H3C Technologies H3C S7500E Series Switches - Manual (Page 70)

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The S7500E series can act as both a GR restarter and a GR helper.
Configuring LDP GR
Follow these steps to configure LDP GR:
To do… Use the command… Remarks
Enter system view system-view —
Enter MPLS LDP view mpls ldp —
Enable MPLS LDP GR graceful-restart
Required
Disabled by default
Set the FT reconnect time
graceful-restart timer reconnect
timer
Optional
300 seconds by default
Set the LDP neighbor liveness
time
graceful-restart timer
neighbor-liveness timer
Optional
120 seconds by default
Set the LDP recovery time
graceful-restart timer recovery
timer
Optional
300 seconds by default
Gracefully restarting MPLS LDP
To test whether the MPLS LDP GR configuration has taken effect, you can perform graceful restart of
MPLS LDP. During the LDP restart process, you can see whether the packet forwarding path is
changed and whether packet forwarding is interrupted.
Follow these steps to restart MPLS LDP gracefully:
To do… Use the command… Remarks
Restart MPLS LDP gracefully graceful-restart mpls ldp
Required
Available in user view
Do not perform this operation in normal cases.