Graceful-Restart Suppress-Sa; Import-Route (Is-Is View) - H3C MSR 20-20 Command Reference Manual

graceful-restart suppress-sa

Syntax
View
Parameters
Description
Examples

import-route (IS-IS view)

Syntax
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] graceful-restart interval 120
graceful-restart suppress-sa
undo graceful-restart suppress-sa
IS-IS view
None
Use the
graceful-restart suppress-sa
(Suppress-Advertisement) bit during restart.
Use the undo graceful-restart suppress-sa
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.
# Set the SA bit during Graceful Restart.
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] graceful-restart suppress-sa
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 }
command to set the SA
command to clear the SA bit
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