IS-IS timers allow you to fine tune IS-IS operation. IS-IS Configuration Timers and Commands lists the IS-IS timers and the command you can use to adjust them.
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 |
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