3Com 3031 Command Reference Manual page 610

3com 3031: reference guide

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import-route isis

level-1-2: Imports the route into Level-1-2 routing table.

If the level for importing the route is not specified in the command, it defaults

to import the routes into Level-1 and Level-2, i.e. Level-1-2 routing table.

route-policy route-policy-name: Imports only the routes matching the specified

route-policy.

Using the import-route command, you can configure IS-IS to filter the imported

routes. Using the undo import-route command, you can configure IS-IS not to

import the routing information of other protocols.

By default, IS-IS does not import routing information from any other protocols.

For IS-IS, the routes discovered by other routing protocols are processed as the

routes outside the routing domain. When importing the routes of other protocols,

you can specify the default cost for them. If OSPF routes are imported, you can

also specify the cost type for them.

When IS-IS imports routes, you can specify to import the routes to Level-1, Level-2

or Level-1-2.

IS-IS regards all the routes imported into the routing domain as the external

routes, which describe the way how to select the routes to the destination outside

the routing domain.

Import a static route with cost 15.

[3Com-isis] import-route static cost 15

import-route isis level-2 into level-1 [acl acl-list ]

undo import-route isis level-2 into level-1 [ acl acl-list ]

acl-list: ACL number. When configuring routing leak from Level-2 to Level-1,

only the routes that are permitted by ACL can be imported to Level-1 area if an

ACL has been specified.

Using the import-route isis level-2 into level-1 command, you can enable routing

information in a Level-2 area to be imported to a Level-1 area. Using the undo

import-route isis level-2 into level-1 command, you can remove the function.

By default, routing information in a Level-2 area is not imported to a Level-1 area.

Import routing information of a router from a Level-2 area to a Level-1 area.

[3Com] acl number 100 permit any