Configuring The Maximum Number Of Ecmp Routes; Configuring Is-Is Route Summarization; Advertising A Default Route - HPE FlexNetwork HSR6800 Configuration Manual

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:
Step
Enter system view.
1.
Enter IS-IS view.
2.
Specify the maximum
3.
number of ECMP routes for
load balancing.

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.
The router summarizes only the routes in the locally generated LSPs. The cost of the summary route
is the lowest one among the costs of summarized routes.
To configure route summarization:
Step
Enter system
1.
view.
Enter IS-IS
2.
view.
Configure IS-IS
3.
route
summarization.

Advertising a default route

A router running IS-IS cannot redistribute any default routes or advertise a default route to neighbors.
Perform this task to advertise a default route of 0.0.0.0/0 to the same level neighbors.
You can use a routing policy to generate the default route only when a local routing entry is matched
by the policy.
To advertise a default route:
Step
Enter system view.
1.
Enter IS-IS view.
2.
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
[ ipv4-unicast topology-name ] maximum
load-balancing number
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
[ ipv4-unicast topology-name ] summary
ip-address { mask | mask-length }
[ avoid-feedback | generate_null0_route |
[ level-1 | level-1-2 | level-2 | tag tag ] *
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
137
Remarks
N/A
N/A
By default, the
maximum number of
ECMP routes is 8.
Remarks
N/A
N/A
No route summarization is
configured by default.
Remarks
N/A
N/A