Inspect ACL rule numbers, match counts, attachment direction and permitted/denied test flows. This check would diagnose ACL packet filter rule order and direction, but would not first isolate the described Prefix-list network and mask matching. Begin with: Inspect ip-prefix sequence, mask-length qualifiers and test candidate routes.

Inspect route communities on received paths and the community-filter and route-policy match results. This check would diagnose BGP community filtering in routing control, but would not first isolate the described Prefix-list network and mask matching. Begin with: Inspect ip-prefix sequence, mask-length qualifiers and test candidate routes.

Inspect port roles, proposal/agreement exchanges, physical link state and failover logs. This check would diagnose RSTP alternate port failover, but would not first isolate the described Prefix-list network and mask matching. Begin with: Inspect ip-prefix sequence, mask-length qualifiers and test candidate routes.

Apply a reviewed community-filter match in the relevant import or export route-policy. This is a legitimate response to the different issue of BGP community filtering in routing control, but it does not correct the specific Route-policy permit and deny node order condition reported. The relevant technical distinction is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

Configure the correct supported DHCP relay destination on the client-facing L3 interface. This is a legitimate response to the different issue of DHCP relay to remote server, but it does not correct the specific Route-policy permit and deny node order condition reported. The relevant technical distinction is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

Enforce the authorized DSCP trust boundary and remark or queue approved traffic appropriately. This is a legitimate response to the different issue of QoS DSCP remarking and trust, but it does not correct the specific Route-policy permit and deny node order condition reported. The relevant technical distinction is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

All regional peers report a matching MST region configuration and each VLAN follows its intended instance tree. That observation would support a separate case of MSTP VLAN-to-instance mapping, not verification of the reported Route-policy permit and deny node order. The relevant observable outcome here is: A test prohibited prefix is rejected while authorized matching routes retain expected attributes.

The restricted destination is denied and authorized comparison traffic succeeds in a controlled test. That observation would support a separate case of ACL packet filter rule order and direction, not verification of the reported Route-policy permit and deny node order. The relevant observable outcome here is: A test prohibited prefix is rejected while authorized matching routes retain expected attributes.

A member failover preserves approved forwarding and the CSS reports healthy single-system state. That observation would support a separate case of CSS chassis clustering and failover, not verification of the reported Route-policy permit and deny node order. The relevant observable outcome here is: A test prohibited prefix is rejected while authorized matching routes retain expected attributes.

Prefix lists match both an address prefix and a configurable prefix-length range. This explains Prefix-list network and mask matching, but not why the issue in this scenario occurs. The specific mechanism is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

BFD detects forwarding failures rapidly and can notify upper-layer routing protocols or route tracking. This explains BFD fast failure detection tied to route, but not why the issue in this scenario occurs. The specific mechanism is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

Packet filtering depends on first relevant ACL matches and the direction of filter application. This explains ACL packet filter rule order and direction, but not why the issue in this scenario occurs. The specific mechanism is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

An accidental boundary can change port roles and send traffic over unintended links. This consequence is associated more directly with MSTP region mismatch on trunks. For the stated conditions the immediate exposure is: Misordered nodes can create routing leaks that an apparently correct later deny cannot stop.

Untrusted DSCP markings can let ordinary traffic consume scarce high-priority capacity. This consequence is associated more directly with QoS DSCP remarking and trust. For the stated conditions the immediate exposure is: Misordered nodes can create routing leaks that an apparently correct later deny cannot stop.

Uncontrolled reimport can create persistent false reachability after a primary path fails. This consequence is associated more directly with Redistribution route tag loop avoidance. For the stated conditions the immediate exposure is: Misordered nodes can create routing leaks that an apparently correct later deny cannot stop.

Inspect peer addresses, source interfaces, loopback routes and TCP endpoint addresses. This check would diagnose Loopback-based iBGP update source, but would not first isolate the described Route-policy permit and deny node order. Begin with: Inspect route-policy node IDs, if-match criteria, apply clauses and hit counts.

Inspect the Huawei IP routing table, FIB entries, adjacency resolution and a test flow. This check would diagnose RIB-to-FIB forwarding discrepancy, but would not first isolate the described Route-policy permit and deny node order. Begin with: Inspect route-policy node IDs, if-match criteria, apply clauses and hit counts.

Inspect ACL rule numbers, match counts, attachment direction and permitted/denied test flows. This check would diagnose ACL packet filter rule order and direction, but would not first isolate the described Route-policy permit and deny node order. Begin with: Inspect route-policy node IDs, if-match criteria, apply clauses and hit counts.

Restore an appropriate contiguous Level-2 IS-IS inter-area backbone path and verify level participation. This is a legitimate response to the different issue of IS-IS level-2 backbone continuity, but it does not correct the specific Route-policy permit and deny node order condition reported. The relevant technical distinction is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

Set the Huawei ip ip-prefix network and greater-equal/less-equal bounds to the precise permitted prefixes. This is a legitimate response to the different issue of Prefix-list network and mask matching, but it does not correct the specific Route-policy permit and deny node order condition reported. The relevant technical distinction is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

Apply supported route-policy attributes only to the documented matched prefixes and validate next-hop resolution. This is a legitimate response to the different issue of Route-policy next-hop and preference application, but it does not correct the specific Route-policy permit and deny node order condition reported. The relevant technical distinction is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

The peer sees the approved aggregate and every allocated component remains reachable under tested failures. That observation would support a separate case of BGP prefix aggregation and specifics, not verification of the reported Route-policy permit and deny node order. The relevant observable outcome here is: A test prohibited prefix is rejected while authorized matching routes retain expected attributes.

Affected prefixes select the planned reachable next hop with correct preference while unrelated paths remain stable. That observation would support a separate case of Route-policy next-hop and preference application, not verification of the reported Route-policy permit and deny node order. The relevant observable outcome here is: A test prohibited prefix is rejected while authorized matching routes retain expected attributes.

Every prefix has a stable authoritative origin and route import does not recursively reappear. That observation would support a separate case of Redistribution route tag loop avoidance, not verification of the reported Route-policy permit and deny node order. The relevant observable outcome here is: A test prohibited prefix is rejected while authorized matching routes retain expected attributes.

VRFs provide separate routing and forwarding tables for traffic isolation on shared infrastructure. This explains VRF route isolation, but not why the issue in this scenario occurs. The specific mechanism is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

Prefix lists match both an address prefix and a configurable prefix-length range. This explains Prefix-list network and mask matching, but not why the issue in this scenario occurs. The specific mechanism is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

MP-BGP carries address-family-specific routes only when corresponding capabilities and peers are configured. This explains MP-BGP address-family activation, but not why the issue in this scenario occurs. The specific mechanism is: Ordered route-policy matching stops at an applicable node and its permit or deny behavior.

Repeated import can advertise stale paths and blackhole services after topology changes. This consequence is associated more directly with Route import feedback loop. For the stated conditions the immediate exposure is: Misordered nodes can create routing leaks that an apparently correct later deny cannot stop.

Confusing route types can leave inter-subnet overlay connectivity missing or misconfigured. This consequence is associated more directly with EVPN Type-2 MAC/IP route interpretation. For the stated conditions the immediate exposure is: Misordered nodes can create routing leaks that an apparently correct later deny cannot stop.

Untrusted DSCP markings can let ordinary traffic consume scarce high-priority capacity. This consequence is associated more directly with QoS DSCP remarking and trust. For the stated conditions the immediate exposure is: Misordered nodes can create routing leaks that an apparently correct later deny cannot stop.

Inspect matching rule, applied attributes, selected route and resolved FIB next hop. This check would diagnose Route-policy next-hop and preference application, but would not first isolate the described Route-policy permit and deny node order. Begin with: Inspect route-policy node IDs, if-match criteria, apply clauses and hit counts.

Inspect peer addresses, source interfaces, loopback routes and TCP endpoint addresses. This check would diagnose Loopback-based iBGP update source, but would not first isolate the described Route-policy permit and deny node order. Begin with: Inspect route-policy node IDs, if-match criteria, apply clauses and hit counts.

Check VRRP preempt state and delay, recovered link stability and transition timestamps. This check would diagnose VRRP preemption maintenance behavior, but would not first isolate the described Route-policy permit and deny node order. Begin with: Inspect route-policy node IDs, if-match criteria, apply clauses and hit counts.