148
Step Command
Remarks
6.
Configure a DIS name.
isis dis-name
symbolic-name
By default, no DIS name is configured.
This command takes effect only on a
router enabled with dynamic system ID to
host name mapping.
This command is not available on P2P
interfaces.
Enabling the logging of neighbor state changes
With this feature enabled, the router delivers logs about neighbor state changes to its information center.
The information center processes the logs according to user-defined output rules (whether to output logs
and where to output). For more information about the information center, see
Network Management and
Monitoring Configuration Guide
.
To enable the logging of neighbor state changes:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter IS-IS view.
isis
[
process-id
] [
vpn-instance
vpn-instance-name
]
N/A
3.
Enable the logging of
neighbor state changes.
log-peer-change
By default, the logging of
neighbor state changes is
enabled.
Enabling IS-IS ISPF
When the network topology changes, Incremental Shortest Path First (ISPF) computes only the affected
part of the SPT, instead of the entire SPT.
To enable IS-IS ISPF:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter IS-IS IPv4
unicast address
family view.
1.
isis
[
process-id
] [
vpn-instance
vpn-instance-name
]
2.
cost-style
{
wide
|
wide-compatible
}
3.
address-family ipv4
[
unicast
]
N/A
3.
Enable IS-IS ISPF.
ispf enable
By default, IS-IS is disabled.
Enabling prefix suppression
Perform this task to disable an interface from advertising its prefix in LSPs. This enhances network security
by preventing IP routing to the interval nodes and speeds up network convergence.
To enable prefix suppression:
