MPLS LDP IGP synchronization is configured on a link. The OSPF adjacency on that link is UP but
MPLS LDP synchronization is not achieved. Which statement about this scenario is true?
A.
The router excludes the link from its OSPF LSA type 1.
B.
The router flushes its own router LSA.
C.
The router advertises the link in its router LSA with max-metric.
D.
The router advertises an LSA type 2 for this link, with the metric set to max-metric.
E.
The router advertises the link and OSPF adjacency as it would when the synchronization is
achieved.
To enable LDP-IGP Synchronization on each interface that belongs to an OSPF or IS-IS process,
enter the mpls ldp sync command. If you do not want some of the interfaces to have LDP-IGP
Synchronization enabled, issue the no mpls ldp igp sync command on those interfaces.
If the LDP peer is reachable, the IGP waits indefinitely (by default) for synchronization to be
achieved. To limit the length of time the IGP session must wait, enter the mpls ldp igp sync holddown command. If the LDP peer is not reachable, the IGP establishes the adjacency to
enable the LDP session to be established.
When an IGP adjacency is established on a link but LDP-IGP Synchronization is not yet achieved
or is lost, the IGP advertises the max-metric on that link.
Reference. http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/fsldpsyn.html
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