Alcatel-Lucent 6850-48 Guida Di Riferimento

MPLS LDP Commands

OmniSwitch CLI Reference Guide

page 24-21

Configures the MPLS Forwarding State Holding timer value for the local LDP router. This time value 
specifies the amount of time, in seconds, that the LDP router retains its MPLS forwarding state after a 
graceful restart.

configure router ldp fwd-state-holding-time seconds

The Forwarding State Holding timer value, in seconds. The valid range 
is from 5–300.

By default, the MPLS Forwarding State Holding time is set to 120 seconds.

OmniSwitch 9000E

• Use the no form of this command to set the Forwarding State Holding timer to the default value.

• This timer is started if the MPLS forwarding state of the restarting router was preserved after a grace-

ful restart. The router then marks the forwarding entries as “stale” for the length of this time value. 
When the timer expires, any entries that are still marked as stale are deleted.

• An LDP router is considered in the process of restarting if the Forwarding State Holding timer is still 

active. When the end of this holding time is reached, the restart process is considered complete for the 
router.

• The Recovery Time advertised in the FT Session TLV of the LDP message is set to the current value 

of the Forwarding State Holding timer at the time the message is sent. If the router did not retain its 
MPLS forwarding state after a restart, then the Recovery Time is set to zero.

-> configure router ldp fwd-state-holding-time 300

-> configure router ldp no fwd-state-holding-time

Release 6.4.2; command was introduced.