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Step
3.
Configure IS-IS route
summarization.
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:
Step
1.
Enter system view.
2.
Enter IS-IS IPv4 unicast
address family view.
3.
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:
Step
1.
Enter system view.
2.
Enter IS-IS IPv4 unicast
address family view.
Command
summary ip-address { mask-length
| mask } [ avoid-feedback |
generate_null0_route | [ level-1 |
level-1-2 | level-2 ] | tag tag ] *
Command
system-view
a
isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
b
cost-style { wide |
wide-compatible }
c
address-family ipv4
[ unicast ]
default-route-advertise [ [ level-1 |
level-1-2 | level-2 ] | route-policy
route-policy-name ] *
Command
system-view
a
isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
b
cost-style { wide |
wide-compatible }
c
address-family ipv4
[ unicast ]
147
Remarks
By default, route summarization
is not configured.
Remarks
N/A
N/A
By default, IS-IS does not
advertise a Level-1 or Level-2
default route.
Remarks
N/A
N/A
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Troubleshooting
