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The proposed control is tied to the customer interface or routing family is associated with the wrong routing instance, typically observed when iPv6 routes leak into the global IPv6 table instead of the tenant's inet6 VRF. Here the target is the inter-as per-vrf ebgp exchange is missing a route export or prefix permission; monitor the authorized VPN subnet is learned across the AS boundary without tenant mixing.

It is valid for another service scenario but checks remote pe imports the route but forwarding fails on the core transit. This case instead needs a gate for a customer subnet is absent on the far side while local sites exchange correctly and evidence that the authorized VPN subnet is learned across the AS boundary without tenant mixing.

This gate monitors a different failure, an interprovider labeled packet cannot be forwarded through the upstream core. It would not detect the current problem: A customer subnet is absent on the far side while local sites exchange correctly. The appropriate check requires the authorized VPN subnet is learned across the AS boundary without tenant mixing.

The option may be useful when a remote PE selects the backup site because the route policy overwrote local preference, but that is not the current evidence. Here, an interprovider labeled packet cannot be forwarded through the upstream core, indicating the carrier-of-carriers design lacks compatible labeled route distribution and transport resolution. The targeted action is Configure the supported hierarchical labeled transport service end to end.

This change belongs to a different Layer 3 VPNs issue: Two spoke sites unexpectedly exchange routes without the central hub. That issue involves spoke import/export rt policy grants direct spoke route membership. The current symptom is An interprovider labeled packet cannot be forwarded through the upstream core. It instead requires configure the supported hierarchical labeled transport service end to end.

This remediates site-of-origin extended-community filtering is missing and can cause routing feedback, normally indicated by Both PEs advertise the same CE prefix with inconsistent site-of-origin tags. It would leave the observed problem (An interprovider labeled packet cannot be forwarded through the upstream core) unresolved. Address it with configure the supported hierarchical labeled transport service end to end.

This result is useful in another case with evidence Both PEs advertise the same CE prefix with inconsistent site-of-origin tags. It does not test recovery from an interprovider labeled packet cannot be forwarded through the upstream core. Check instead whether the downstream carrier can forward its labeled traffic across the upstream core.

That observation would verify a separate fault involving the vpn import policy modifies best-path attributes inconsistently. Its symptom is A remote PE selects the backup site because the route policy overwrote local preference. For this case the actual issue is the carrier-of-carriers design lacks compatible labeled route distribution and transport resolution, and the relevant success signal is The downstream carrier can forward its labeled traffic across the upstream core.

It confirms an unrelated service correction: Spoke import/export RT policy grants direct spoke route membership. The present case reports An interprovider labeled packet cannot be forwarded through the upstream core. Its completion test is The downstream carrier can forward its labeled traffic across the upstream core.

That explanation fits another condition: Both PEs advertise the same CE prefix with inconsistent site-of-origin tags. The evidence here is An interprovider labeled packet cannot be forwarded through the upstream core. Its closer root cause is The carrier-of-carriers design lacks compatible labeled route distribution and transport resolution.

Spoke import/export RT policy grants direct spoke route membership. would normally be accompanied by two spoke sites unexpectedly exchange routes without the central hub. The observed symptom is different: An interprovider labeled packet cannot be forwarded through the upstream core. The likely cause is The carrier-of-carriers design lacks compatible labeled route distribution and transport resolution.

The stated cause is possible elsewhere but explains a remote pe selects the backup site because the route policy overwrote local preference, not an interprovider labeled packet cannot be forwarded through the upstream core. This incident is better attributed to the carrier-of-carriers design lacks compatible labeled route distribution and transport resolution.

It is valid for another service scenario but checks both pes advertise the same ce prefix with inconsistent site-of-origin tags. This case instead needs a gate for an interprovider labeled packet cannot be forwarded through the upstream core and evidence that the downstream carrier can forward its labeled traffic across the upstream core.

This gate monitors a different failure, two spoke sites unexpectedly exchange routes without the central hub. It would not detect the current problem: An interprovider labeled packet cannot be forwarded through the upstream core. The appropriate check requires the downstream carrier can forward its labeled traffic across the upstream core.

The proposed control is tied to the vpn import policy modifies best-path attributes inconsistently, typically observed when a remote PE selects the backup site because the route policy overwrote local preference. Here the target is the carrier-of-carriers design lacks compatible labeled route distribution and transport resolution; monitor the downstream carrier can forward its labeled traffic across the upstream core.

This change belongs to a different Layer 3 VPNs issue: A route received through one partner is installed in the other's VRF. That issue involves cross-service route-target import is too permissive for overlapping partner addresses. The current symptom is A remote PE selects the backup site because the route policy overwrote local preference. It instead requires restore the intended per-VRF primary/backup BGP route policy.

The option may be useful when the new VRF learns only one existing site after provisioning, but that is not the current evidence. Here, a remote PE selects the backup site because the route policy overwrote local preference, indicating the vpn import policy modifies best-path attributes inconsistently. The targeted action is Restore the intended per-VRF primary/backup BGP route policy.

This remediates export and import route-target changes were not staged compatibly, normally indicated by Existing remote PEs stop importing routes before the new target is installed. It would leave the observed problem (A remote PE selects the backup site because the route policy overwrote local preference) unresolved. Address it with restore the intended per-VRF primary/backup BGP route policy.

It confirms an unrelated service correction: Cross-service route-target import is too permissive for overlapping partner addresses. The present case reports A remote PE selects the backup site because the route policy overwrote local preference. Its completion test is VPN best path favors the primary and moves to backup during failure.

That observation would verify a separate fault involving the new site imports an incomplete set of route targets for the vpn. Its symptom is The new VRF learns only one existing site after provisioning. For this case the actual issue is the vpn import policy modifies best-path attributes inconsistently, and the relevant success signal is VPN best path favors the primary and moves to backup during failure.

This result is useful in another case with evidence Existing remote PEs stop importing routes before the new target is installed. It does not test recovery from a remote pe selects the backup site because the route policy overwrote local preference. Check instead whether vPN best path favors the primary and moves to backup during failure.

That explanation fits another condition: Existing remote PEs stop importing routes before the new target is installed. The evidence here is A remote PE selects the backup site because the route policy overwrote local preference. Its closer root cause is The VPN import policy modifies best-path attributes inconsistently.

The stated cause is possible elsewhere but explains the new vrf learns only one existing site after provisioning, not a remote pe selects the backup site because the route policy overwrote local preference. This incident is better attributed to the vpn import policy modifies best-path attributes inconsistently.

Cross-service route-target import is too permissive for overlapping partner addresses. would normally be accompanied by a route received through one partner is installed in the other's vrf. The observed symptom is different: A remote PE selects the backup site because the route policy overwrote local preference. The likely cause is The VPN import policy modifies best-path attributes inconsistently.

The proposed control is tied to the new site imports an incomplete set of route targets for the vpn, typically observed when the new VRF learns only one existing site after provisioning. Here the target is the vpn import policy modifies best-path attributes inconsistently; monitor vPN best path favors the primary and moves to backup during failure.

It is valid for another service scenario but checks existing remote pes stop importing routes before the new target is installed. This case instead needs a gate for a remote pe selects the backup site because the route policy overwrote local preference and evidence that vPN best path favors the primary and moves to backup during failure.

This gate monitors a different failure, a route received through one partner is installed in the other's vrf. It would not detect the current problem: A remote PE selects the backup site because the route policy overwrote local preference. The appropriate check requires vPN best path favors the primary and moves to backup during failure.

This remediates mp-bgp ospf domain or extended-community treatment differs across provider edges, normally indicated by Routes appear as interarea paths at a remote CE rather than expected intra-area continuation. It would leave the observed problem (Existing remote PEs stop importing routes before the new target is installed) unresolved. Address it with temporarily accept both RTs during a controlled migration then remove the old one.

This change belongs to a different Layer 3 VPNs issue: The remote PE sees the updated VPNv4 prefix but CE traffic cannot return. That issue involves return-route exchange from the new site into its local vrf is missing. The current symptom is Existing remote PEs stop importing routes before the new target is installed. It instead requires temporarily accept both RTs during a controlled migration then remove the old one.

The option may be useful when customer VRFs can reach shared DNS but also import other tenants' direct routes, but that is not the current evidence. Here, existing remote PEs stop importing routes before the new target is installed, indicating export and import route-target changes were not staged compatibly. The targeted action is Temporarily accept both RTs during a controlled migration then remove the old one.

It confirms an unrelated service correction: Return-route exchange from the new site into its local VRF is missing. The present case reports Existing remote PEs stop importing routes before the new target is installed. Its completion test is Every site remains reachable through migration and converges on the new RT.

That observation would verify a separate fault involving the shared-services exchange uses transit rts that permit uncontrolled customer-to-customer reachability. Its symptom is Customer VRFs can reach shared DNS but also import other tenants' direct routes. For this case the actual issue is export and import route-target changes were not staged compatibly, and the relevant success signal is Every site remains reachable through migration and converges on the new RT.

This result is useful in another case with evidence Routes appear as interarea paths at a remote CE rather than expected intra-area continuation. It does not test recovery from existing remote pes stop importing routes before the new target is installed. Check instead whether every site remains reachable through migration and converges on the new RT.