Fix TruthValue handling for different firmware versions

Some Accedian firmware reports SNMP TruthValue fields as '1'/'2'
(INTEGER) while others use 'true'/'false' (textual). Add isTrue()
helper that accepts both formats and replace all 15+ boolean checks
across the viewer (present, diagCapable, active, enabled, filter
enable flags, etc).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.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

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: 1rem;
-  gap: 0;
+  align-items: stretch;
-  margin-bottom: 0.75rem;
 }}
-.lldp-row:last-child {{ margin-bottom: 0; }}
+.lldp-col {{
-.lldp-local-slot {{
+  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 {{
+.lldp-col-port-label {{
-  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 {{
   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;
+  width: 100%;
-  max-width: 320px;
+  margin-top: 0.15rem;
-  flex-shrink: 0;
+  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 {{
+.lldp-col-idle-label {{
-  opacity: 0.4;
-}}
-.lldp-row.idle .lldp-connector {{
-  min-width: 40px;
-}}
-.lldp-idle-label {{
   font-size: 0.7rem;
   color: #555;
   font-style: italic;
+  margin-top: 0.3rem;
 }}
-.topo-stats-table {{
+.lldp-col-divider {{
-  width: 100%;
+  width: 1px;
-  margin-top: 1rem;
+  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;
+  margin-top: 0.4rem;
-  padding: 0.3rem 0.5rem;
-  border-bottom: 1px solid var(--border-color);
-}}
-.topo-stats-table td {{
-  padding: 0.3rem 0.5rem;
   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 ═══════════════ -->
+<!-- ═══════════════ 1. DEVICE HEADER + MAP ═══════════════ -->
-<div id="sec-header"></div>
+<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 ═══════════════ -->
+<!-- ═══════════════ 5–6. SFP + ALARMS (side by side) ═══════════════ -->
-<div id="sec-sfp"></div>
+<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>
-<!-- ═══════════════ 6. ALARMS ═══════════════ -->
+  <div id="sec-alarms" style="flex:1;min-width:0;display:flex;flex-direction:column"></div>
-<div id="sec-alarms"></div>
+</div>
 
 <!-- ═══════════════ 7. TRAFFIC POLICIES ═══════════════ -->
 <div id="sec-policies"></div>
 
-<!-- ═══════════════ 8. L2 FILTERS ═══════════════ -->
+<!-- ═══════════════ 8–9. L2 FILTERS + REGULATORS (side by side) ═══════════════ -->
-<div id="sec-filters"></div>
+<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>
-<!-- ═══════════════ 9. REGULATORS ═══════════════ -->
+  <div id="sec-regulators" style="flex:1;min-width:0;display:flex;flex-direction:column"></div>
-<div id="sec-regulators"></div>
+</div>
 
 <!-- ═══════════════ 10. COVERAGE MATRIX ═══════════════ -->
 <div id="sec-coverage"></div>
@@ -680,6 +734,26 @@ function formatUptime(sec) {{
   p.push(s+'s');
   return p.join(' ');
 }}
+// SNMP TruthValue: some agents return '1'/'2', others 'true'/'false'
+function isTrue(v) {{ return v === '1' || v === 'true' || v === true; }}
+
+// Derive data ports and management port from connectors dynamically
+function getPortLists() {{
+  const connectors = DATA.connectors || {{}};
+  const keys = Object.keys(connectors).sort((a,b) => parseInt(a) - parseInt(b));
+  const dataPorts = [];
+  let mgmtPort = null;
+  for (const k of keys) {{
+    const c = connectors[k];
+    if (c.name && c.name.toLowerCase() === 'management') {{
+      mgmtPort = k;
+    }} else {{
+      dataPorts.push(k);
+    }}
+  }}
+  return {{ dataPorts, mgmtPort }};
+}}
+
 function sevLabel(s) {{
   return {{'0':'INFO','1':'MINOR','2':'MAJOR','3':'CRITICAL'}}[s] || s;
 }}
@@ -775,6 +849,10 @@ 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 +873,7 @@ 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) {{
@@ -803,55 +882,78 @@ function startWalk() {{
   }}
 
   btn.disabled = true;
-  btn.innerHTML = '<i class="bi bi-hourglass-split"></i> Walking...';
+  btn.innerHTML = '<i class="bi bi-hourglass-split"></i> Pinging...';
-  updateWalkStatus('running', 'Starting walk...');
+  updateWalkStatus('running', 'Checking reachability...');
 
-  // Close any previous SSE connection
+  // Step 1: Ping check
-  if (walkEventSource) walkEventSource.close();
+  fetch('/api/ping', {{
-
-  fetch('/api/walk', {{
     method: 'POST',
     headers: {{ 'Content-Type': 'application/json' }},
-    body: JSON.stringify({{ target, mode }})
+    body: JSON.stringify({{ target }})
   }})
   .then(r => r.json())
-  .then(resp => {{
+  .then(ping => {{
-    if (resp.error) {{
+    if (!ping.reachable) {{
-      updateWalkStatus('error', resp.error);
+      updateWalkStatus('error', 'NID is DOWN. Verify Local Power and Router Interface Status.');
       resetWalkBtn();
       return;
     }}
-    // Open SSE for status updates
+    updateWalkStatus('complete', 'NID Management is UP');
-    walkEventSource = new EventSource('/api/status');
-    walkEventSource.onmessage = (e) => {{
-      const s = JSON.parse(e.data);
-      const pct = s.progress || 0;
-      document.getElementById('walk-progress-fill').style.width = pct + '%';
 
-      if (s.state === 'complete') {{
+    // Step 2: Proceed with walk after brief pause to show UP status
-        updateWalkStatus('complete', s.message);
+    setTimeout(() => {{
-        walkEventSource.close();
+      btn.innerHTML = '<i class="bi bi-hourglass-split"></i> Walking...';
-        walkEventSource = null;
+      updateWalkStatus('running', 'Starting walk...');
-        // Reload to pick up fresh data
+
-        setTimeout(() => window.location.reload(), 800);
+      // Close any previous SSE connection
-      }} else if (s.state === 'error') {{
+      if (walkEventSource) walkEventSource.close();
-        updateWalkStatus('error', s.message);
+
-        walkEventSource.close();
+      fetch('/api/walk', {{
-        walkEventSource = null;
+        method: 'POST',
+        headers: {{ 'Content-Type': 'application/json' }},
+        body: JSON.stringify({{ target, mode, policies }})
+      }})
+      .then(r => r.json())
+      .then(resp => {{
+        if (resp.error) {{
+          updateWalkStatus('error', resp.error);
+          resetWalkBtn();
+          return;
+        }}
+        // Open SSE for status updates
+        walkEventSource = new EventSource('/api/status');
+        walkEventSource.onmessage = (e) => {{
+          const s = JSON.parse(e.data);
+          const pct = s.progress || 0;
+          document.getElementById('walk-progress-fill').style.width = pct + '%';
+
+          if (s.state === 'complete') {{
+            updateWalkStatus('complete', s.message);
+            walkEventSource.close();
+            walkEventSource = null;
+            setTimeout(() => window.location.reload(), 800);
+          }} else if (s.state === 'error') {{
+            updateWalkStatus('error', s.message);
+            walkEventSource.close();
+            walkEventSource = null;
+            resetWalkBtn();
+          }} else {{
+            updateWalkStatus('running', s.message);
+          }}
+        }};
+        walkEventSource.onerror = () => {{
+          walkEventSource.close();
+          walkEventSource = null;
+        }};
+      }})
+      .catch(err => {{
+        updateWalkStatus('error', 'Failed to connect: ' + err.message);
         resetWalkBtn();
-      }} else {{
+      }});
-        updateWalkStatus('running', s.message);
+    }}, 600);
-      }}
-    }};
-    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);
+    updateWalkStatus('error', 'Ping check failed: ' + err.message);
     resetWalkBtn();
   }});
 }}
@@ -891,7 +993,7 @@ function renderHeader() {{
   const cfgByNum = {{}};
   for (const [k,v] of Object.entries(alarmCfg)) cfgByNum[v.number] = v;
   for (const [k,a] of Object.entries(alarmStatus)) {{
-    if (a.active === '1') {{
+    if (isTrue(a.active)) {{
       activeCount++;
       const cfg = cfgByNum[a.number];
       if (cfg) sevCounts[cfg.severity] = (sevCounts[cfg.severity]||0) + 1;
@@ -983,6 +1085,40 @@ 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 || {{}};
@@ -1004,7 +1140,7 @@ function renderPanel() {{
     const iface = ifaces[connIdx];
     if (connType(connIdx) === 'sfp') {{
       const sfp = sfpInfo[connIdx];
-      const present = sfp && sfp.present === '1';
+      const present = sfp && isTrue(sfp.present);
       if (!present) return 'empty';
       if (iface && isUp(iface.ifOperStatus)) return 'present-link';
       return 'present-nolink';
@@ -1019,7 +1155,7 @@ function renderPanel() {{
   function sfpLabel(connIdx) {{
     const sfp = sfpInfo[connIdx];
     if (!sfp) return '';
-    if (sfp.present !== '1') return 'EMPTY';
+    if (!isTrue(sfp.present)) return 'EMPTY';
     const pn = sfp.vendorPn || '';
     if (pn.length > 8) return pn.substring(0,8);
     return pn || sfp.vendor || '';
@@ -1034,15 +1170,15 @@ function renderPanel() {{
     return {{ label, alias }};
   }}
 
-  // Build port slots dynamically from connectors 1-4
+  // Build port slots dynamically from connectors
+  const {{ dataPorts, mgmtPort }} = getPortLists();
   let slots = '';
-  for (let i = 1; i <= 4; i++) {{
+  for (const idx of dataPorts) {{
-    const idx = String(i);
     const conn = connectors[idx] || {{}};
     const isSfp = connType(idx) === 'sfp';
     const state = slotState(idx);
     const pi = portInfo(idx);
-    const slotName = conn.name || (isSfp ? `SFP-${{i}}` : `RJ45-${{i}}`);
+    const slotName = conn.name || (isSfp ? `SFP-${{idx}}` : `RJ45-${{idx}}`);
 
     let icon, detail;
     if (isSfp) {{
@@ -1062,7 +1198,7 @@ function renderPanel() {{
       ? `<div class="port-label" title="${{esc(pi.label + (pi.alias ? ' / ' + pi.alias : ''))}}">${{labelParts.join('<br>')}}</div>`
       : '';
     slots += `<div class="sfp-slot-group">
-      <div class="sfp-slot ${{state}}" data-sfp="${{i}}" onclick="selectSfp(${{i}})">
+      <div class="sfp-slot ${{state}}" data-sfp="${{idx}}" onclick="selectSfp(${{idx}})">
         ${{icon}}<span class="slot-label">${{esc(slotName)}}</span>
         <span style="font-size:0.5rem;max-width:52px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap">${{esc(detail)}}</span>
       </div>
@@ -1071,7 +1207,7 @@ function renderPanel() {{
   }}
 
   // Management port
-  const mgmtIf = ifaces['5'];
+  const mgmtIf = mgmtPort ? ifaces[mgmtPort] : null;
   const mgmtUp = mgmtIf && isUp(mgmtIf.ifOperStatus);
   const mgmtSlot = `<div class="mgmt-port ${{mgmtUp ? 'link-up' : 'link-down'}}">
     <i class="bi bi-ethernet"></i><span style="font-size:0.55rem">MGMT</span>
@@ -1081,7 +1217,7 @@ function renderPanel() {{
   // Power feeds
   let pwrHtml = '<div class="pwr-block">';
   for (const [k,p] of Object.entries(pwr)) {{
-    const ok = p.present === '1';
+    const ok = isTrue(p.present);
     pwrHtml += `<div><span class="pwr-led ${{ok?'ok':'fail'}}"></span>${{esc(p.name)}} ${{ok?'OK':'ABSENT'}}</div>`;
   }}
   pwrHtml += '</div>';
@@ -1195,27 +1331,27 @@ function renderSfp() {{
   const sfpDiag = DATA.sfp_diagnostics || {{}};
   const sfpThresh = DATA.sfp_thresholds || {{}};
 
+  const {{ dataPorts }} = getPortLists();
   let cards = '';
-  for (let i = 1; i <= 4; i++) {{
+  for (const si of dataPorts) {{
-    const si = String(i);
     const info = sfpInfo[si];
     const diag = sfpDiag[si] || {{}};
     const thresh = sfpThresh[si] || {{}};
     const conn = connectors[si] || {{}};
 
-    if (!info || info.present !== '1') {{
+    if (!info || !isTrue(info.present)) {{
-      cards += `<div class="sfp-detail" id="sfp-detail-${{i}}">
+      cards += `<div class="sfp-detail" id="sfp-detail-${{si}}">
         <div class="card-dark" style="border-left:3px solid #555">
           <div class="card-body" style="text-align:center;color:#555;padding:2rem">
             <i class="bi bi-slash-circle" style="font-size:2rem"></i>
-            <div>SFP-${{i}} &mdash; Not Present</div>
+            <div>${{esc(conn.name || 'Port ' + si)}} &mdash; Not Present</div>
           </div>
         </div>
       </div>`;
       continue;
     }}
 
-    const ddm = info.diagCapable === '1';
+    const ddm = isTrue(info.diagCapable);
     const ddmBadge = ddm
       ? '<span class="badge bg-success">DDM Supported</span>'
       : '<span class="badge bg-secondary">DDM Not Supported</span>';
@@ -1249,10 +1385,10 @@ function renderSfp() {{
     const wl = info.wavelength && info.wavelength !== '0' ? info.wavelength + ' nm' : 'N/A (copper)';
     const mfgDate = [info.mfgYear, String(info.mfgMonth||'').padStart(2,'0'), String(info.mfgDay||'').padStart(2,'0')].join('-');
 
-    cards += `<div class="sfp-detail ${{i===1?'active':''}}" id="sfp-detail-${{i}}">
+    cards += `<div class="sfp-detail ${{si===dataPorts[0]?'active':''}}" id="sfp-detail-${{si}}">
       <div class="card-dark" style="border-left:3px solid var(--accent)">
         <div class="card-header">
-          <i class="bi bi-lightning-charge"></i> SFP-${{i}}: ${{esc(info.vendor)}} ${{esc(info.vendorPn)}}
+          <i class="bi bi-lightning-charge"></i> ${{esc(conn.name || 'Port ' + si)}}: ${{esc(info.vendor)}} ${{esc(info.vendorPn)}}
           <span class="ms-auto">${{ddmBadge}}</span>
         </div>
         <div class="card-body">
@@ -1272,8 +1408,8 @@ function renderSfp() {{
               <h6 style="font-size:0.8rem;color:var(--text-muted)">CAPABILITIES</h6>
               <div style="font-size:0.82rem">
                 <div>DDM Capable: <strong>${{ddm ? 'Yes' : 'No'}}</strong></div>
-                <div>Internal Cal: <strong>${{info.internalCal==='1' ? 'Yes' : 'No'}}</strong></div>
+                <div>Internal Cal: <strong>${{isTrue(info.internalCal) ? 'Yes' : 'No'}}</strong></div>
-                <div>Alarm Capable: <strong>${{info.alarmCapable==='1' ? 'Yes' : 'No'}}</strong></div>
+                <div>Alarm Capable: <strong>${{isTrue(info.alarmCapable) ? 'Yes' : 'No'}}</strong></div>
                 <div>SFF-8472 Rev: <strong>${{esc(info.rev8472)}}</strong></div>
                 <div>ID Type: <strong>${{esc(info.idType)}}</strong></div>
                 <div>Ext ID: <strong>${{esc(info.extIdType)}}</strong></div>
@@ -1293,7 +1429,7 @@ function renderSfp() {{
       <div class="card-body">
         <div style="font-size:0.78rem;color:var(--text-muted);margin-bottom:0.5rem">
           Click an SFP slot in the front panel above, or select below:
-          ${{[1,2,3,4].map(i => `<button class="btn btn-sm btn-outline-secondary ms-1" onclick="selectSfp(${{i}})">SFP-${{i}}</button>`).join('')}}
+          ${{dataPorts.map(k => `<button class="btn btn-sm btn-outline-secondary ms-1" onclick="selectSfp(${{k}})">${{esc((connectors[k]||{{}}).name || 'Port '+k)}}</button>`).join('')}}
         </div>
         ${{cards}}
       </div>
@@ -1314,7 +1450,7 @@ function renderAlarms() {{
   // Collect active alarms (when status table available)
   const active = [];
   for (const [k,a] of Object.entries(alarmStatus)) {{
-    if (a.active === '1') {{
+    if (isTrue(a.active)) {{
       const cfg = cfgByNum[a.number] || {{}};
       active.push({{ ...a, ...cfg, _statusId: k }});
     }}
@@ -1356,7 +1492,7 @@ function renderAlarms() {{
         <td>${{esc(c.description)}}</td>`;
       if (hasSeverity) rows += `
         <td><span class="badge ${{sevClass(c.severity)}}">${{sevLabel(c.severity)}}</span></td>
-        <td>${{c.enabled === '1' ? '<span style="color:var(--green)">Yes</span>' : '<span style="color:var(--text-muted)">No</span>'}}</td>`;
+        <td>${{isTrue(c.enabled) ? '<span style="color:var(--green)">Yes</span>' : '<span style="color:var(--text-muted)">No</span>'}}</td>`;
       if (hasCondition) rows += `
         <td class="mono">${{esc(c.conditionType)}}</td>
         <td class="mono">${{esc(c.amoType)}}</td>`;
@@ -1503,12 +1639,12 @@ function renderFilters() {{
   let rows = '';
   for (const [id, f] of Object.entries(filters)) {{
     const conditions = [];
-    if (f.macDstEn === '1') conditions.push('MAC Dst: ' + esc(f.macDst));
+    if (isTrue(f.macDstEn)) conditions.push('MAC Dst: ' + esc(f.macDst));
-    if (f.macSrcEn === '1') conditions.push('MAC Src: ' + esc(f.macSrc));
+    if (isTrue(f.macSrcEn)) conditions.push('MAC Src: ' + esc(f.macSrc));
-    if (f.etypeEn === '1') conditions.push('EType: ' + esc(f.etype));
+    if (isTrue(f.etypeEn)) conditions.push('EType: ' + esc(f.etype));
-    if (f.vlan1IdEn === '1') conditions.push('VLAN1: ' + esc(f.vlan1Id));
+    if (isTrue(f.vlan1IdEn)) conditions.push('VLAN1: ' + esc(f.vlan1Id));
-    if (f.vlan2IdEn === '1') conditions.push('VLAN2: ' + esc(f.vlan2Id));
+    if (isTrue(f.vlan2IdEn)) conditions.push('VLAN2: ' + esc(f.vlan2Id));
-    if (f.vlan1PriorEn === '1') conditions.push('PCP1: ' + esc(f.vlan1Prior));
+    if (isTrue(f.vlan1PriorEn)) conditions.push('PCP1: ' + esc(f.vlan1Prior));
     const condStr = conditions.length ? conditions.join(', ') : '<span class="status-na">any (catchall)</span>';
 
     rows += `<tr>
@@ -1652,7 +1788,6 @@ 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 || {{}};
@@ -1664,14 +1799,13 @@ 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';
     const iface = ifaces[portIdx];
     if (isSfp) {{
       const sfp = sfpInfo[portIdx];
-      const present = sfp && sfp.present === '1';
+      const present = sfp && isTrue(sfp.present);
       if (!present) return 'empty';
       if (iface && isUp(iface.ifOperStatus)) return 'present-link';
       return 'present-nolink';
@@ -1682,137 +1816,99 @@ function renderLldp() {{
     }}
   }}
 
-  // Build a row for each network port (1-4)
+  function buildNeighborCard(nbr, cssClass) {{
-  let rowsHtml = '';
+    const platform = parseRemotePlatform(nbr.remSysDesc, nbr.remSysName);
-  for (let i = 1; i <= 4; i++) {{
+    const shortName = (nbr.remSysName || '').split('.')[0] || 'Unknown';
-    const portKey = String(i);
+    const modelLine = platform.vendor ? `${{platform.vendor}} ${{platform.model}}` : platform.model;
+    return `<div class="${{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>` : ''}}
+      <div class="remote-detail"><span class="rlabel">Port</span> ${{esc(nbr.remPortId || '?')}}</div>
+      ${{nbr.remPortDesc ? `<div class="remote-detail"><span class="rlabel">Desc</span> ${{esc(nbr.remPortDesc)}}</div>` : ''}}
+      <div class="remote-detail"><span class="rlabel">MAC</span> ${{esc(nbr.chassisId || '?')}}</div>
+      ${{nbr.mgmtIPv4 ? `<div class="remote-mgmt"><i class="bi bi-globe2"></i> ${{esc(nbr.mgmtIPv4)}}</div>` : ''}}
+      ${{nbr.mgmtIPv6 ? `<div class="remote-detail"><span class="rlabel">IPv6</span> <span style="font-size:0.65rem">${{esc(nbr.mgmtIPv6)}}</span></div>` : ''}}
+      <div class="remote-detail" style="margin-top:0.2rem">
+        <span class="rlabel">Caps</span>
+        ${{nbr.capsEnabled === '2' ? '<span style="color:var(--amber)">Bridge</span>' :
+          nbr.capsEnabled === '4' ? '<span style="color:var(--cyan)">Router</span>' :
+          'Cap=' + (nbr.capsEnabled||'?')}}
+      </div>
+    </div>`;
+  }}
+
+  // Build vertical columns for data ports
+  const {{ dataPorts, mgmtPort }} = getPortLists();
+  let colsHtml = '';
+  for (const portKey of dataPorts) {{
     const conn = connectors[portKey] || {{}};
     const isSfp = conn.type === '14';
     const nbr = neighborByPort[portKey];
     const state = slotState(portKey);
     const iface = ifaces[portKey] || {{}};
     const localUp = isUp(iface.ifOperStatus);
-    const slotName = conn.name || (isSfp ? `SFP-${{i}}` : `RJ45-${{i}}`);
+    const slotName = conn.name || (isSfp ? `SFP-${{portKey}}` : `RJ45-${{portKey}}`);
     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 ' + portKey;
 
     if (nbr) {{
-      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';
-
+      colsHtml += `
-      rowsHtml += `
+        <div class="lldp-col">
-        <div class="lldp-row">
+          <div class="lldp-col-header ${{state}}">
-          <div class="lldp-local-slot ${{state}}">
             ${{icon}}<span class="slot-label">${{esc(slotName)}}</span>
           </div>
-          <div class="lldp-connector">
+          <div class="lldp-col-port-label">${{esc(portLabel)}}</div>
-            <div class="link-port-label">${{esc(iface.ifName || nbr.localPortName || 'Port ' + i)}}</div>
+          <div class="lldp-col-line ${{linkClass}}"></div>
-            <div class="link-line ${{linkClass}}"></div>
+          <div class="lldp-col-port-label">${{esc(nbr.remPortId || '?')}}</div>
-            <div class="link-port-label">${{esc(nbr.remPortId || '?')}}</div>
+          ${{buildNeighborCard(nbr, 'lldp-col-remote')}}
-          </div>
-          <div class="lldp-remote">
-            <div class="remote-hostname">${{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>` : ''}}
-            <div class="remote-detail"><span class="rlabel">Port</span> ${{esc(nbr.remPortId || '?')}}</div>
-            ${{nbr.remPortDesc ? `<div class="remote-detail"><span class="rlabel">Desc</span> ${{esc(nbr.remPortDesc)}}</div>` : ''}}
-            <div class="remote-detail"><span class="rlabel">MAC</span> ${{esc(nbr.chassisId || '?')}}</div>
-            ${{nbr.mgmtIPv4 ? `<div class="remote-mgmt"><i class="bi bi-globe2"></i> ${{esc(nbr.mgmtIPv4)}}</div>` : ''}}
-            ${{nbr.mgmtIPv6 ? `<div class="remote-detail"><span class="rlabel">IPv6</span> <span style="font-size:0.65rem">${{esc(nbr.mgmtIPv6)}}</span></div>` : ''}}
-            <div class="remote-detail" style="margin-top:0.2rem">
-              <span class="rlabel">Caps</span>
-              ${{nbr.capsEnabled === '2' ? '<span style="color:var(--amber)">Bridge</span>' :
-                nbr.capsEnabled === '4' ? '<span style="color:var(--cyan)">Router</span>' :
-                'Cap=' + (nbr.capsEnabled||'?')}}
-            </div>
-          </div>
         </div>`;
     }} else {{
-      rowsHtml += `
+      colsHtml += `
-        <div class="lldp-row idle">
+        <div class="lldp-col idle">
-          <div class="lldp-local-slot ${{state}}">
+          <div class="lldp-col-header ${{state}}">
             ${{icon}}<span class="slot-label">${{esc(slotName)}}</span>
           </div>
-          <div class="lldp-connector">
+          <div class="lldp-col-port-label">${{esc(portLabel)}}</div>
-            <div class="link-line" style="background:#2d3340;height:2px;opacity:0.5"></div>
+          <div class="lldp-col-line idle"></div>
-          </div>
+          <div class="lldp-col-idle-label">No LLDP neighbor</div>
-          <div class="lldp-idle-label">No LLDP neighbor</div>
         </div>`;
     }}
   }}
 
-  // Include MGMT port if it has a neighbor
+  // MGMT column
-  const mgmtNbr = neighborByPort['5'];
+  const mgmtNbr = mgmtPort ? neighborByPort[mgmtPort] : null;
   if (mgmtNbr) {{
-    const mgmtIface = ifaces['5'] || {{}};
+    const mgmtIface = ifaces[mgmtPort] || {{}};
     const mgmtUp = isUp(mgmtIface.ifOperStatus);
-    const platform = parseRemotePlatform(mgmtNbr.remSysDesc, mgmtNbr.remSysName);
+    colsHtml += `<div class="lldp-col-divider"></div>`;
-    const shortName = (mgmtNbr.remSysName || '').split('.')[0] || 'Unknown';
+    colsHtml += `
-    const modelLine = platform.vendor ? `${{platform.vendor}} ${{platform.model}}` : platform.model;
+      <div class="lldp-col">
-    rowsHtml += `
+        <div class="lldp-col-header ${{mgmtUp ? 'present-link' : 'present-nolink'}}">
-      <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">
           <i class="bi bi-ethernet"></i><span class="slot-label">MGMT</span>
         </div>
-        <div class="lldp-connector">
+        <div class="lldp-col-port-label">Management</div>
-          <div class="link-port-label">Management</div>
+        <div class="lldp-col-line ${{mgmtUp ? 'up' : 'down'}}"></div>
-          <div class="link-line ${{mgmtUp ? 'up' : 'down'}}"></div>
+        <div class="lldp-col-port-label">${{esc(mgmtNbr.remPortId || '?')}}</div>
-          <div class="link-port-label">${{esc(mgmtNbr.remPortId || '?')}}</div>
+        ${{buildNeighborCard(mgmtNbr, 'lldp-col-remote')}}
-        </div>
-        <div class="lldp-remote">
-          <div class="remote-hostname">${{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>`;
   }}
 
-  // 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">
-        </div>
+            ${{colsHtml}}
-        ${{Object.keys(stats).length ? `
-          <div style="margin-top:1rem">
-            <h6 style="font-size:0.8rem;color:var(--text-muted);margin-bottom:0.5rem">
-              <i class="bi bi-bar-chart"></i> Per-Port LLDP Statistics
-            </h6>
-            <table class="topo-stats-table">
-              <thead><tr>
-                <th>Port</th><th>Interface</th><th style="text-align:right">TX Frames</th>
-                <th style="text-align:right">RX Frames</th><th style="text-align:center">Neighbors</th>
-              </tr></thead>
-              <tbody>${{statsRows}}</tbody>
-            </table>
           </div>
-        ` : ''}}
+        </div>
       </div>
     </div>`;
 }}
@@ -1912,7 +2008,7 @@ function renderCoverage() {{
   // Check SFP DDM
   const sfpInfo = DATA.sfp_info || {{}};
   for (const [k,s] of Object.entries(sfpInfo)) {{
-    if (s.present === '1' && s.diagCapable !== '1') {{
+    if (isTrue(s.present) && !isTrue(s.diagCapable)) {{
       gaps.push({{
         type: 'red',
         text: `SFP-${{k}} DDM: Not available via SNMP (diagCapable=false). NID web UI reads SFP I2C bus directly.`
@@ -2031,6 +2127,7 @@ function renderPortCmp() {{
 // ── Render all sections ──────────────────────────────
 renderWalkControl();
 renderHeader();
+renderMap();
 renderPanel();
 renderLldp();
 renderInterfaces();

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})
 

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//./-}"