147
3. Configure IS-IS route
summarization.
summary
ip-address { mask-length
| mask } [
avoid-feedback
|
generate_null0_route
| [
level-1
|
level-1-2
|
level-2
] |
tag
tag ] *
By default, route summarization
is not configured.
Advertising a default route
IS-IS cannot redistribute a default route to its neighbors. This task enables IS-IS to advertise a
default route of 0.0.0.0/0 in an LSP to the same-level neighbors. Upon receiving the default route, the
neighbors add it into their routing table.
To advertise a default route:
1. Enter system view.
N/A
2. Enter IS-IS IPv4 unicast
address family view.
a isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
b cost-style { wide |
wide-compatible }
c address-family ipv4
[ unicast ]
N/A
3. Advertise a Level-1 or
Level-2 default route.
default-route-advertise
[ [
level-1
|
level-1-2
|
level-2
] |
route-policy
route-policy-name ] *
By default, IS-IS does not
advertise a Level-1 or Level-2
default route.
Configuring IS-IS route redistribution
Perform this task to redistribute routes from other routing protocols into IS-IS. You can specify a cost
for redistributed routes and specify the maximum number of redistributed routes.
To configure IS-IS route redistribution from other routing protocols:
1. Enter system view.
system-view
N/A
2. Enter IS-IS IPv4 unicast
address family view.
a isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
b cost-style { wide |
wide-compatible }
c address-family ipv4
[ unicast ]
N/A
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