diff --git a/netx_api/biz_state/compare_engine.py b/netx_api/biz_state/compare_engine.py
index 3249beb..8bf7ca5 100644
--- a/netx_api/biz_state/compare_engine.py
+++ b/netx_api/biz_state/compare_engine.py
@@ -75,10 +75,21 @@ def compare_rows(
     """Return summary + diffs list.
 
     Diff kinds: added | removed | changed | unchanged
+
+    Empty ``port_map`` means ignore port/iface changes: matching keys exclude
+    ``iface_fields`` (same-device batches compare without a rename map).
     """
     if not key_fields:
         raise ValueError("key_fields required")
     pmap = dict(port_map or {})
+    iface_set = {str(f) for f in (iface_fields or []) if str(f).strip()}
+    # No map → ignore port renames: drop iface columns from the match key.
+    if not pmap and iface_set:
+        match_keys = [k for k in key_fields if k not in iface_set]
+        if not match_keys:
+            match_keys = list(key_fields)
+    else:
+        match_keys = list(key_fields)
 
     before_mapped: list[dict[str, Any]] = [
         apply_port_map(r, iface_fields=iface_fields, port_map=pmap) for r in before_rows
@@ -86,14 +97,17 @@ def compare_rows(
 
     after_index: dict[tuple[str, ...], dict[str, Any]] = {}
     for r in after_rows:
-        after_index[row_key(r, key_fields)] = r
+        after_index[row_key(r, match_keys)] = r
 
     before_keys: set[tuple[str, ...]] = set()
     diffs: list[dict[str, Any]] = []
     added = removed = changed = unchanged = 0
 
+    def _key_obj(row: dict[str, Any]) -> dict[str, Any]:
+        return {f: row.get(f, "") for f in key_fields}
+
     for orig, mapped in zip(before_rows, before_mapped):
-        k = row_key(mapped, key_fields)
+        k = row_key(mapped, match_keys)
         before_keys.add(k)
         after = after_index.get(k)
         if after is None:
@@ -101,7 +115,7 @@ def compare_rows(
             diffs.append(
                 {
                     "kind": "removed",
-                    "key": {f: mapped.get(f, "") for f in key_fields},
+                    "key": _key_obj(mapped),
                     "before": orig,
                     "after": None,
                     "mapped_before": mapped,
@@ -123,7 +137,7 @@ def compare_rows(
             diffs.append(
                 {
                     "kind": "changed",
-                    "key": {f: mapped.get(f, "") for f in key_fields},
+                    "key": _key_obj(mapped),
                     "before": orig,
                     "after": after,
                     "mapped_before": mapped,
@@ -132,6 +146,16 @@ def compare_rows(
             )
         else:
             unchanged += 1
+            diffs.append(
+                {
+                    "kind": "unchanged",
+                    "key": _key_obj(mapped),
+                    "before": orig,
+                    "after": after,
+                    "mapped_before": mapped,
+                    "changes": {},
+                }
+            )
 
     for k, after in after_index.items():
         if k in before_keys:
@@ -140,7 +164,7 @@ def compare_rows(
         diffs.append(
             {
                 "kind": "added",
-                "key": {f: after.get(f, "") for f in key_fields},
+                "key": _key_obj(after),
                 "before": None,
                 "after": after,
                 "mapped_before": None,
@@ -154,6 +178,8 @@ def compare_rows(
         iface_fields=iface_fields,
         port_map=pmap,
     )
+    if not pmap:
+        stats = {**stats, "ok": True, "ignore_port_changes": True}
     return {
         "summary": {
             "before_count": len(before_rows),
@@ -162,6 +188,7 @@ def compare_rows(
             "removed": removed,
             "changed": changed,
             "unchanged": unchanged,
+            "match_key_fields": match_keys,
         },
         "diffs": diffs,
         "mapping_stats": stats,
diff --git a/tests/test_biz_state_compare.py b/tests/test_biz_state_compare.py
index 58be5a4..92e9750 100644
--- a/tests/test_biz_state_compare.py
+++ b/tests/test_biz_state_compare.py
@@ -85,6 +85,44 @@ class CompareEngineTests(unittest.TestCase):
         self.assertEqual(s["unchanged"], 1)
         self.assertEqual(s["removed"], 1)
         self.assertEqual(s["added"], 1)
+        kinds = {d["kind"] for d in out["diffs"]}
+        self.assertIn("unchanged", kinds)
+
+    def test_empty_port_map_ignores_iface_in_key(self) -> None:
+        """No port map → ignore local_if when matching (same neighbor, renamed port)."""
+        before = [
+            {"local_if": "old-1", "remote_sys": "Peer", "remote_if": "p1", "remote_ip": "1.1.1.1"},
+        ]
+        after = [
+            {"local_if": "new-1", "remote_sys": "Peer", "remote_if": "p1", "remote_ip": "1.1.1.1"},
+        ]
+        out = compare_rows(
+            before_rows=before,
+            after_rows=after,
+            key_fields=["local_if", "remote_sys", "remote_if"],
+            iface_fields=["local_if"],
+            compare_fields=["remote_ip"],
+            port_map={},
+        )
+        self.assertEqual(out["summary"]["unchanged"], 1)
+        self.assertEqual(out["summary"]["added"], 0)
+        self.assertEqual(out["summary"]["removed"], 0)
+        self.assertTrue(out["mapping_stats"].get("ignore_port_changes"))
+
+    def test_unchanged_rows_are_listed(self) -> None:
+        before = [{"local_if": "a", "remote_sys": "X", "remote_if": "1", "remote_ip": "1"}]
+        after = [{"local_if": "a", "remote_sys": "X", "remote_if": "1", "remote_ip": "1"}]
+        out = compare_rows(
+            before_rows=before,
+            after_rows=after,
+            key_fields=["local_if", "remote_sys", "remote_if"],
+            iface_fields=["local_if"],
+            compare_fields=["remote_ip"],
+            port_map={},
+        )
+        self.assertEqual(out["summary"]["unchanged"], 1)
+        self.assertEqual(len(out["diffs"]), 1)
+        self.assertEqual(out["diffs"][0]["kind"], "unchanged")
 
 
 if __name__ == "__main__":
diff --git a/web/src/i18n/en.ts b/web/src/i18n/en.ts
index 762b601..2d133c4 100644
--- a/web/src/i18n/en.ts
+++ b/web/src/i18n/en.ts
@@ -191,6 +191,11 @@ const en = {
     paused: "Paused",
     collecting: "Collecting",
     detail: "Details",
+    interval: "Interval (sec)",
+    retention: "Keep batches",
+    saveSchedule: "Save schedule",
+    scheduleSaved: "Schedule saved",
+    colInterval: "Interval",
     profiles: "Monitor items",
     enable: "On",
     command: "Command template",
@@ -260,14 +265,16 @@ const en = {
     presenceShort: "presence",
     modeFields: "Mode: compare selected field values",
     modePresence: "Mode: presence-only (entry set match)",
-    mapping: "Port mapping",
+    mapping: "Port mapping (optional)",
     newMapping: "New mapping…",
     mapName: "Mapping name",
     saveMapping: "Save mapping",
     validateMapping: "Validate",
     validateNeed: "Select mapping and before/after batches first",
-    mapHint: "before_if,after_if one pair per line",
+    mapHint:
+      "Optional. Leave empty to ignore port renames (match on non-interface keys). Or one before_if,after_if pair per line",
     mappingSaved: "Mapping saved",
+    mappingOptionalHint: "No port map: ignore local port changes; match on non-interface keys.",
     createJob: "Create compare job",
     defaultJobName: "Cutover compare",
     jobName: "Name",
diff --git a/web/src/i18n/zh.ts b/web/src/i18n/zh.ts
index 02f4449..d140b7b 100644
--- a/web/src/i18n/zh.ts
+++ b/web/src/i18n/zh.ts
@@ -191,6 +191,11 @@ const zh = {
     paused: "已暂停",
     collecting: "采集中",
     detail: "详情",
+    interval: "采集周期（秒）",
+    retention: "保留批次数",
+    saveSchedule: "保存周期",
+    scheduleSaved: "周期配置已保存",
+    colInterval: "周期",
     profiles: "监控项",
     enable: "启用",
     command: "命令模板",
@@ -260,14 +265,15 @@ const zh = {
     presenceShort: "仅条目",
     modeFields: "模式：按比对字段检查值",
     modePresence: "模式：仅校验前后条目一致（不比具体值）",
-    mapping: "端口映射",
+    mapping: "端口映射（可选）",
     newMapping: "新建映射…",
     mapName: "映射名称",
     saveMapping: "保存映射",
     validateMapping: "校验映射",
     validateNeed: "请先选择映射与前后批次",
-    mapHint: "before_if,after_if 每行一对",
+    mapHint: "可选。不填表示忽略端口变化（同设备比对按非接口 Key 对齐）。填写时每行 before_if,after_if",
     mappingSaved: "映射已保存",
+    mappingOptionalHint: "未填端口映射：忽略本端端口变化，仅按邻居等非接口 Key 对齐。",
     createJob: "建立比对任务",
     defaultJobName: "割接比对",
     jobName: "名称",
diff --git a/web/src/pages/network/BizComparePage.tsx b/web/src/pages/network/BizComparePage.tsx
index 2f9f41f..4691d6b 100644
--- a/web/src/pages/network/BizComparePage.tsx
+++ b/web/src/pages/network/BizComparePage.tsx
@@ -747,6 +747,7 @@ export function BizComparePage() {
       {!compact ? (
         <div className="bs-cmp-mapping">
           <h4 style={{ margin: "8px 0" }}>{t("bizCompare.mapping")}</h4>
+          <p className="muted">{t("bizCompare.mappingOptionalHint")}</p>
           <div className="filter-inline" style={{ marginBottom: 8 }}>
             <FieldSelect
               value={mappingId}
diff --git a/web/src/pages/network/BizStatePage.tsx b/web/src/pages/network/BizStatePage.tsx
index b8a61ec..fce7c7d 100644
--- a/web/src/pages/network/BizStatePage.tsx
+++ b/web/src/pages/network/BizStatePage.tsx
@@ -37,6 +37,7 @@ type TaskRow = {
   collect_running: boolean;
   last_error: string;
   last_collect_ended_at?: string | null;
+  interval_sec?: number;
 };
 
 type Placeholder = { name: string };
@@ -183,6 +184,8 @@ export function BizStatePage() {
   const [profiles, setProfiles] = useState<Profile[]>([]);
   const [batches, setBatches] = useState<BatchRow[]>([]);
   const [taskTab, setTaskTab] = useState<TaskTab>("profiles");
+  const [intervalSec, setIntervalSec] = useState(300);
+  const [retentionBatches, setRetentionBatches] = useState(30);
 
   // VRF bind (inside task modal)
   const [bindItemId, setBindItemId] = useState("");
@@ -292,6 +295,8 @@ export function BizStatePage() {
   const loadTask = async (id: string) => {
     const task = await bizStateGetTask(id);
     setDetail(task);
+    setIntervalSec(Math.max(60, Number(task.interval_sec || 300)));
+    setRetentionBatches(Math.max(1, Number(task.retention_batches || 30)));
     const b = await bizStateListBatches(id);
     setBatches((b.items || []) as BatchRow[]);
     const p = await bizStateListProfiles({
@@ -361,6 +366,24 @@ export function BizStatePage() {
     }
   };
 
+  const saveSchedule = async () => {
+    if (!taskId) return;
+    setBusy(true);
+    try {
+      await bizStatePatchTask(taskId, {
+        interval_sec: Math.max(60, Number(intervalSec) || 300),
+        retention_batches: Math.max(1, Number(retentionBatches) || 30),
+      });
+      showOk(t("bizState.scheduleSaved"));
+      await loadTask(taskId);
+      await refreshTasks();
+    } catch (e) {
+      showError(formatErr(e));
+    } finally {
+      setBusy(false);
+    }
+  };
+
   const collectNow = async () => {
     if (!taskId) return;
     setBusy(true);
@@ -543,6 +566,7 @@ export function BizStatePage() {
               <tr>
                 <th>{t("bizState.colNe")}</th>
                 <th>{t("bizState.colSource")}</th>
+                <th>{t("bizState.colInterval")}</th>
                 <th>{t("bizState.colStatus")}</th>
                 <th>{t("bizState.colLast")}</th>
                 <th>{t("bizState.colActions")}</th>
@@ -563,6 +587,7 @@ export function BizStatePage() {
                       {row.source || "managed"}
                     </NmStatusChip>
                   </td>
+                  <td className="pt-list-num">{row.interval_sec ?? 300}s</td>
                   <td>
                     <div className="pt-list-actions" style={{ flexWrap: "wrap", gap: 4 }}>
                       <NmStatusChip color={jobChipColor(row.status)}>{row.status}</NmStatusChip>
@@ -633,13 +658,13 @@ export function BizStatePage() {
                   </td>
                 </tr>
               ))}
-              {!filteredTasks.length ? (
-                <tr>
-                  <td colSpan={5}>
-                    <div className="pt-list-empty">{t("bizState.empty")}</div>
-                  </td>
-                </tr>
-              ) : null}
+                {!filteredTasks.length ? (
+                  <tr>
+                    <td colSpan={6}>
+                      <div className="pt-list-empty">{t("bizState.empty")}</div>
+                    </td>
+                  </tr>
+                ) : null}
             </tbody>
           </table>
         </div>
@@ -767,9 +792,34 @@ export function BizStatePage() {
         </Modal.Header>
         <Modal.Body className="flex flex-col gap-3">
           {detail ? (
-            <p className="muted">
-              {detail.vendor || "—"} · {detail.ne_ip || "—"} · interval {detail.interval_sec}s
-            </p>
+            <div className="config-sync-policy-row bs-schedule-row">
+              <label className="config-sync-policy-field">
+                <span>{t("bizState.interval")}</span>
+                <Input
+                  type="number"
+                  min={60}
+                  max={86400}
+                  value={String(intervalSec)}
+                  onChange={(e) => setIntervalSec(Math.max(60, Number(e.target.value) || 60))}
+                />
+              </label>
+              <label className="config-sync-policy-field">
+                <span>{t("bizState.retention")}</span>
+                <Input
+                  type="number"
+                  min={1}
+                  max={200}
+                  value={String(retentionBatches)}
+                  onChange={(e) => setRetentionBatches(Math.max(1, Number(e.target.value) || 1))}
+                />
+              </label>
+              <Button size="sm" variant="secondary" isDisabled={busy} onPress={() => void saveSchedule()}>
+                {t("bizState.saveSchedule")}
+              </Button>
+              <span className="muted">
+                {detail.vendor || "—"} · {detail.ne_ip || "—"}
+              </span>
+            </div>
           ) : null}
           {detail?.last_error ? <p className="form-error">{detail.last_error}</p> : null}