Configuring IS-IS Timers

IS-IS timers allow you to fine tune IS-IS operation. The following table lists the IS-IS timers and the command you can use to adjust them.

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IS-IS Configuration Timers and Commands

Timer Command
T1 hello restart interval configure isis [vlan all | {vlan} vlan_name] timer restart-hello-interval seconds {level [1 | 2]}
T2 restart timer configure isis area area_name timer restart seconds {level [1 | 2]}
T3 restart grace period configure isis restart grace-period seconds
LSP generation interval configure isis area area_name timer lsp-gen-interval seconds {level[1| 2]}
LSP maximum lifetime configure isis area area_name timer max-lsp-lifetime seconds
LSP refresh interval configure isis area area_name timer lsp-refresh-interval seconds
SPF interval configure isis area area_name timer spf-interval seconds {level[1|2]}
CSNP interval configure isis [vlan all | {vlan} vlan_name] timer csnp-interval seconds {level [1 | 2]}
Hello interval configure isis [vlan all | {vlan} vlan_name] timer hello-interval [seconds | minimal] {level [1 | 2]}
Hello multiplier configure isis [vlan all | {vlan} vlan_name] hello-multiplier multiplier {level [1 | 2]}
LSP retransmit interval configure isis [vlan all | {vlan} vlan_name] timer retransmit-interval seconds
LSP transmit interval configure isis [vlan all | {vlan} vlan_name] timer lsp-interval milliseconds