H3C Technologies H3C S7500E Series Switches - Manual (Page 170)

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To do… Use the command… Remarks
Enter system view system-view ––
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
––
Filter routes calculated from
received LSPs
filter-policy { acl-number | ip-prefix
ip-prefix-name | route-policy
route-policy-name } import
Required
No filtering is configured by
default.
Filtering redistributed routes
IS-IS can redistribute routes from other routing protocols or other IS-IS processes, add them into the
IS-IS routing table and advertise them in LSPs.
By reference a configured ACL, IP prefix list or routing policy, you can filter redistributed routes and
only the routes matching the filter can be added into the IS-IS routing table and advertised to
neighbors.
Follow these steps to configure the filtering of redistributed routes:
To do… Use the command… Remarks
Enter system view system-view ––
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
––
Configure the filtering of routes
redistributed from another routing
protocol or IS-IS process
filter-policy { acl-number | ip-prefix
ip-prefix-name | route-policy
route-policy-name } export [ protocol
[ process-id ] ]
Required
Not configured by
default
Configuring IS-IS Route Leaking
With IS-IS route leaking enabled, the Level-1-2 router can advertise the routing information of other
Level-1 areas and Level-2 area routing information to Level-1 routers.
Follow these steps to configure IS-IS route leaking:
To do… Use the command… Remarks
Enter system view system-view ––
Enter IS-IS view isis [ process-id ] [ vpn-instance vpn-instance-name ] ––
Enable IS-IS route leaking
import-route isis level-2 into level-1 [ filter-policy
{ acl-number | ip-prefix ip-prefix-name | route-policy
route-policy-name } | tag tag ] *
Required
Disabled by
default