IS-IS Timer	Default Value	Function
CSNP Timer	10s	Specifies the interval for sending CSNPs on a broadcast network by using the parameter csnp-interval.
HELLO Timer	(3s for the DIS)	Specifies the interval for sending Hello messages.
lsp-retransmit Timer	5s	Specifies the interval for resending LSPs, that is, the interval between marking LSPs with the SRM and sending LSPs on a P2P link.
lsp-throttle Timer	50 ms	Specifies the minimum interval for sending LSPs.
lsp-generation Timer	2s	Specifies the maximum interval for generating an LSP.
lsp-max-age Timer	1200s	Specifies the maximum Keepalive time of an LSP generated by the current IS-IS process, which is configured by using the timer lspmax-age command.
lsp-refresh Timer	900s	Specifies the LSP refresh interval, which is configured by using the timer lsp-refresh command.
spf	10s	Specifies the maximum delay of route calculation.
PSNP Timer	5s	Specifies the interval between marking PSNPs with the SSN and sending PSNPs. Minimum interval for sending packets on a broadcast network
Minimum interval for sending packets on a broadcast network	50 ms	Specifies the interval between marking LSPs with the SRM and sending LSPs.