R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

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By referencing a configured ACL, IP prefix list or routing policy, you can filter the calculated routes. Only
the routes matching the filter can be added into the IS-IS routing table.
To filter routes calculated from received LSPs:
Ste
p
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. Filter routes calculated
from received LSPs.
filter-policy { acl-number | ip-prefix
ip-prefix-name | route-policy route-policy-name }
import
By default, no filtering is
configured.
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.
To configure the filtering of redistributed routes:
Ste
p
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. 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 ] ]
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.
To configure IS-IS route leaking:
Ste
p
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. 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 ] *
Disabled by
default.