Add optional policy MIB toggle and pre-walk ping check

- Add SNMP_WALK_POLICIES env var and UI checkbox to skip ACD-POLICY-MIB (~73% of all OIDs), cutting walk time from ~25s to ~11s - Add /api/ping endpoint with reachability check before walk starts - Show "NID Management is UP" (green) or "NID is DOWN" (red) status - Block walk if target is unreachable Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-04 10:02:52 -07:00
4 changed files with 352 additions and 228 deletions
--- a/.env.example
+++ b/.env.example
@ -22,5 +22,10 @@ SNMP_COMMUNITY=public
 # "targeted" = walk only subtrees used by the viewer (faster)
 SNMP_WALK_MODE=targeted

+# ── Policy data ──
+# ACD-POLICY-MIB is ~73% of all OIDs. Set to "false" to skip it for faster walks.
+# The Traffic Policies card will be empty when disabled.
+SNMP_WALK_POLICIES=true
+
 # ── Server ──
 SERVER_PORT=5525
--- a/build_nid_viewer.py
+++ b/build_nid_viewer.py
@ -60,6 +60,8 @@ def build_html(data: dict) -> str:
 <title>NID Viewer &mdash; {page_title}</title>
 <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
 <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css" rel="stylesheet">
+<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
+<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
 <style>
 :root {{
  --bg-dark: #0f1117;
@ -161,7 +163,7 @@ body {{
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
-  gap: 1.2rem;
+  gap: 1.5rem;
  flex-wrap: wrap;
  position: relative;
 }}
@ -210,8 +212,8 @@ body {{
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
-  white-space: nowrap;
  line-height: 1.2;
+  min-height: 1.8em;
 }}
 .mgmt-port {{
  width: 40px;
@ -349,6 +351,20 @@ body {{
  font-size: 0.85rem;
 }}
 .walk-select:focus {{ outline: none; border-color: var(--accent); }}
+.walk-toggle {{
+  display: flex;
+  align-items: center;
+  gap: 0.35rem;
+  font-size: 0.8rem;
+  color: var(--text-muted);
+  cursor: pointer;
+  white-space: nowrap;
+  user-select: none;
+}}
+.walk-toggle input[type="checkbox"] {{
+  accent-color: var(--accent);
+  cursor: pointer;
+}}
 .walk-btn {{
  background: var(--accent);
  border: none;
@ -459,14 +475,21 @@ body {{
  text-transform: uppercase;
  letter-spacing: 0.05em;
 }}
-.lldp-row {{
+/* ── LLDP vertical columns ── */
+.lldp-columns {{
  display: flex;
-  align-items: center;
-  gap: 0;
-  margin-bottom: 0.75rem;
+  gap: 1rem;
+  align-items: stretch;
 }}
-.lldp-row:last-child {{ margin-bottom: 0; }}
-.lldp-local-slot {{
+.lldp-col {{
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  min-width: 0;
+}}
+.lldp-col.idle {{ opacity: 0.4; }}
+.lldp-col-header {{
  width: 56px;
  height: 44px;
  border-radius: 4px;
@ -479,147 +502,178 @@ body {{
  font-weight: 600;
  flex-shrink: 0;
 }}
-.lldp-local-slot.present-link {{
+.lldp-col-header.present-link {{
  background: rgba(34,197,94,0.15);
  border-color: var(--green);
  color: var(--green);
 }}
-.lldp-local-slot.present-nolink {{
+.lldp-col-header.present-nolink {{
  background: rgba(245,158,11,0.15);
  border-color: var(--amber);
  color: var(--amber);
 }}
-.lldp-local-slot.empty {{
+.lldp-col-header.empty {{
  background: #1a1d24;
  border-color: #2d3340;
  color: #555;
 }}
-.lldp-local-slot .slot-label {{
+.lldp-col-header .slot-label {{
  font-size: 0.6rem;
  color: var(--text-muted);
 }}
-.lldp-connector {{
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  min-width: 80px;
-  max-width: 200px;
-  flex: 1;
-  padding: 0 0.4rem;
-}}
-.lldp-connector .link-line {{
-  width: 100%;
-  height: 3px;
-  border-radius: 2px;
-  position: relative;
-}}
-.lldp-connector .link-line.up {{
-  background: var(--green);
-  box-shadow: 0 0 8px rgba(34,197,94,0.3);
-}}
-.lldp-connector .link-line.down {{
-  background: var(--amber);
-  box-shadow: 0 0 8px rgba(245,158,11,0.3);
-}}
-.lldp-connector .link-line::before,
-.lldp-connector .link-line::after {{
-  content: '';
-  position: absolute;
-  top: 50%;
-  width: 8px;
-  height: 8px;
-  border-radius: 50%;
-  transform: translateY(-50%);
-}}
-.lldp-connector .link-line.up::before,
-.lldp-connector .link-line.up::after {{ background: var(--green); }}
-.lldp-connector .link-line.down::before,
-.lldp-connector .link-line.down::after {{ background: var(--amber); }}
-.lldp-connector .link-line::before {{ left: -4px; }}
-.lldp-connector .link-line::after {{ right: -4px; }}
-.lldp-connector .link-port-label {{
+.lldp-col-port-label {{
  font-size: 0.6rem;
  color: var(--text-muted);
  text-align: center;
-  white-space: nowrap;
  font-family: 'JetBrains Mono', monospace;
-  margin: 0.2rem 0;
+  margin: 0.3rem 0 0.15rem;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  max-width: 100%;
 }}
-.lldp-remote {{
+.lldp-col-line {{
+  width: 3px;
+  height: 36px;
+  border-radius: 2px;
+  margin: 0.15rem 0;
+  position: relative;
+}}
+.lldp-col-line.up {{
+  background: var(--green);
+  box-shadow: 0 0 8px rgba(34,197,94,0.3);
+}}
+.lldp-col-line.down {{
+  background: var(--amber);
+  box-shadow: 0 0 8px rgba(245,158,11,0.3);
+}}
+.lldp-col-line.idle {{
+  background: #2d3340;
+  height: 24px;
+  opacity: 0.5;
+}}
+.lldp-col-line::before,
+.lldp-col-line::after {{
+  content: '';
+  position: absolute;
+  left: 50%;
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  transform: translateX(-50%);
+}}
+.lldp-col-line.up::before,
+.lldp-col-line.up::after {{ background: var(--green); }}
+.lldp-col-line.down::before,
+.lldp-col-line.down::after {{ background: var(--amber); }}
+.lldp-col-line::before {{ top: -4px; }}
+.lldp-col-line::after {{ bottom: -4px; }}
+.lldp-col-line.idle::before,
+.lldp-col-line.idle::after {{ display: none; }}
+.lldp-col-remote {{
  background: #1e2128;
  border: 1px solid #3a3f4b;
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
-  min-width: 200px;
-  max-width: 320px;
-  flex-shrink: 0;
+  width: 100%;
+  margin-top: 0.15rem;
+  flex: 1;
 }}
-.lldp-remote .remote-hostname {{
+.lldp-col-remote .remote-hostname {{
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  word-break: break-all;
 }}
-.lldp-remote .remote-model {{
+.lldp-col-remote .remote-model {{
  font-size: 0.72rem;
  color: var(--cyan);
  margin-bottom: 0.3rem;
 }}
-.lldp-remote .remote-detail {{
+.lldp-col-remote .remote-detail {{
  font-size: 0.7rem;
  color: var(--text-muted);
  margin: 0.1rem 0;
  font-family: 'JetBrains Mono', monospace;
 }}
-.lldp-remote .remote-detail .rlabel {{
+.lldp-col-remote .remote-detail .rlabel {{
  color: #555;
  display: inline-block;
  min-width: 32px;
 }}
-.lldp-remote .remote-mgmt {{
+.lldp-col-remote .remote-mgmt {{
  font-size: 0.75rem;
  color: var(--green);
  font-weight: 600;
  margin-top: 0.3rem;
  font-family: 'JetBrains Mono', monospace;
 }}
-.lldp-row.idle {{
-  opacity: 0.4;
-}}
-.lldp-row.idle .lldp-connector {{
-  min-width: 40px;
-}}
-.lldp-idle-label {{
+.lldp-col-idle-label {{
  font-size: 0.7rem;
  color: #555;
  font-style: italic;
+  margin-top: 0.3rem;
 }}
-.topo-stats-table {{
-  width: 100%;
-  margin-top: 1rem;
+.lldp-col-divider {{
+  width: 1px;
+  align-self: stretch;
+  border-left: 1px dashed #3a3f4b;
+  margin: 0 0.25rem;
+}}
+/* ── Location Map ── */
+#sec-map .card-dark {{
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+}}
+#sec-map .card-body {{
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+}}
+#nid-map {{
+  flex: 1;
+  min-height: 400px;
+  border-radius: 4px;
+  background: var(--bg-dark);
+}}
+.leaflet-container {{
+  background: var(--bg-dark) !important;
+}}
+.map-coords {{
  font-size: 0.75rem;
-}}
-.topo-stats-table th {{
  color: var(--text-muted);
-  font-weight: 500;
-  padding: 0.3rem 0.5rem;
-  border-bottom: 1px solid var(--border-color);
-}}
-.topo-stats-table td {{
-  padding: 0.3rem 0.5rem;
+  margin-top: 0.4rem;
  font-family: 'JetBrains Mono', monospace;
 }}
+#sec-header .card-dark {{
+  height: 100%;
+}}
+#sec-sfp > .card-dark,
+#sec-alarms > .card-dark,
+#sec-filters > .card-dark,
+#sec-regulators > .card-dark {{
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+}}
+#sec-alarms > .card-dark > .card-body,
+#sec-regulators > .card-dark > .card-body {{
+  flex: 1;
+}}
 </style>
 </head>
 <body>
-<div class="container-fluid py-3" style="max-width:1400px">
+<div class="container-fluid py-3" style="max-width:1800px">

 <!-- ═══════════════ 0. WALK CONTROL ═══════════════ -->
 <div id="sec-walk"></div>

-<!-- ═══════════════ 1. DEVICE HEADER ═══════════════ -->
-<div id="sec-header"></div>
+<!-- ═══════════════ 1. DEVICE HEADER + MAP ═══════════════ -->
+<div style="display:flex;gap:1rem;align-items:stretch">
+  <div id="sec-header" style="flex:1;min-width:0"></div>
+  <div id="sec-map" style="flex:1;min-width:0"></div>
+</div>

 <!-- ═══════════════ 2. FRONT PANEL ═══════════════ -->
 <div id="sec-panel"></div>
@ -630,20 +684,20 @@ body {{
 <!-- ═══════════════ 4. INTERFACES TABLE ═══════════════ -->
 <div id="sec-interfaces"></div>

-<!-- ═══════════════ 5. SFP CARDS ═══════════════ -->
-<div id="sec-sfp"></div>
-
-<!-- ═══════════════ 6. ALARMS ═══════════════ -->
-<div id="sec-alarms"></div>
+<!-- ═══════════════ 5–6. SFP + ALARMS (side by side) ═══════════════ -->
+<div style="display:flex;gap:1rem;align-items:stretch">
+  <div id="sec-sfp" style="flex:1;min-width:0;display:flex;flex-direction:column"></div>
+  <div id="sec-alarms" style="flex:1;min-width:0;display:flex;flex-direction:column"></div>
+</div>

 <!-- ═══════════════ 7. TRAFFIC POLICIES ═══════════════ -->
 <div id="sec-policies"></div>

-<!-- ═══════════════ 8. L2 FILTERS ═══════════════ -->
-<div id="sec-filters"></div>
-
-<!-- ═══════════════ 9. REGULATORS ═══════════════ -->
-<div id="sec-regulators"></div>
+<!-- ═══════════════ 8–9. L2 FILTERS + REGULATORS (side by side) ═══════════════ -->
+<div style="display:flex;gap:1rem;align-items:stretch">
+  <div id="sec-filters" style="flex:1;min-width:0;display:flex;flex-direction:column"></div>
+  <div id="sec-regulators" style="flex:1;min-width:0;display:flex;flex-direction:column"></div>
+</div>

 <!-- ═══════════════ 10. COVERAGE MATRIX ═══════════════ -->
 <div id="sec-coverage"></div>
@ -775,6 +829,10 @@ function renderWalkControl() {{
            <option value="targeted">Targeted</option>
            <option value="full">Full</option>
          </select>
+          <label class="walk-toggle" title="ACD-POLICY-MIB is ~73% of all OIDs — disable for faster walks">
+            <input type="checkbox" id="walk-policies" checked>
+            Policies
+          </label>
          <button class="walk-btn" id="walk-btn" onclick="startWalk()">
            <i class="bi bi-play-fill"></i> Walk
          </button>
@ -795,6 +853,7 @@ let walkEventSource = null;
 function startWalk() {{
  const target = document.getElementById('walk-target').value.trim();
  const mode = document.getElementById('walk-mode').value;
+  const policies = document.getElementById('walk-policies').checked;
  const btn = document.getElementById('walk-btn');

  if (!target) {{
@ -803,6 +862,26 @@ function startWalk() {{
  }}

  btn.disabled = true;
+  btn.innerHTML = '<i class="bi bi-hourglass-split"></i> Pinging...';
+  updateWalkStatus('running', 'Checking reachability...');
+
+  // Step 1: Ping check
+  fetch('/api/ping', {{
+    method: 'POST',
+    headers: {{ 'Content-Type': 'application/json' }},
+    body: JSON.stringify({{ target }})
+  }})
+  .then(r => r.json())
+  .then(ping => {{
+    if (!ping.reachable) {{
+      updateWalkStatus('error', 'NID is DOWN. Verify Local Power and Router Interface Status.');
+      resetWalkBtn();
+      return;
+    }}
+    updateWalkStatus('complete', 'NID Management is UP');
+
+    // Step 2: Proceed with walk after brief pause to show UP status
+    setTimeout(() => {{
      btn.innerHTML = '<i class="bi bi-hourglass-split"></i> Walking...';
      updateWalkStatus('running', 'Starting walk...');

@ -812,7 +891,7 @@ function startWalk() {{
      fetch('/api/walk', {{
        method: 'POST',
        headers: {{ 'Content-Type': 'application/json' }},
-    body: JSON.stringify({{ target, mode }})
+        body: JSON.stringify({{ target, mode, policies }})
      }})
      .then(r => r.json())
      .then(resp => {{
@ -832,7 +911,6 @@ function startWalk() {{
            updateWalkStatus('complete', s.message);
            walkEventSource.close();
            walkEventSource = null;
-        // Reload to pick up fresh data
            setTimeout(() => window.location.reload(), 800);
          }} else if (s.state === 'error') {{
            updateWalkStatus('error', s.message);
@ -846,14 +924,18 @@ function startWalk() {{
        walkEventSource.onerror = () => {{
          walkEventSource.close();
          walkEventSource = null;
-      // SSE closed — could be server-side close after complete/error
-      // Check if we already handled it; if not, it was an unexpected close
        }};
      }})
      .catch(err => {{
        updateWalkStatus('error', 'Failed to connect: ' + err.message);
        resetWalkBtn();
      }});
+    }}, 600);
+  }})
+  .catch(err => {{
+    updateWalkStatus('error', 'Ping check failed: ' + err.message);
+    resetWalkBtn();
+  }});
 }}

 function updateWalkStatus(state, message) {{
@ -983,6 +1065,40 @@ function renderHeader() {{
    </div>`;
 }}

+// ── 1b. Location Map ────────────────────────────────
+function renderMap() {{
+  const d = DATA.device || {{}};
+  const loc = (d.sysLocation || '').trim();
+  const m = loc.match(/^(-?\d+\.?\d*)\s*,\s*(-?\d+\.?\d*)$/);
+  if (!m) return;  // no valid coordinates — skip map
+
+  const lat = parseFloat(m[1]);
+  const lon = parseFloat(m[2]);
+  const hostname = d.sysName || d.identifier || 'NID';
+
+  document.getElementById('sec-map').innerHTML = `
+    <div class="card-dark">
+      <div class="card-header collapsible"><i class="bi bi-geo-alt"></i> Location Map<i class="bi bi-chevron-down collapse-chevron"></i></div>
+      <div class="card-body">
+        <div id="nid-map"></div>
+        <div class="map-coords"><i class="bi bi-crosshair"></i> ${{lat.toFixed(6)}}, ${{lon.toFixed(6)}}</div>
+      </div>
+    </div>`;
+
+  const map = L.map('nid-map').setView([lat, lon], 15);
+  L.tileLayer('https://{{s}}.basemaps.cartocdn.com/dark_all/{{z}}/{{x}}/{{y}}{{r}}.png', {{
+    attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OSM</a> &copy; <a href="https://carto.com/">CARTO</a>',
+    subdomains: 'abcd',
+    maxZoom: 19
+  }}).addTo(map);
+  L.marker([lat, lon]).addTo(map)
+    .bindPopup(`<b>${{esc(hostname)}}</b><br>${{lat.toFixed(6)}}, ${{lon.toFixed(6)}}`)
+    .openPopup();
+
+  // Leaflet needs a resize nudge when rendered in a hidden/collapsed container
+  setTimeout(() => map.invalidateSize(), 200);
+}}
+
 // ── 2. Front Panel ───────────────────────────────────
 function renderPanel() {{
  const connectors = DATA.connectors || {{}};
@ -1652,7 +1768,6 @@ function parseRemotePlatform(sysDesc, sysName) {{

 function renderLldp() {{
  const neighbors = DATA.lldp_neighbors || {{}};
-  const stats = DATA.lldp_stats || {{}};
  const ifaces = DATA.interfaces || {{}};
  const sfpInfo = DATA.sfp_info || {{}};
  const device = DATA.device || {{}};
@ -1664,7 +1779,6 @@ function renderLldp() {{
  const localName = device.identifier || device.sysName || 'NID';
  const localModel = device.commercialName || device.sysDescr || 'NID';

-  // Determine slot state — connector-type aware (same logic as renderPanel)
  function slotState(portIdx) {{
    const conn = connectors[portIdx];
    const isSfp = conn && conn.type === '14';
@ -1682,40 +1796,11 @@ function renderLldp() {{
    }}
  }}

-  // Build a row for each network port (1-4)
-  let rowsHtml = '';
-  for (let i = 1; i <= 4; i++) {{
-    const portKey = String(i);
-    const conn = connectors[portKey] || {{}};
-    const isSfp = conn.type === '14';
-    const nbr = neighborByPort[portKey];
-    const state = slotState(portKey);
-    const iface = ifaces[portKey] || {{}};
-    const localUp = isUp(iface.ifOperStatus);
-    const slotName = conn.name || (isSfp ? `SFP-${{i}}` : `RJ45-${{i}}`);
-    const icon = isSfp
-      ? (state === 'empty' ? '<i class="bi bi-dash"></i>' :
-         state === 'present-link' ? '<i class="bi bi-arrow-left-right"></i>' :
-         '<i class="bi bi-plug"></i>')
-      : '<i class="bi bi-ethernet"></i>';
-
-    if (nbr) {{
+  function buildNeighborCard(nbr, cssClass) {{
    const platform = parseRemotePlatform(nbr.remSysDesc, nbr.remSysName);
    const shortName = (nbr.remSysName || '').split('.')[0] || 'Unknown';
    const modelLine = platform.vendor ? `${{platform.vendor}} ${{platform.model}}` : platform.model;
-      const linkClass = localUp ? 'up' : 'down';
-
-      rowsHtml += `
-        <div class="lldp-row">
-          <div class="lldp-local-slot ${{state}}">
-            ${{icon}}<span class="slot-label">${{esc(slotName)}}</span>
-          </div>
-          <div class="lldp-connector">
-            <div class="link-port-label">${{esc(iface.ifName || nbr.localPortName || 'Port ' + i)}}</div>
-            <div class="link-line ${{linkClass}}"></div>
-            <div class="link-port-label">${{esc(nbr.remPortId || '?')}}</div>
-          </div>
-          <div class="lldp-remote">
+    return `<div class="${{cssClass}}">
      <div class="remote-hostname">${{esc(shortName)}}</div>
      <div class="remote-model">${{esc(modelLine)}}</div>
      ${{platform.firmware ? `<div class="remote-detail"><span class="rlabel">FW</span> ${{esc(platform.firmware)}}</div>` : ''}}
@ -1730,89 +1815,80 @@ function renderLldp() {{
          nbr.capsEnabled === '4' ? '<span style="color:var(--cyan)">Router</span>' :
          'Cap=' + (nbr.capsEnabled||'?')}}
      </div>
-          </div>
    </div>`;
-    }} else {{
-      rowsHtml += `
-        <div class="lldp-row idle">
-          <div class="lldp-local-slot ${{state}}">
+  }}
+
+  // Build vertical columns for ports 1-4
+  let colsHtml = '';
+  for (let i = 1; i <= 4; i++) {{
+    const portKey = String(i);
+    const conn = connectors[portKey] || {{}};
+    const isSfp = conn.type === '14';
+    const nbr = neighborByPort[portKey];
+    const state = slotState(portKey);
+    const iface = ifaces[portKey] || {{}};
+    const localUp = isUp(iface.ifOperStatus);
+    const slotName = conn.name || (isSfp ? `SFP-${{i}}` : `RJ45-${{i}}`);
+    const icon = isSfp
+      ? (state === 'empty' ? '<i class="bi bi-dash"></i>' :
+         state === 'present-link' ? '<i class="bi bi-arrow-left-right"></i>' :
+         '<i class="bi bi-plug"></i>')
+      : '<i class="bi bi-ethernet"></i>';
+    const portLabel = iface.ifName || 'Port ' + i;
+
+    if (nbr) {{
+      const linkClass = localUp ? 'up' : 'down';
+      colsHtml += `
+        <div class="lldp-col">
+          <div class="lldp-col-header ${{state}}">
            ${{icon}}<span class="slot-label">${{esc(slotName)}}</span>
          </div>
-          <div class="lldp-connector">
-            <div class="link-line" style="background:#2d3340;height:2px;opacity:0.5"></div>
+          <div class="lldp-col-port-label">${{esc(portLabel)}}</div>
+          <div class="lldp-col-line ${{linkClass}}"></div>
+          <div class="lldp-col-port-label">${{esc(nbr.remPortId || '?')}}</div>
+          ${{buildNeighborCard(nbr, 'lldp-col-remote')}}
+        </div>`;
+    }} else {{
+      colsHtml += `
+        <div class="lldp-col idle">
+          <div class="lldp-col-header ${{state}}">
+            ${{icon}}<span class="slot-label">${{esc(slotName)}}</span>
          </div>
-          <div class="lldp-idle-label">No LLDP neighbor</div>
+          <div class="lldp-col-port-label">${{esc(portLabel)}}</div>
+          <div class="lldp-col-line idle"></div>
+          <div class="lldp-col-idle-label">No LLDP neighbor</div>
        </div>`;
    }}
  }}

-  // Include MGMT port if it has a neighbor
+  // MGMT column (port 5)
  const mgmtNbr = neighborByPort['5'];
  if (mgmtNbr) {{
    const mgmtIface = ifaces['5'] || {{}};
    const mgmtUp = isUp(mgmtIface.ifOperStatus);
-    const platform = parseRemotePlatform(mgmtNbr.remSysDesc, mgmtNbr.remSysName);
-    const shortName = (mgmtNbr.remSysName || '').split('.')[0] || 'Unknown';
-    const modelLine = platform.vendor ? `${{platform.vendor}} ${{platform.model}}` : platform.model;
-    rowsHtml += `
-      <div class="lldp-row" style="margin-top:0.5rem;padding-top:0.5rem;border-top:1px dashed #3a3f4b">
-        <div class="lldp-local-slot ${{mgmtUp ? 'present-link' : 'present-nolink'}}" style="width:40px;font-size:0.55rem">
+    colsHtml += `<div class="lldp-col-divider"></div>`;
+    colsHtml += `
+      <div class="lldp-col">
+        <div class="lldp-col-header ${{mgmtUp ? 'present-link' : 'present-nolink'}}">
          <i class="bi bi-ethernet"></i><span class="slot-label">MGMT</span>
        </div>
-        <div class="lldp-connector">
-          <div class="link-port-label">Management</div>
-          <div class="link-line ${{mgmtUp ? 'up' : 'down'}}"></div>
-          <div class="link-port-label">${{esc(mgmtNbr.remPortId || '?')}}</div>
-        </div>
-        <div class="lldp-remote">
-          <div class="remote-hostname">${{esc(shortName)}}</div>
-          <div class="remote-model">${{esc(modelLine)}}</div>
-          <div class="remote-detail"><span class="rlabel">MAC</span> ${{esc(mgmtNbr.chassisId || '?')}}</div>
-          ${{mgmtNbr.mgmtIPv4 ? `<div class="remote-mgmt"><i class="bi bi-globe2"></i> ${{esc(mgmtNbr.mgmtIPv4)}}</div>` : ''}}
-        </div>
+        <div class="lldp-col-port-label">Management</div>
+        <div class="lldp-col-line ${{mgmtUp ? 'up' : 'down'}}"></div>
+        <div class="lldp-col-port-label">${{esc(mgmtNbr.remPortId || '?')}}</div>
+        ${{buildNeighborCard(mgmtNbr, 'lldp-col-remote')}}
      </div>`;
  }}

-  // Build per-port LLDP stats table
-  let statsRows = '';
-  for (const [port, s] of Object.entries(stats).sort((a,b) => parseInt(a[0]) - parseInt(b[0]))) {{
-    const tx = parseInt(s.txFrames || '0').toLocaleString();
-    const rx = parseInt(s.rxFrames || '0').toLocaleString();
-    const nb = s.neighborsLearned || '0';
-    const name = (ifaces[port] || {{}}).ifName || `Port ${{port}}`;
-    const hasActive = !!neighborByPort[port];
-    const activeMarker = hasActive ? '<span style="color:var(--green)"> (active)</span>' : '';
-    statsRows += `<tr>
-      <td>${{parseInt(port) <= 4 ? 'SFP-' + port : 'MGMT'}}</td>
-      <td>${{esc(name)}}</td>
-      <td style="text-align:right">${{tx}}</td>
-      <td style="text-align:right">${{rx}}</td>
-      <td style="text-align:center">${{nb}}${{activeMarker}}</td>
-    </tr>`;
-  }}
-
  document.getElementById('sec-lldp').innerHTML = `
    <div class="card-dark">
      <div class="card-header collapsible"><i class="bi bi-diagram-3"></i> LLDP Topology<i class="bi bi-chevron-down collapse-chevron"></i></div>
      <div class="card-body">
        <div class="lldp-panel">
          <span class="panel-label">${{esc(localName)}} &mdash; ${{esc(localModel)}}</span>
-          ${{rowsHtml}}
+          <div class="lldp-columns">
+            ${{colsHtml}}
          </div>
-        ${{Object.keys(stats).length ? `
-          <div style="margin-top:1rem">
-            <h6 style="font-size:0.8rem;color:var(--text-muted);margin-bottom:0.5rem">
-              <i class="bi bi-bar-chart"></i> Per-Port LLDP Statistics
-            </h6>
-            <table class="topo-stats-table">
-              <thead><tr>
-                <th>Port</th><th>Interface</th><th style="text-align:right">TX Frames</th>
-                <th style="text-align:right">RX Frames</th><th style="text-align:center">Neighbors</th>
-              </tr></thead>
-              <tbody>${{statsRows}}</tbody>
-            </table>
        </div>
-        ` : ''}}
      </div>
    </div>`;
 }}
@ -2031,6 +2107,7 @@ function renderPortCmp() {{
 // ── Render all sections ──────────────────────────────
 renderWalkControl();
 renderHeader();
+renderMap();
 renderPanel();
 renderLldp();
 renderInterfaces();
--- a/nid-server.py
+++ b/nid-server.py
@ -41,7 +41,6 @@ TARGETED_OIDS = [
    (".1.3.6.1.4.1.22420.1.1",  "ACD-DESC-MIB"),
    (".1.3.6.1.4.1.22420.2.1",  "ACD-ALARM-MIB"),
    (".1.3.6.1.4.1.22420.2.2",  "ACD-FILTER-MIB"),
-    (".1.3.6.1.4.1.22420.2.3",  "ACD-POLICY-MIB"),
    (".1.3.6.1.4.1.22420.2.4",  "ACD-SFP-MIB"),
    (".1.3.6.1.4.1.22420.2.6",  "ACD-REGULATOR-MIB"),
    (".1.3.6.1.4.1.22420.2.8",  "ACD-SMAP-MIB"),
@ -79,6 +78,10 @@ SNMP_V3_PRIV_PROTO = ENV.get("SNMP_V3_PRIV_PROTO", "AES")
 SNMP_V3_PRIV_PASS = ENV.get("SNMP_V3_PRIV_PASS", "")
 SNMP_V3_SEC_LEVEL = ENV.get("SNMP_V3_SEC_LEVEL", "authPriv")

+# Conditionally include heavy policy MIB (~73% of all OIDs)
+if ENV.get("SNMP_WALK_POLICIES", "true").lower() == "true":
+    TARGETED_OIDS.append((".1.3.6.1.4.1.22420.2.3", "ACD-POLICY-MIB"))
+
 # ── Walk state (shared across threads) ───────────────────────────────

 walk_lock = threading.Lock()
@ -125,7 +128,7 @@ def build_snmp_auth() -> list:
    return ["-v", SNMP_VERSION, "-c", SNMP_COMMUNITY]


-def run_walk(target: str, mode: str):
+def run_walk(target: str, mode: str, policies: bool = True):
    """Execute the full walk pipeline in a background thread."""
    global latest_json

@ -142,6 +145,11 @@ def run_walk(target: str, mode: str):
    auth = build_snmp_auth()
    t_start = time.time()

+    # Build OID list for this walk — optionally exclude heavy policy MIB
+    walk_oids = list(TARGETED_OIDS)
+    if not policies:
+        walk_oids = [(oid, lbl) for oid, lbl in walk_oids if lbl != "ACD-POLICY-MIB"]
+
    try:
        # ── Step 1: snmpwalk ──────────────────────────────────────
        # Use snmpbulkwalk (GETBULK PDUs) when available — much faster
@ -157,7 +165,7 @@ def run_walk(target: str, mode: str):
            walk_file.write_text(result.stdout)
        else:
            # Walk subtrees in parallel for speed
-            total = len(TARGETED_OIDS)
+            total = len(walk_oids)
            completed = [0]  # mutable counter for progress
            results_map = {}

@ -175,7 +183,7 @@ def run_walk(target: str, mode: str):
            with ThreadPoolExecutor(max_workers=4) as pool:
                futures = [
                    pool.submit(walk_subtree, i, oid, label)
-                    for i, (oid, label) in enumerate(TARGETED_OIDS)
+                    for i, (oid, label) in enumerate(walk_oids)
                ]
                for fut in as_completed(futures):
                    idx, output = fut.result()
@ -309,11 +317,39 @@ class NIDHandler(BaseHTTPRequestHandler):
    def do_POST(self):
        if self.path == "/api/walk":
            self._handle_walk()
+        elif self.path == "/api/ping":
+            self._handle_ping()
        elif self.path == "/api/clear":
            self._handle_clear()
        else:
            self._send(404, "text/plain", b"Not found")

+    def _handle_ping(self):
+        """Ping a target IP to check reachability."""
+        length = int(self.headers.get("Content-Length", 0))
+        body = json.loads(self.rfile.read(length)) if length else {}
+        target = body.get("target", "").strip()
+
+        if not target:
+            self._send_json(400, {"error": "target IP required"})
+            return
+
+        ip_re = re.compile(r"^\d{1,3}(\.\d{1,3}){3}$")
+        if not ip_re.match(target):
+            self._send_json(400, {"error": f"Invalid IP address: {target}"})
+            return
+
+        try:
+            result = subprocess.run(
+                ["ping", "-c", "1", "-W", "2", target],
+                capture_output=True, text=True, timeout=5,
+            )
+            reachable = result.returncode == 0
+        except (subprocess.TimeoutExpired, FileNotFoundError):
+            reachable = False
+
+        self._send_json(200, {"reachable": reachable, "target": target})
+
    def _handle_walk(self):
        """Start a walk in a background thread."""
        current, _ = get_status()
@ -325,6 +361,7 @@ class NIDHandler(BaseHTTPRequestHandler):
        body = json.loads(self.rfile.read(length)) if length else {}
        target = body.get("target", "").strip()
        mode = body.get("mode", "targeted").strip()
+        policies = body.get("policies", True)

        if not target:
            self._send_json(400, {"error": "target IP required"})
@ -334,7 +371,7 @@ class NIDHandler(BaseHTTPRequestHandler):
            return

        set_status("walking", message="Starting walk...", progress=1)
-        thread = threading.Thread(target=run_walk, args=(target, mode), daemon=True)
+        thread = threading.Thread(target=run_walk, args=(target, mode, policies), daemon=True)
        thread.start()
        self._send_json(200, {"status": "started", "target": target, "mode": mode})

--- a/snmp-walk.sh
+++ b/snmp-walk.sh
@ -75,6 +75,8 @@ fi

 # ── Define OID subtrees ──────────────────────────────────────────────
 # Targeted: only what the viewer/parser needs
+WALK_POLICIES="${SNMP_WALK_POLICIES:-true}"
+
 TARGETED_OIDS=(
    .1.3.6.1.2.1.1            # System (sysDescr, sysName, sysUpTime, …)
    .1.3.6.1.2.1.2            # IF-MIB (interface table)
@ -85,13 +87,16 @@ TARGETED_OIDS=(
    .1.3.6.1.4.1.22420.1.1    # ACD-DESC-MIB (device identity, connectors, sensors)
    .1.3.6.1.4.1.22420.2.1    # ACD-ALARM-MIB
    .1.3.6.1.4.1.22420.2.2    # ACD-FILTER-MIB
-    .1.3.6.1.4.1.22420.2.3    # ACD-POLICY-MIB (L2 policies, stats)
    .1.3.6.1.4.1.22420.2.4    # ACD-SFP-MIB (transceiver info/diag)
    .1.3.6.1.4.1.22420.2.6    # ACD-REGULATOR-MIB
    .1.3.6.1.4.1.22420.2.8    # ACD-SMAP-MIB (CoS profiles)
    .1.3.6.1.4.1.22420.2.9    # ACD-PORT-MIB (port config/status)
 )

+if [[ "$WALK_POLICIES" == "true" ]]; then
+    TARGETED_OIDS+=(.1.3.6.1.4.1.22420.2.3)  # ACD-POLICY-MIB (~73% of all OIDs)
+fi
+
 # ── Prepare output paths ─────────────────────────────────────────────
 TIMESTAMP="$(date +%Y-%m-%d_%H-%M-%S)"
 SAFE_IP="${TARGET//./-}"