diff --git a/frontend/src/NetworkMapDashboard.jsx b/frontend/src/NetworkMapDashboard.jsx
index d52a3bf..6d4974a 100644
--- a/frontend/src/NetworkMapDashboard.jsx
+++ b/frontend/src/NetworkMapDashboard.jsx
@@ -29,6 +29,8 @@ export default function NetworkMapDashboard() {
   const [servers, setServers] = useState([]);
   const [connections, setConnections] = useState([]);
   const [pingMap, setPingMap] = useState({});
+  const pingTimestampsRef = useRef({});
+  const [pingCacheSeconds, setPingCacheSeconds] = useState(0);
   const [loading, setLoading] = useState(true);
   const [pingLoading, setPingLoading] = useState(false);
   const [error, setError] = useState(null);
@@ -39,13 +41,20 @@ export default function NetworkMapDashboard() {
     setLoading(true);
     setError(null);
     try {
-      const [serversRes, configRes] = await Promise.all([
+      const [serversRes, configRes, uiSettingsRes] = await Promise.all([
         api.get('/servers'),
         api.get('/network-config').catch(() => ({ data: null })),
+        api.get('/ui-settings').catch(() => ({ data: {} })),
       ]);
       const serversList = Array.isArray(serversRes?.data) ? serversRes.data : [];
       const config = configRes?.data || {};
       const tunnelInterfaces = Array.isArray(config.tunnelInterfaces) ? config.tunnelInterfaces : [];
+      const uiSettings = uiSettingsRes?.data || {};
+      const ttlSeconds = Math.max(
+        0,
+        parseInt(uiSettings.networkMapPingCacheSeconds, 10) || 0
+      );
+      setPingCacheSeconds(ttlSeconds);
 
       const getServer = (serverId) =>
         serversList.find((s) => s.id === serverId || s.ip === serverId || s.dns === serverId);
@@ -88,7 +97,7 @@ export default function NetworkMapDashboard() {
     pingAbortRef.current = false;
     setPingLoading(true);
     const key = (a, b) => `${a}:${b}`;
-    const newMap = {};
+    const ttlMs = Math.max(0, (pingCacheSeconds || 0) * 1000);
 
     const tasks = [];
     connections.forEach((c) => {
@@ -102,24 +111,42 @@ export default function NetworkMapDashboard() {
       const canPingTo =
         srcTo && ['jumphost', 'home'].includes(String(srcTo.type || '').toLowerCase()) && c.internalToFrom;
 
-      // Пингуем по ВНУТРЕННИМ адресам туннеля из /network-config:
-      // server1 -> remoteIp, server2 -> localIp. serverId — ключ (id/dns/ip) как в servers.json.
+      // Проверка кеша: если TTL не истёк, не запускаем новый запрос
+      const keyFromTo = key(from, to);
+      const keyToFrom = key(to, from);
+      const now = Date.now();
+      if (ttlMs > 0) {
+        const tsFrom = pingTimestampsRef.current[keyFromTo];
+        if (tsFrom && now - tsFrom < ttlMs) {
+          // уже есть актуальное значение для from->to
+        } else if (!canPingFrom) {
+          // если пинговать нельзя, но кеша нет — оставляем как есть
+        }
+        const tsTo = pingTimestampsRef.current[keyToFrom];
+        if (tsTo && now - tsTo < ttlMs) {
+          // уже есть актуальное значение для to->from
+        } else if (!canPingTo) {
+          // нельзя пинговать и кеша нет — пропускаем
+        }
+      }
+
+      // Пингуем по ВНУТРЕННИМ адресам туннеля из /network-config
       if (canPingFrom) {
         tasks.push(async () => {
           if (pingAbortRef.current) return;
           try {
             const { data } = await api.post('/mikrotik/ping', {
               serverId: c.fromKey,
-              // ВАЖНО: передаём внутренний IP и как target, и как gatewayIp,
-              // чтобы backend мог по gatewayIp найти нужный tunnel interface.
               target: c.internalFromTo,
               gatewayIp: c.internalFromTo,
               count: 3,
             });
             const ms = typeof data?.avgMs === 'number' ? Math.round(data.avgMs) : null;
-            return { key: key(from, to), ms };
+            pingTimestampsRef.current[keyFromTo] = Date.now();
+            setPingMap((prev) => ({ ...prev, [keyFromTo]: ms }));
           } catch {
-            return { key: key(from, to), ms: null };
+            pingTimestampsRef.current[keyFromTo] = Date.now();
+            setPingMap((prev) => ({ ...prev, [keyFromTo]: null }));
           }
         });
       }
@@ -130,29 +157,25 @@ export default function NetworkMapDashboard() {
           try {
             const { data } = await api.post('/mikrotik/ping', {
               serverId: c.toKey,
-              // Аналогично для обратного направления
               target: c.internalToFrom,
               gatewayIp: c.internalToFrom,
               count: 3,
             });
             const ms = typeof data?.avgMs === 'number' ? Math.round(data.avgMs) : null;
-            return { key: key(to, from), ms };
+            pingTimestampsRef.current[keyToFrom] = Date.now();
+            setPingMap((prev) => ({ ...prev, [keyToFrom]: ms }));
           } catch {
-            return { key: key(to, from), ms: null };
+            pingTimestampsRef.current[keyToFrom] = Date.now();
+            setPingMap((prev) => ({ ...prev, [keyToFrom]: null }));
           }
         });
       }
     });
 
-    const results = await runWithLimit(tasks, 4);
+    await runWithLimit(tasks, 4);
     if (pingAbortRef.current) return;
-    results.forEach((r) => {
-      const v = r?.value;
-      if (v && v.key != null) newMap[v.key] = v.ms ?? null;
-    });
-    setPingMap((prev) => ({ ...prev, ...newMap }));
     setPingLoading(false);
-  }, [connections]);
+  }, [connections, servers, pingCacheSeconds]);
 
   useEffect(() => {
     fetchData();
diff --git a/frontend/src/SettingsPage.jsx b/frontend/src/SettingsPage.jsx
index 5063e73..06ab687 100644
--- a/frontend/src/SettingsPage.jsx
+++ b/frontend/src/SettingsPage.jsx
@@ -68,6 +68,7 @@ export default function SettingsPage() {
   const [baseAS, setBaseAS] = useState('65001');
   const [pingDomain, setPingDomain] = useState('');
   const [pingCacheMinutes, setPingCacheMinutes] = useState('');
+  const [networkMapPingCacheSeconds, setNetworkMapPingCacheSeconds] = useState('');
   const [ptrZoneReplaceFrom, setPtrZoneReplaceFrom] = useState('');
   const [ptrZoneReplaceTo, setPtrZoneReplaceTo] = useState('');
   const [pingServicesSource, setPingServicesSource] = useState('web');
@@ -206,6 +207,11 @@ export default function SettingsPage() {
         setPingCacheMinutes(
           data?.pingCacheMinutes != null ? String(data.pingCacheMinutes) : ''
         );
+        setNetworkMapPingCacheSeconds(
+          data?.networkMapPingCacheSeconds != null
+            ? String(data.networkMapPingCacheSeconds)
+            : ''
+        );
         setPtrZoneReplaceFrom(String(data?.ptrZoneReplaceFrom || ''));
         setPtrZoneReplaceTo(String(data?.ptrZoneReplaceTo || ''));
         setPingServicesSource(
@@ -300,6 +306,10 @@ export default function SettingsPage() {
         baseAS: String(baseAS || '65001').trim(),
         pingDomain: String(pingDomain || '').trim(),
         pingCacheMinutes: Math.max(0, parseInt(pingCacheMinutes, 10) || 0),
+        networkMapPingCacheSeconds: Math.max(
+          0,
+          parseInt(networkMapPingCacheSeconds, 10) || 0
+        ),
         ptrZoneReplaceFrom: String(ptrZoneReplaceFrom || '').trim(),
         ptrZoneReplaceTo: String(ptrZoneReplaceTo || '').trim(),
         pingServicesSource:
@@ -528,6 +538,19 @@ export default function SettingsPage() {
                       min={0}
                     />
                   </div>
+                  <div className="col-md-6">
+                    <FormField
+                      label="Кеш пингов на карте сети (сек)"
+                      name="networkMapPingCacheSeconds"
+                      type="number"
+                      value={networkMapPingCacheSeconds}
+                      onChange={setNetworkMapPingCacheSeconds}
+                      placeholder="0"
+                      helpText="0 — без кеша. Иначе пинги между серверами на карте сети кешируются на указанный срок."
+                      disabled={saving}
+                      min={0}
+                    />
+                  </div>
                 </div>
               </>
               )}