diff --git a/src/routing_layer/route_ping.c b/src/routing_layer/route_ping.c
index 2b20f83b..dad1e81c 100644
--- a/src/routing_layer/route_ping.c
+++ b/src/routing_layer/route_ping.c
@@ -80,6 +80,7 @@ void route_ping_handle_resp(struct NAT_DETECTION* nd, struct ETCP_CONN* from_con
     DEBUG_INFO(DEBUG_CATEGORY_BGP, "from=%s request_id=%08x sent=%u ok=%u avg_rtt=%u",
                from_conn->log_name, (unsigned)resp->request_id,
                (unsigned)resp->count_sent, (unsigned)resp->count_ok, (unsigned)resp->avg_rtt);
+    topo_node_ping_update_rtt(nd->inst->topo_groups, from_conn->peer_node_id, resp->avg_rtt);
 
     struct route_ping_pending** cur = &nd->ping_pending;
     while (*cur) {
diff --git a/src/transport_layer/etcp.c b/src/transport_layer/etcp.c
index b7bcdadd..c55059bb 100644
--- a/src/transport_layer/etcp.c
+++ b/src/transport_layer/etcp.c
@@ -441,6 +441,7 @@ void etcp_conn_reset(struct ETCP_CONN* etcp) {
     etcp->rtt_avg_10 = 0;
     etcp->rtt_avg_100 = 0;
     etcp->jitter = 0;
+    etcp->last_rtt_cb_time = 0;
     etcp->bytes_sent_total = 0;
     etcp->retransmissions_count = 0;
     etcp->ack_packets_count = 0;
@@ -1545,6 +1546,13 @@ void etcp_conn_input(struct ETCP_DGRAM* pkt) {
                 etcp->rtt_avg_10=rtt_max;
                 etcp->tt_last=tt_sum/cnt;
                 etcp->jitter=j_sum/cnt;
+                if (etcp->rtt_last) {
+                    uint64_t now_tb = get_time_tb();
+                    if (now_tb - etcp->last_rtt_cb_time > RTT_CB_PERIOD_TB) {
+                        topo_node_ping_update_rtt(etcp->instance->topo_groups, etcp->peer_node_id, etcp->rtt_last);
+                        etcp->last_rtt_cb_time = now_tb;
+                    }
+                }
                 break;
             }
             case ETCP_SECTION_PAYLOAD: {
diff --git a/src/transport_layer/etcp.h b/src/transport_layer/etcp.h
index 6e9faae0..cda281c1 100644
--- a/src/transport_layer/etcp.h
+++ b/src/transport_layer/etcp.h
@@ -199,6 +199,7 @@ struct ETCP_CONN {
     uint16_t rtt_avg_10;
     uint16_t rtt_avg_100;
     uint16_t jitter;
+    uint64_t last_rtt_cb_time;  // время последнего вызова ping_update_rtt (0.1ms)
     uint32_t bytes_sent_total;
     // uint32_t bytes_received_total;  // Not used
     uint32_t retransmissions_count;
@@ -258,6 +259,8 @@ struct ETCP_CONN {
     char* name;                  // Connection name from config (e.g., "client_test1"), or NULL/empty
 };
 
+#define RTT_CB_PERIOD_TB 600000  // 1 минута в 0.1ms
+
 // Functions
 struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* instance, char* name);
 void etcp_connection_close(struct ETCP_CONN* etcp);