Configuring Is-Is Route Leaking - HP 5500 EI series Configuration Manual

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Step
1.
Enter system view.
2.
Enter IS-IS view.
3.
Filter routes calculated
using received LSPs.
Filtering redistributed routes
IS-IS can redistribute routes from other routing protocols or other IS-IS processes, add them to the IS-IS
routing table, and advertise them in LSPs.
Perform this task to filter redistributed routes. Only routes that are not filtered can be added to the IS-IS
routing table and advertised to neighbors.
To filter redistributed routes:
Step
1.
Enter system view.
2.
Enter IS-IS view.
3.
Filter routes redistributed from
other routing protocols or IS-IS
processes.

Configuring IS-IS route leaking

Perform this task to control route advertisement (route leaking) between Level- 1 and Level-2.
You can configure IS-IS to advertise routes from Level-2 to Level- 1 , and to not advertise routes from Level- 1
to Level-2.
To configure IS-IS route leaking:
Step
1.
Enter system view.
Enter IS-IS view.
2.
3.
Configure route
leaking from Level- 1 to
Level-2.
4.
Configure route
leaking from Level-2 to
Level- 1 .
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
filter-policy { acl-number | prefix-list
prefix-list-name | route-policy
route-policy-name } import
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
filter-policy { acl-number | prefix-list
prefix-list-name | route-policy
route-policy-name } export [ protocol
[ process-id ] ]
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
import-route isis level-1 into level-2 [ filter-policy
{ acl-number | prefix-list prefix-list-name |
route-policy route-policy-name } | tag tag ] *
import-route isis level-2 into level-1 [ filter-policy
{ acl-number | prefix-list prefix-list-name |
route-policy route-policy-name } | tag tag ] *
136
Remarks
N/A
N/A
By default, IS-IS route
filtering is not configured.
Remarks
N/A
N/A
By default, IS-IS route
filtering is not configured.
Remarks
N/A
N/A
By default, IS-IS advertises
routes from Level-1 to
Level-2.
By default, IS-IS does not
advertise routes from
Level-2 to Level-1.

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