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This concern applies to LDP directly connected hello discovery in a different scenario where operators need to form LDP adjacency on a provider core link carrying labeled traffic. For the deployed targeted LDP session approach, the relevant caution is instead that remote LDP signaling still needs end-to-end IP reachability.

This concern applies to DS-TE class type allocation in a different scenario where operators need to reserve traffic engineering resources separately for differentiated service classes. For the deployed targeted LDP session approach, the relevant caution is instead that remote LDP signaling still needs end-to-end IP reachability.

This concern applies to TI-LFA link repair in a different scenario where operators need to protect an SR transport link using a loop-free post-convergence backup. For the deployed targeted LDP session approach, the relevant caution is instead that remote LDP signaling still needs end-to-end IP reachability.

MPLS label forwarding fault isolation instead addresses a different condition: localize loss along a labeled transport LSP rather than at a customer application. It would instead require you to use MPLS OAM echo or traceroute along the intended forwarding equivalence class, not the stated goal to avoid forwarding traffic onto a link before necessary MPLS labels are usable.

SRGB consistent index mapping instead addresses a different condition: ensure a prefix segment index resolves to an MPLS label on every transit node. It would instead require you to advertise and interpret SRGB parameters correctly for each segment-routing node, not the stated goal to avoid forwarding traffic onto a link before necessary MPLS labels are usable.

PCE stale topology risk instead addresses a different condition: avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It would instead require you to synchronize PCE topology and performance feeds before delegated path calculation, not the stated goal to avoid forwarding traffic onto a link before necessary MPLS labels are usable.

The proposed step is for MPLS label forwarding fault isolation, whose purpose is to localize loss along a labeled transport LSP rather than at a customer application. It would not perform the necessary IGP LDP synchronization operation: apply LDP IGP synchronization so route preference waits for LDP readiness.

The proposed step is for SRGB consistent index mapping, whose purpose is to ensure a prefix segment index resolves to an MPLS label on every transit node. It would not perform the necessary IGP LDP synchronization operation: apply LDP IGP synchronization so route preference waits for LDP readiness.

The proposed step is for PCE stale topology risk, whose purpose is to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It would not perform the necessary IGP LDP synchronization operation: apply LDP IGP synchronization so route preference waits for LDP readiness.

The observation would verify MPLS label forwarding fault isolation under the separate requirement to localize loss along a labeled transport LSP rather than at a customer application. It does not demonstrate the needed IGP LDP synchronization result: the IGP suppresses preferential forwarding until the LDP adjacency is ready.

The observation would verify SRGB consistent index mapping under the separate requirement to ensure a prefix segment index resolves to an MPLS label on every transit node. It does not demonstrate the needed IGP LDP synchronization result: the IGP suppresses preferential forwarding until the LDP adjacency is ready.

The observation would verify PCE stale topology risk under the separate requirement to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It does not demonstrate the needed IGP LDP synchronization result: the IGP suppresses preferential forwarding until the LDP adjacency is ready.

This defect belongs to MPLS label forwarding fault isolation, where the affected outcome is to localize loss along a labeled transport LSP rather than at a customer application. It is not the direct failure mode identified for the IGP LDP synchronization design in this case: SPF uses a link with no usable labels and drops transit VPN packets.

This defect belongs to SRGB consistent index mapping, where the affected outcome is to ensure a prefix segment index resolves to an MPLS label on every transit node. It is not the direct failure mode identified for the IGP LDP synchronization design in this case: SPF uses a link with no usable labels and drops transit VPN packets.

This defect belongs to PCE stale topology risk, where the affected outcome is to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It is not the direct failure mode identified for the IGP LDP synchronization design in this case: SPF uses a link with no usable labels and drops transit VPN packets.

This concern applies to MPLS label forwarding fault isolation in a different scenario where operators need to localize loss along a labeled transport LSP rather than at a customer application. For the deployed IGP LDP synchronization approach, the relevant caution is instead that synchronization failure handling should not permanently isolate healthy IP service.

This concern applies to SRGB consistent index mapping in a different scenario where operators need to ensure a prefix segment index resolves to an MPLS label on every transit node. For the deployed IGP LDP synchronization approach, the relevant caution is instead that synchronization failure handling should not permanently isolate healthy IP service.

This concern applies to PCE stale topology risk in a different scenario where operators need to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. For the deployed IGP LDP synchronization approach, the relevant caution is instead that synchronization failure handling should not permanently isolate healthy IP service.

LDP address family transport instead addresses a different condition: carry the intended labeled IPv4 transport prefixes consistently across a provider core. It would instead require you to enable the supported address-family LDP capability on participating routers, not the stated goal to keep an LDP link adjacency stable through brief congestion without hiding real forwarding loss.

PCE constrained path computation instead addresses a different condition: delegate constrained SR-TE or MPLS-TE path computation to a path computation entity. It would instead require you to use a PCE-PCC architecture with agreed objectives and topology visibility, not the stated goal to keep an LDP link adjacency stable through brief congestion without hiding real forwarding loss.

PCE stale topology risk instead addresses a different condition: avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It would instead require you to synchronize PCE topology and performance feeds before delegated path calculation, not the stated goal to keep an LDP link adjacency stable through brief congestion without hiding real forwarding loss.

The proposed step is for LDP address family transport, whose purpose is to carry the intended labeled IPv4 transport prefixes consistently across a provider core. It would not perform the necessary LDP hello discovery timer resilience operation: coordinate supported LDP hello interval and discovery holdtime settings on both core neighbors.

The proposed step is for PCE constrained path computation, whose purpose is to delegate constrained SR-TE or MPLS-TE path computation to a path computation entity. It would not perform the necessary LDP hello discovery timer resilience operation: coordinate supported LDP hello interval and discovery holdtime settings on both core neighbors.

The proposed step is for PCE stale topology risk, whose purpose is to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It would not perform the necessary LDP hello discovery timer resilience operation: coordinate supported LDP hello interval and discovery holdtime settings on both core neighbors.

The observation would verify LDP address family transport under the separate requirement to carry the intended labeled IPv4 transport prefixes consistently across a provider core. It does not demonstrate the needed LDP hello discovery timer resilience result: LDP discovery remains stable through transient hello jitter and times out after a sustained failure.

The observation would verify PCE constrained path computation under the separate requirement to delegate constrained SR-TE or MPLS-TE path computation to a path computation entity. It does not demonstrate the needed LDP hello discovery timer resilience result: LDP discovery remains stable through transient hello jitter and times out after a sustained failure.

The observation would verify PCE stale topology risk under the separate requirement to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It does not demonstrate the needed LDP hello discovery timer resilience result: LDP discovery remains stable through transient hello jitter and times out after a sustained failure.

This defect belongs to LDP address family transport, where the affected outcome is to carry the intended labeled IPv4 transport prefixes consistently across a provider core. It is not the direct failure mode identified for the LDP hello discovery timer resilience design in this case: the discovery holdtime expires between expected valid LDP hello packets.

This defect belongs to PCE constrained path computation, where the affected outcome is to delegate constrained SR-TE or MPLS-TE path computation to a path computation entity. It is not the direct failure mode identified for the LDP hello discovery timer resilience design in this case: the discovery holdtime expires between expected valid LDP hello packets.

This defect belongs to PCE stale topology risk, where the affected outcome is to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. It is not the direct failure mode identified for the LDP hello discovery timer resilience design in this case: the discovery holdtime expires between expected valid LDP hello packets.

This concern applies to LDP address family transport in a different scenario where operators need to carry the intended labeled IPv4 transport prefixes consistently across a provider core. For the deployed LDP hello discovery timer resilience approach, the relevant caution is instead that long holdtimes may delay discovery of a genuine failed adjacent link.

This concern applies to PCE constrained path computation in a different scenario where operators need to delegate constrained SR-TE or MPLS-TE path computation to a path computation entity. For the deployed LDP hello discovery timer resilience approach, the relevant caution is instead that long holdtimes may delay discovery of a genuine failed adjacent link.

This concern applies to PCE stale topology risk in a different scenario where operators need to avoid calculating SR-TE paths from outdated connectivity or bandwidth state. For the deployed LDP hello discovery timer resilience approach, the relevant caution is instead that long holdtimes may delay discovery of a genuine failed adjacent link.