H3C Technologies H3C SecPath F1000-E - Manual (Page 532)

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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:
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. Advertise a default
route.
default-route-advertise [ route-policy
route-policy-name | [ level-1 | level-1-2 |
level-2 ] ] *
By default, the function is disabled.
NOTE:
The default route is only advertised to routers at the same level. You can use a routing policy to generate
the default route only when a local routing entry is matched by the policy.
Configuring IS-IS route redistribution
Redistributing large numbers of routes on a device may affect the performance of other devices in the
network. If this happens, you can configure a limit on the number of redistributed routes in order to limit
the number of routes to be advertised.
To configure IS-IS route redistribution from other routing protocols:
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. Redistribute routes
from another
routing protocol.
import-route protocol [ process-id |
all-processes | allow-ibgp ] [ cost cost |
cost-type { external | internal } | [ level-1 |
level-1-2 | level-2 ] | route-policy
route-policy-name | tag tag ] *
By default, no route is
redistributed.
By default, if no level is specified,
routes are redistributed into the
Level-2 routing table.
4. Configure the
maximum number
of redistributed
Level 1/Level 2
IPv4 routes.
import-route limit number
Optional.
By default, the maximum number of
redistributed Level 1/Level 2 IPv4
routes is 500000.
NOTE:
Only active routes can be redistributed. Use the display ip routing-table protocol command to display
route state information.