R0106-HP MSR Router Series MPLS Command Reference(V7)

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{ If the LDP session is not set up before the Reconnect timer expires, the GR helper deletes stale
FEC-label mappings and corresponding MPLS forwarding entries.
{ If the LDP session is successfully set up before the Reconnect timer expires, the GR restarter sends
the remaining time of the MPLS Forwarding State Holding timer to the GR helper.
The remaining time is sent as the LDP Recovery time.
3. After the LDP session is reestablished, the GR helper starts the LDP Recovery timer.
4. The GR restarter and the GR helper exchange label mappings and update their MPLS forwarding
tables.
The GR restarter compares each received label mapping against stale MPLS forwarding entries. If
a match is found, the restarter deletes the stale mark for the matching entry. Otherwise, it adds a
new entry for the label mapping.
The GR helper compares each received label mapping against stale FEC-label mappings. If a
match is found, the helper deletes the stale mark for the matching mapping. Otherwise, it adds the
received FEC-label mapping and a new MPLS forwarding entry for the mapping.
5. When the MPLS Forwarding State Holding timer expires, the GR restarter deletes all stale MPLS
forwarding entries.
6. When the LDP Recovery timer expires, the GR helper deletes all stale FEC-label mappings.
Examples
# Set the MPLS Forwarding State Holding time to 200 seconds, and the Reconnect time to 100 seconds.
<Sysname> system-view
[Sysname] mpls ldp
[Sysname-ldp] graceful-restart timer forwarding-hold 200
[Sysname-ldp] graceful-restart timer reconnect 100
Related commands
• display mpls ldp parameter
• graceful-restart
igp sync delay
Use igp sync delay to configure the delay for LDP to notify IGP of the LDP convergence completion.
Use undo igp sync delay to restore the default.
Syntax
igp sync delay time
undo igp sync delay
Default
LDP immediately notifies IGP of the LDP convergence completion.
Views
LDP view
Predefined user roles
network-admin
Parameters
time: Specifies the notification delay in the range of 5 to 300 seconds.