ -220,6 +228,7 @@ class FullNodeShardImpl : public FullNodeShard {
   td::actor::ActorId<keyring::Keyring> keyring_;
   td::actor::ActorId<adnl::Adnl> adnl_;
   td::actor::ActorId<rldp::Rldp> rldp_;
+  td::actor::ActorId<rldp2::Rldp> rldp2_;
   td::actor::ActorId<overlay::Overlays> overlays_;
   td::actor::ActorId<ValidatorManagerInterface> validator_manager_;
   td::actor::ActorId<adnl::AdnlExtClient> client_;
@@ -239,6 +248,8 @@ class FullNodeShardImpl : public FullNodeShard {
   td::Timestamp reload_neighbours_at_;
   td::Timestamp ping_neighbours_at_;
   adnl::AdnlNodeIdShort last_pinged_neighbour_ = adnl::AdnlNodeIdShort::zero();
+
+  FullNodeConfig config_;
 };
 
 }  // namespace fullnode
diff --git a/validator/full-node.cpp b/validator/full-node.cpp
index 6606f215..ebba50a0 100644
--- a/validator/full-node.cpp
+++ b/validator/full-node.cpp
@@ -20,6 +20,7 @@
 #include "ton/ton-shard.h"
 #include "ton/ton-io.hpp"
 #include "td/actor/MultiPromise.h"
+#include "full-node.h"
 
 namespace ton {
 
@@ -110,6 +111,13 @@ void FullNodeImpl::update_adnl_id(adnl::AdnlNodeIdShort adnl_id, td::Promise<td:
   local_id_ = adnl_id_.pubkey_hash();
 }
 
+void FullNodeImpl::set_config(FullNodeConfig config) {
+  config_ = config;
+  for (auto& shard : shards_) {
+    td::actor::send_closure(shard.second, &FullNodeShard::set_config, config);
+  }
+}
+
 void FullNodeImpl::initial_read_complete(BlockHandle top_handle) {
   auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::Unit> R) {
     R.ensure();
@@ -123,8 +131,8 @@ void FullNodeImpl::initial_read_complete(BlockHandle top_handle) {
 void FullNodeImpl::add_shard(ShardIdFull shard) {
   while (true) {
     if (shards_.count(shard) == 0) {
-      shards_.emplace(shard, FullNodeShard::create(shard, local_id_, adnl_id_, zero_state_file_hash_, keyring_, adnl_,
-                                                   rldp_, overlays_, validator_manager_, client_));
+      shards_.emplace(shard, FullNodeShard::create(shard, local_id_, adnl_id_, zero_state_file_hash_, config_, keyring_,
+                                                   adnl_, rldp_, rldp2_, overlays_, validator_manager_, client_));
       if (all_validators_.size() > 0) {
         td::actor::send_closure(shards_[shard], &FullNodeShard::update_validators, all_validators_, sign_cert_by_);
       }
@@ -449,8 +457,9 @@ void FullNodeImpl::start_up() {
 }
 
 FullNodeImpl::FullNodeImpl(PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id, FileHash zero_state_file_hash,
-                           td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
-                           td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<dht::Dht> dht,
+                           FullNodeConfig config, td::actor::ActorId<keyring::Keyring> keyring,
+                           td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<rldp::Rldp> rldp,
+                           td::actor::ActorId<rldp2::Rldp> rldp2, td::actor::ActorId<dht::Dht> dht,
                            td::actor::ActorId<overlay::Overlays> overlays,
                            td::actor::ActorId<ValidatorManagerInterface> validator_manager,
                            td::actor::ActorId<adnl::AdnlExtClient> client, std::string db_root)
@@ -460,24 +469,40 @@ FullNodeImpl::FullNodeImpl(PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id
     , keyring_(keyring)
     , adnl_(adnl)
     , rldp_(rldp)
+    , rldp2_(rldp2)
     , dht_(dht)
     , overlays_(overlays)
     , validator_manager_(validator_manager)
     , client_(client)
-    , db_root_(db_root) {
+    , db_root_(db_root)
+    , config_(config) {
   add_shard(ShardIdFull{masterchainId});
 }
 
 td::actor::ActorOwn<FullNode> FullNode::create(ton::PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id,
-                                               FileHash zero_state_file_hash,
+                                               FileHash zero_state_file_hash, FullNodeConfig config,
                                                td::actor::ActorId<keyring::Keyring> keyring,
                                                td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<rldp::Rldp> rldp,
-                                               td::actor::ActorId<dht::Dht> dht,
+                                               td::actor::ActorId<rldp2::Rldp> rldp2, td::actor::ActorId<dht::Dht> dht,
                                                td::actor::ActorId<overlay::Overlays> overlays,
                                                td::actor::ActorId<ValidatorManagerInterface> validator_manager,
                                                td::actor::ActorId<adnl::AdnlExtClient> client, std::string db_root) {
-  return td::actor::create_actor<FullNodeImpl>("fullnode", local_id, adnl_id, zero_state_file_hash, keyring, adnl, rldp,
-                                               dht, overlays, validator_manager, client, db_root);
+  return td::actor::create_actor<FullNodeImpl>("fullnode", local_id, adnl_id, zero_state_file_hash, config, keyring,
+                                               adnl, rldp, rldp2, dht, overlays, validator_manager, client, db_root);
+}
+
+FullNodeConfig::FullNodeConfig(const tl_object_ptr<ton_api::engine_validator_fullNodeConfig> &obj)
+    : ext_messages_broadcast_disabled_(obj->ext_messages_broadcast_disabled_) {
+}
+
+tl_object_ptr<ton_api::engine_validator_fullNodeConfig> FullNodeConfig::tl() const {
+  return create_tl_object<ton_api::engine_validator_fullNodeConfig>(ext_messages_broadcast_disabled_);
+}
+bool FullNodeConfig::operator==(const FullNodeConfig &rhs) const {
+  return ext_messages_broadcast_disabled_ == rhs.ext_messages_broadcast_disabled_;
+}
+bool FullNodeConfig::operator!=(const FullNodeConfig &rhs) const {
+  return !(*this == rhs);
 }
 
 }  // namespace fullnode
diff --git a/validator/full-node.h b/validator/full-node.h
index cdf39d6f..15d54b55 100644
--- a/validator/full-node.h
+++ b/validator/full-node.h
@@ -27,6 +27,7 @@
 
 #include "adnl/adnl.h"
 #include "rldp/rldp.h"
+#include "rldp2/rldp.h"
 #include "dht/dht.h"
 #include "overlay/overlays.h"
 #include "validator/validator.h"
@@ -44,6 +45,16 @@ constexpr int VERBOSITY_NAME(FULL_NODE_INFO) = verbosity_DEBUG;
 constexpr int VERBOSITY_NAME(FULL_NODE_DEBUG) = verbosity_DEBUG;
 constexpr int VERBOSITY_NAME(FULL_NODE_EXTRA_DEBUG) = verbosity_DEBUG + 1;
 
+struct FullNodeConfig {
+  FullNodeConfig() = default;
+  FullNodeConfig(const tl_object_ptr<ton_api::engine_validator_fullNodeConfig>& obj);
+  tl_object_ptr<ton_api::engine_validator_fullNodeConfig> tl() const;
+  bool operator==(const FullNodeConfig& rhs) const;
+  bool operator!=(const FullNodeConfig& rhs) const;
+
+  bool ext_messages_broadcast_disabled_ = false;
+};
+
 class FullNode : public td::actor::Actor {
  public:
   virtual ~FullNode() = default;
@@ -61,6 +72,7 @@ class FullNode : public td::actor::Actor {
                                                 td::Promise<td::Unit> promise) = 0;
 
   virtual void update_adnl_id(adnl::AdnlNodeIdShort adnl_id, td::Promise<td::Unit> promise) = 0;
+  virtual void set_config(FullNodeConfig config) = 0;
 
   static constexpr td::uint32 max_block_size() {
     return 4 << 20;
@@ -73,10 +85,10 @@ class FullNode : public td::actor::Actor {
   }
 
   static td::actor::ActorOwn<FullNode> create(ton::PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id,
-                                              FileHash zero_state_file_hash,
+                                              FileHash zero_state_file_hash, FullNodeConfig config,
                                               td::actor::ActorId<keyring::Keyring> keyring,
                                               td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<rldp::Rldp> rldp,
-                                              td::actor::ActorId<dht::Dht> dht,
+                                              td::actor::ActorId<rldp2::Rldp> rldp2, td::actor::ActorId<dht::Dht> dht,
                                               td::actor::ActorId<overlay::Overlays> overlays,
                                               td::actor::ActorId<ValidatorManagerInterface> validator_manager,
                                               td::actor::ActorId<adnl::AdnlExtClient> client, std::string db_root);
diff --git a/validator/full-node.hpp b/validator/full-node.hpp
index 6d57f4a8..fc2dd75c 100644
--- a/validator/full-node.hpp
+++ b/validator/full-node.hpp
@@ -49,8 +49,8 @@ class FullNodeImpl : public FullNode {
                                         std::shared_ptr<ton::overlay::Certificate> cert,
                                         td::Promise<td::Unit> promise) override;
 
-
   void update_adnl_id(adnl::AdnlNodeIdShort adnl_id, td::Promise<td::Unit> promise) override;
+  void set_config(FullNodeConfig config) override;
 
   void add_shard(ShardIdFull shard);
   void del_shard(ShardIdFull shard);
@@ -82,9 +82,9 @@ class FullNodeImpl : public FullNode {
   void start_up() override;
 
   FullNodeImpl(PublicKeyHash local_id, adnl::AdnlNodeIdShort adnl_id, FileHash zero_state_file_hash,
-               td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
-               td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<dht::Dht> dht,
-               td::actor::ActorId<overlay::Overlays> overlays,
+               FullNodeConfig config, td::actor::ActorId<keyring::Keyring> keyring, td::actor::ActorId<adnl::Adnl> adnl,
+               td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<rldp2::Rldp> rldp2,
+               td::actor::ActorId<dht::Dht> dht, td::actor::ActorId<overlay::Overlays> overlays,
                td::actor::ActorId<ValidatorManagerInterface> validator_manager,
                td::actor::ActorId<adnl::AdnlExtClient> client, std::string db_root);
 
@@ -101,6 +101,7 @@ class FullNodeImpl : public FullNode {
   td::actor::ActorId<keyring::Keyring> keyring_;
   td::actor::ActorId<adnl::Adnl> adnl_;
   td::actor::ActorId<rldp::Rldp> rldp_;
+  td::actor::ActorId<rldp2::Rldp> rldp2_;
   td::actor::ActorId<dht::Dht> dht_;
   td::actor::ActorId<overlay::Overlays> overlays_;
   td::actor::ActorId<ValidatorManagerInterface> validator_manager_;
@@ -112,6 +113,7 @@ class FullNodeImpl : public FullNode {
   std::vector<PublicKeyHash> all_validators_;
 
   std::set<PublicKeyHash> local_keys_;
+  FullNodeConfig config_;
 };
 
 }  // namespace fullnode
diff --git a/validator/net/download-archive-slice.cpp b/validator/net/download-archive-slice.cpp
index e3acb4ba..6235b8b0 100644
--- a/validator/net/download-archive-slice.cpp
+++ b/validator/net/download-archive-slice.cpp
@@ -29,7 +29,7 @@ namespace fullnode {
 DownloadArchiveSlice::DownloadArchiveSlice(
     BlockSeqno masterchain_seqno, std::string tmp_dir, adnl::AdnlNodeIdShort local_id,
     overlay::OverlayIdShort overlay_id, adnl::AdnlNodeIdShort download_from, td::Timestamp timeout,
-    td::actor::ActorId<ValidatorManagerInterface> validator_manager, td::actor::ActorId<rldp::Rldp> rldp,
+    td::actor::ActorId<ValidatorManagerInterface> validator_manager, td::actor::ActorId<adnl::AdnlSenderInterface> rldp,
     td::actor::ActorId<overlay::Overlays> overlays, td::actor::ActorId<adnl::Adnl> adnl,
     td::actor::ActorId<adnl::AdnlExtClient> client, td::Promise<std::string> promise)
     : masterchain_seqno_(masterchain_seqno)
@@ -144,6 +144,8 @@ void DownloadArchiveSlice::got_archive_info(td::BufferSlice data) {
     return;
   }
 
+  prev_logged_timer_ = td::Timer();
+  LOG(INFO) << "downloading archive slice #" << masterchain_seqno_ << " from " << download_from_;
   get_archive_slice();
 }
 
@@ -159,12 +161,12 @@ void DownloadArchiveSlice::get_archive_slice() {
   auto q = create_serialize_tl_object<ton_api::tonNode_getArchiveSlice>(archive_id_, offset_, slice_size());
   if (client_.empty()) {
     td::actor::send_closure(overlays_, &overlay::Overlays::send_query_via, download_from_, local_id_, overlay_id_,
-                            "get_archive_slice", std::move(P), td::Timestamp::in(3.0), std::move(q),
+                            "get_archive_slice", std::move(P), td::Timestamp::in(15.0), std::move(q),
                             slice_size() + 1024, rldp_);
   } else {
     td::actor::send_closure(client_, &adnl::AdnlExtClient::send_query, "get_archive_slice",
                             create_serialize_tl_object_suffix<ton_api::tonNode_query>(std::move(q)),
-                            td::Timestamp::in(1.0), std::move(P));
+                            td::Timestamp::in(15.0), std::move(P));
   }
 }
 
@@ -181,7 +183,16 @@ void DownloadArchiveSlice::got_archive_slice(td::BufferSlice data) {
 
   offset_ += data.size();
 
+  double elapsed = prev_logged_timer_.elapsed();
+  if (elapsed > 10.0) {
+    prev_logged_timer_ = td::Timer();
+    LOG(INFO) << "downloading archive slice #" << masterchain_seqno_ << ": total=" << offset_ << " ("
+              << td::format::as_size((td::uint64)(double(offset_ - prev_logged_sum_) / elapsed)) << "/s)";
+    prev_logged_sum_ = offset_;
+  }
+
   if (data.size() < slice_size()) {
+    LOG(INFO) << "finished downloading arcrive slice #" << masterchain_seqno_ << ": total=" << offset_;
     finish_query();
   } else {
     get_archive_slice();
diff --git a/validator/net/download-archive-slice.hpp b/validator/net/download-archive-slice.hpp
index 6ef11d1a..0384ac8c 100644
--- a/validator/net/download-archive-slice.hpp
+++ b/validator/net/download-archive-slice.hpp
@@ -21,7 +21,6 @@
 #include "overlay/overlays.h"
 #include "ton/ton-types.h"
 #include "validator/validator.h"
-#include "rldp/rldp.h"
 #include "adnl/adnl-ext-client.h"
 #include "td/utils/port/FileFd.h"
 
@@ -36,9 +35,9 @@ class DownloadArchiveSlice : public td::actor::Actor {
   DownloadArchiveSlice(BlockSeqno masterchain_seqno, std::string tmp_dir, adnl::AdnlNodeIdShort local_id,
                        overlay::OverlayIdShort overlay_id, adnl::AdnlNodeIdShort download_from, td::Timestamp timeout,
                        td::actor::ActorId<ValidatorManagerInterface> validator_manager,
-                       td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<overlay::Overlays> overlays,
-                       td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<adnl::AdnlExtClient> client,
-                       td::Promise<std::string> promise);
+                       td::actor::ActorId<adnl::AdnlSenderInterface> rldp,
+                       td::actor::ActorId<overlay::Overlays> overlays, td::actor::ActorId<adnl::Adnl> adnl,
+                       td::actor::ActorId<adnl::AdnlExtClient> client, td::Promise<std::string> promise);
 
   void abort_query(td::Status reason);
   void alarm() override;
@@ -51,7 +50,7 @@ class DownloadArchiveSlice : public td::actor::Actor {
   void got_archive_slice(td::BufferSlice data);
 
   static constexpr td::uint32 slice_size() {
-    return 1 << 17;
+    return 1 << 21;
   }
 
  private:
@@ -68,11 +67,14 @@ class DownloadArchiveSlice : public td::actor::Actor {
 
   td::Timestamp timeout_;
   td::actor::ActorId<ValidatorManagerInterface> validator_manager_;
-  td::actor::ActorId<rldp::Rldp> rldp_;
+  td::actor::ActorId<adnl::AdnlSenderInterface> rldp_;
   td::actor::ActorId<overlay::Overlays> overlays_;
   td::actor::ActorId<adnl::Adnl> adnl_;
   td::actor::ActorId<adnl::AdnlExtClient> client_;
   td::Promise<std::string> promise_;
+
+  td::uint64 prev_logged_sum_ = 0;
+  td::Timer prev_logged_timer_;
 };
 
 }  // namespace fullnode
diff --git a/validator/net/download-block-new.cpp b/validator/net/download-block-new.cpp
index ef5ed7e5..14754f64 100644
--- a/validator/net/download-block-new.cpp
+++ b/validator/net/download-block-new.cpp
@@ -201,12 +201,12 @@ void DownloadBlockNew::got_node_to_download(adnl::AdnlNodeIdShort node) {
   }
   if (client_.empty()) {
     td::actor::send_closure(overlays_, &overlay::Overlays::send_query_via, download_from_, local_id_, overlay_id_,
-                            "get_proof", std::move(P), td::Timestamp::in(3.0), std::move(q),
+                            "get_proof", std::move(P), td::Timestamp::in(15.0), std::move(q),
                             FullNode::max_proof_size() + FullNode::max_block_size() + 128, rldp_);
   } else {
     td::actor::send_closure(client_, &adnl::AdnlExtClient::send_query, "get_prepare",
                             create_serialize_tl_object_suffix<ton_api::tonNode_query>(std::move(q)),
-                            td::Timestamp::in(1.0), std::move(P));
+                            td::Timestamp::in(15.0), std::move(P));
   }
 }
 
diff --git a/validator/net/download-block.cpp b/validator/net/download-block.cpp
index 5e7c0be9..9ca84be2 100644
--- a/validator/net/download-block.cpp
+++ b/validator/net/download-block.cpp
@@ -373,12 +373,12 @@ void DownloadBlock::got_block_data_description(td::BufferSlice data_description)
             auto q = create_serialize_tl_object<ton_api::tonNode_downloadBlock>(create_tl_block_id(block_id_));
             if (client_.empty()) {
               td::actor::send_closure(overlays_, &overlay::Overlays::send_query_via, download_from_, local_id_,
-                                      overlay_id_, "get_block", std::move(P), td::Timestamp::in(3.0), std::move(q),
+                                      overlay_id_, "get_block", std::move(P), td::Timestamp::in(15.0), std::move(q),
                                       FullNode::max_block_size(), rldp_);
             } else {
               td::actor::send_closure(client_, &adnl::AdnlExtClient::send_query, "get_block",
                                       create_serialize_tl_object_suffix<ton_api::tonNode_query>(std::move(q)),
-                                      td::Timestamp::in(3.0), std::move(P));
+                                      td::Timestamp::in(15.0), std::move(P));
             }
           },
           [&](ton_api::tonNode_notFound &val) {
diff --git a/validator/net/download-state.cpp b/validator/net/download-state.cpp
index fedfaae8..2740ce41 100644
--- a/validator/net/download-state.cpp
+++ b/validator/net/download-state.cpp
@@ -32,9 +32,9 @@ DownloadState::DownloadState(BlockIdExt block_id, BlockIdExt masterchain_block_i
                              overlay::OverlayIdShort overlay_id, adnl::AdnlNodeIdShort download_from,
                              td::uint32 priority, td::Timestamp timeout,
                              td::actor::ActorId<ValidatorManagerInterface> validator_manager,
-                             td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<overlay::Overlays> overlays,
-                             td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<adnl::AdnlExtClient> client,
-                             td::Promise<td::BufferSlice> promise)
+                             td::actor::ActorId<adnl::AdnlSenderInterface> rldp,
+                             td::actor::ActorId<overlay::Overlays> overlays, td::actor::ActorId<adnl::Adnl> adnl,
+                             td::actor::ActorId<adnl::AdnlExtClient> client, td::Promise<td::BufferSlice> promise)
     : block_id_(block_id)
     , masterchain_block_id_(masterchain_block_id)
     , local_id_(local_id)
@@ -115,7 +115,7 @@ void DownloadState::got_block_handle(BlockHandle handle) {
 
 void DownloadState::got_node_to_download(adnl::AdnlNodeIdShort node) {
   download_from_ = node;
-  LOG(INFO) << "downloading state " << block_id_ << " from " << download_from_;
+  LOG(INFO) << "downloading state " << block_id_.to_str() << " from " << download_from_;
 
   auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::BufferSlice> R) mutable {
     if (R.is_error()) {
@@ -192,8 +192,8 @@ void DownloadState::got_block_state_part(td::BufferSlice data, td::uint32 reques
   double elapsed = prev_logged_timer_.elapsed();
   if (elapsed > 10.0) {
     prev_logged_timer_ = td::Timer();
-    LOG(INFO) << "downloading state " << block_id_ << ": total=" << sum_ <<
-        " (" << double(sum_ - prev_logged_sum_) / elapsed << " B/s)";
+    LOG(INFO) << "downloading state " << block_id_.to_str() << ": total=" << sum_ << " ("
+              << td::format::as_size((td::uint64)(double(sum_ - prev_logged_sum_) / elapsed)) << "/s)";
     prev_logged_sum_ = sum_;
   }
 
@@ -210,7 +210,7 @@ void DownloadState::got_block_state_part(td::BufferSlice data, td::uint32 reques
     return;
   }
 
-  td::uint32 part_size = 1 << 18;
+  td::uint32 part_size = 1 << 21;
   auto P = td::PromiseCreator::lambda([SelfId = actor_id(this), part_size](td::Result<td::BufferSlice> R) {
     if (R.is_error()) {
       td::actor::send_closure(SelfId, &DownloadState::abort_query, R.move_as_error());
@@ -223,18 +223,18 @@ void DownloadState::got_block_state_part(td::BufferSlice data, td::uint32 reques
       create_tl_block_id(block_id_), create_tl_block_id(masterchain_block_id_), sum_, part_size);
   if (client_.empty()) {
     td::actor::send_closure(overlays_, &overlay::Overlays::send_query_via, download_from_, local_id_, overlay_id_,
-                            "download state", std::move(P), td::Timestamp::in(10.0), std::move(query),
+                            "download state", std::move(P), td::Timestamp::in(20.0), std::move(query),
                             FullNode::max_state_size(), rldp_);
   } else {
     td::actor::send_closure(client_, &adnl::AdnlExtClient::send_query, "download state",
                             create_serialize_tl_object_suffix<ton_api::tonNode_query>(std::move(query)),
-                            td::Timestamp::in(10.0), std::move(P));
+                            td::Timestamp::in(20.0), std::move(P));
   }
 }
 
 void DownloadState::got_block_state(td::BufferSlice data) {
   state_ = std::move(data);
-  LOG(INFO) << "finished downloading state " << block_id_ << ": total=" << sum_;
+  LOG(INFO) << "finished downloading state " << block_id_.to_str() << ": total=" << sum_;
   finish_query();
 }
 
diff --git a/validator/net/download-state.hpp b/validator/net/download-state.hpp
index a586f61f..7db1327f 100644
--- a/validator/net/download-state.hpp
+++ b/validator/net/download-state.hpp
@@ -21,7 +21,6 @@
 #include "overlay/overlays.h"
 #include "ton/ton-types.h"
 #include "validator/validator.h"
-#include "rldp/rldp.h"
 #include "adnl/adnl-ext-client.h"
 
 namespace ton {
@@ -35,7 +34,7 @@ class DownloadState : public td::actor::Actor {
   DownloadState(BlockIdExt block_id, BlockIdExt masterchain_block_id, adnl::AdnlNodeIdShort local_id,
                 overlay::OverlayIdShort overlay_id, adnl::AdnlNodeIdShort download_from, td::uint32 priority,
                 td::Timestamp timeout, td::actor::ActorId<ValidatorManagerInterface> validator_manager,
-                td::actor::ActorId<rldp::Rldp> rldp, td::actor::ActorId<overlay::Overlays> overlays,
+                td::actor::ActorId<adnl::AdnlSenderInterface> rldp, td::actor::ActorId<overlay::Overlays> overlays,
                 td::actor::ActorId<adnl::Adnl> adnl, td::actor::ActorId<adnl::AdnlExtClient> client,
                 td::Promise<td::BufferSlice> promise);
 
@@ -62,7 +61,7 @@ class DownloadState : public td::actor::Actor {
 
   td::Timestamp timeout_;
   td::actor::ActorId<ValidatorManagerInterface> validator_manager_;
-  td::actor::ActorId<rldp::Rldp> rldp_;
+  td::actor::ActorId<adnl::AdnlSenderInterface> rldp_;
   td::actor::ActorId<overlay::Overlays> overlays_;
   td::actor::ActorId<adnl::Adnl> adnl_;
   td::actor::ActorId<adnl::AdnlExtClient> client_;
diff --git a/validator/state-serializer.cpp b/validator/state-serializer.cpp
index 1bb932c6..4ac4fc70 100644
--- a/validator/state-serializer.cpp
+++ b/validator/state-serializer.cpp
@@ -148,7 +148,7 @@ void AsyncStateSerializer::next_iteration() {
           running_ = true;
           delay_action(
             [SelfId = actor_id(this), shard = shards_[next_idx_]]() { td::actor::send_closure(SelfId, &AsyncStateSerializer::request_shard_state, shard); },
-            td::Timestamp::in(td::Random::fast(0, 4 * 3600)));
+            td::Timestamp::in(td::Random::fast(0, 1800)));
         return;
       }
     }