Functions and default values of IS-IS timers on S series switches

The functions and default values of IS-IS timers are as follows:
CSNP Timer
10s
csnp-interval: specifies the interval for sending CSNPs on a broadcast network.

HELLO Timer
10s (3s for the DIS)
Specifies the interval for sending Hello messages.
lsp-retransmit Timer
5s
Specifies the interval for re-sending LSP packets, that is, the interval between marking LSP packets with SRM on a P2P link and sending LSP packets.

lsp-throttle Timer
50 ms
Specifies the minimum interval for sending LSP packets.

lsp-generation Timer
2s
Specifies the maximum interval for generating LSP packets.

lsp-max-age Timer
1200s
Specifies the maximum Keepalive time of an LSP generated by the current IS-IS process, which is configured using the timer lsp-max-age command.

lsp-refresh Timer
900s
Specifies the LSP refresh interval, which is configured using the timer lsp-refresh command.

spf
10s
Specifies the maximum delay in route calculation.

PSNP Timer
5s
Specifies the interval between marking PSNPs with SSN and sending PSNPs.

Specifies the minimum interval for sending packets on a broadcast network.
50 ms

Specifies the interval between marking LSP packets with SRM and sending LSP packets.

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