R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

488
Ste
p
Command Remarks
3. Specify a priority for IS-IS.
preference { route-policy route-policy-name |
preference } *
15 by default.
Configuring the maximum number of ECMP routes
Perform this task to implement load sharing over ECMP routes.
To configure the maximum number of ECMP routes:
Ste
p
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. Specify the maximum number
of ECMP routes for load
balancing.
maximum load-balancing number
By default, the maximum
number of ECMP routes
for load balancing is 8.
Configuring IS-IS route summarization
This task allows you to configure a summary route, so routes falling into the network range of the
summary route are summarized into one route for advertisement. Doing so can reduce the size of routing
tables, as well as the scale of LSP and LSDB. Both IS-IS routes and redistributed routes can be
summarized.
To configure route summarization:
Ste
p
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. Configure IS-IS
route
summarization.
summary ip-address { mask | mask-length }
[ avoid-feedback | generate_null0_route | tag
tag | [ level-1 | level-1-2 | level-2 ] ] *
By default, no route summarization
is configured.
NOTE:
• The cost of the summary route is the lowest one among the costs of summarized routes.
• The router summarizes only the routes in the locally generated LSPs.
Advertising a default route
A router running IS-IS cannot redistribute any default route or advertise a default route to neighbors. You
can use the following commands to advertise a default route of 0.0.0.0/0 to the same level neighbors.
To advertise a default route: