3Com MSR 50, MSR 30 manual Graceful-restart suppress-sa, Import-route IS-IS view

1059

<Sysname> system-view [Sysname] isis 1

[Sysname-isis-1] graceful-restart interval 120

graceful-restart suppress-sa

Syntax	graceful-restart suppress-sa
	undo graceful-restart suppress-sa
View	IS-IS view
Parameters	None
Description	Use the graceful-restartsuppress-sacommand to set the SA
	(Suppress-Advertisement) bit during restart.
	Use the undo graceful-restartsuppress-sacommand to clear the SA bit
	during restart.
	By default, the SA bit is cleared during restart.
	Note that:
	■ A router that starts at the first time does not maintain the forwarding state. For
	a router that restarts IS-IS, copies of LSPs generated by this router during the
	previous incarnation may still exist in the lSP databases of other routers in the
	network.
	■ Copies of LSPs in the LSP databases in other routers which may look “newer”
	than LSPs generated by the restarting router after it initializes LSP fragment
	sequence numbers. This may result in temporary blackholes until subsequent
	LSPs with higher sequence numbers are regenerated.
	■ These blackholes can be avoided if the neighbors suppress advertising the
	previous adjacencies to the restarting router until the latter has flooded LSPs
	with higher sequence numbers.
Examples	# Set the SA bit during Graceful Restart.
	<Sysname> system-view
	[Sysname] isis 1
	[Sysname-isis-1] graceful-restart suppress-sa

import-route (IS-IS view)

Syntax import-route{ isis [ process-id ] ospf [ process-id ] rip [ process-id ] bgp

[ allow-ibgp ] direct static } [ cost cost cost-type { external internal } [ level-1 level-1-2 level-2 ] route-policy route-policy-name tag tag ] *

undo import-route{ isis [ process-id ] ospf [ process-id ] rip [ process-id ] bgp direct static }