Configuring Graceful Restart For An Evi Is-Is Process - H3C S12500 Series Configuration Manual

Step
3. Configure the LSP refresh interval.
Enabling adjacency change logging
Adjacency change logging enables an EVI IS-IS process to send a log message to the information center
when an adjacency change occurs. With the information center, you can set log message filtering and
output rules, including output destinations. For more information about using the information center, see
Network Management and Monitoring Configuration Guide.
To enable adjacency change logging:
Step
1. Enter system view.
Enter EVI IS-IS view.
2.
3. Enable adjacency change logging.

Configuring graceful restart for an EVI IS-IS process

Enable graceful restart for the peer EVI IS-IS processes at two ends of an EVI tunnel to guarantee nonstop
forwarding while the peer EVI IS-IS processes are re-establishing their adjacency after a process restart
or active/standby switchover occurs.
If graceful restart is enabled, the adjacency hold time equals the restart interval or the EVI IS-IS hello
interval multiplied by the holding-multiplier, whichever is greater. (For a DED, the hello interval is
one-third of the hello interval set with the evi-isis timer hello command.)
To configure graceful restart for an EVI IS-IS process:
Step
1. Enter system view.
2. Enter EVI IS-IS process view.
3. Enable graceful restart.
Command
timer lsp-refresh seconds
Command
system-view
evi-isis process-id
log-peer-change enable
Command
system-view
evi-isis process-id
graceful-restart
17
Remarks
The default LSP refresh
interval is 900 seconds.
The minimum LSP sending
interval and the maximum
number of LSPs sent at each
interval can affect the actual
LSP refresh interval.
To avoid unnecessary
age-outs, appropriately set
the LSP refresh interval and
the LSP lifetime.
Remarks
N/A
N/A
By default, adjacency change
logging is enabled.
Remarks
N/A
N/A
By default, EVI IS-IS graceful restart is
disabled.