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MPLS Guide
Step 3.
The no form of this command disables fast upstream switchover for mLDP FECs.
Default
no mcast-upstream-frr
mp-mbb-time
Syntax
mp-mbb-time interval
no mp-mbb-time
Context
config>router>ldp
Description
This command configures the maximum time a point-to-multipoint transit or bud node must
wait before switching over to the new path if the new node does not send an MBB TLV to
inform the transit or bud node of the availability of the data plane.
The no form of the command sets the wait time to the default.
Default
3 s
Parameters
interval — specifies the MP MBB wait time
tunnel-down-damp-time
Syntax
tunnel-down-damp-time seconds
no tunnel-down-damp-time
Context
config>router>ldp
Description
This command specifies the time interval, in seconds, that LDP waits before posting a tunnel
down event to the Tunnel Table Manager (TTM).
When LDP can no longer resolve a FEC and deactivates it, it deprograms the NHLFE in the
data path. It will, however, delay deleting the LDP tunnel entry in the TTM until the
tunnel-down-damp-time timer expires. This means that users of the LDP tunnel, such as
SDPs (for all services) and BGP (for Layer 3 VPNs), will not be notified immediately. Traffic
is still blackholed because the NHLFE has been deprogrammed.
3HE 18686 AAAB TQZZA
Enable the ldp-sync-timer option on all interfaces to the upstream LSR nodes. If
an LDP session to the upstream LSR to which the primary ILM is resolved goes
down for any reason other than a failure of the interface or of the upstream LSR,
routing and LDP will go out of synchronization. This means that the backup ILM
will remain activated until the next time SPF is run by IGP. By enabling the
IGP-LDP synchronization feature, the advertised link metric will be changed to the
maximum value as soon as the LDP session goes down. This, in turn, triggers an
SPF, and LDP will download a new set of primary and backup ILMs.
Values
1 to 10 seconds
Use subject to Terms available at: www.nokia.com
© 2022 Nokia.
Label Distribution Protocol
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