Specifications

mpls traffic-eng reoptimize timers delay
MP-344
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
mpls traffic-eng reoptimize timers delay
To delay removal of old label switched paths (LSPs) or installation of new LSPs after tunnel
reoptimization, use the mpls traffic-eng reoptimize timers delay command in global configuration
mode. To restore the default value, use the no form of this command.
mpls traffic-eng reoptimize timers delay {c
leanup delay-time | installation delay-time}
no mpls traffic-eng reoptimize timers delay {c
leanup delay-time | installation delay-time}
Syntax Description
Command Default Removal of old LSPs and installation of new LSPs is not delayed.
Command Modes Global configuration
Command History
Usage Guidelines A device with Multiprotocol Label Switching traffic engineering (MPLS TE) tunnels periodically
e
xamines tunnels with established LSPs to discover if more efficient LSPs (paths) are available. If a
better LSP is available, the device signals the more efficient LSP; if the signaling is successful, the
device replaces the older LSP with the new, more efficient LSP.
Sometimes the slower router-point nodes may not yet utilize the new label’s forwarding plane. In this
c
ase, if the headend node replaces the labels quickly, it can result in brief packet loss. By delaying the
cleanup of the old LSP using the mpls traffic-eng reoptimize timers delay cleanup command, packet
loss is avoided.
Examples The following example shows how to set the reoptimization cleanup delay time to one minute:
Router# configure
Router(config)# mpls traffic-eng reoptimize timers delay cleanup
60
cleanup delay-time Delays removal of old LSPs after tunnel reoptimization for the specified
number of seconds. The valid range is from 0 to 60 seconds. A value of 0
disables the delay. The default is 10 seconds.
installation d
elay-time Delays installation of new LSPs with new labels after tunnel reoptimization
for the specified number of seconds. The valid range is from 0 to
3600 seconds. A value of 0 disables the delay. The default is 3 seconds.
Release Modification
12.0(32)S This command was introduced.
12.2(25)S This command was integrated into Cisco IOS Release 12.2(25)S.
12.2(28)SB This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.