HP VPN Firewall Appliances Network Management Configuration Guide

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Configuring OSPF route redistribution
Only active routes can be redistributed. Use the display ip routing-table protocol command to view route
state information.
1. Configuring OSPF to redistribute routes from other routing protocols
On a router running OSPF and other routing protocols, you can configure OSPF to redistribute
routes from other protocols such as RIP, BGP, static, and direct, and advertise them in Type-5 LSAs
or Type-7 LSAs. In addition, you can filter redistributed routes so that OSPF advertises only
permitted routes.
To configure OSPF route redistribution:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter OSPF view.
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
N/A
3. Configure OSPF to
redistribute routes from
a different protocol.
import-route protocol [ process-id |
all-processes | allow-ibgp ] [ cost cost
| type type | tag tag | route-policy
route-policy-name ] *
By default, OSPF does not
redistribute routes.
4. Configure OSPF to filter
redistributed routes
before advertisement.
filter-policy { acl-number | ip-prefix
ip-prefix-name } export [ protocol
[ process-id ] ]
Optional.
By default, OSPF does not filter
redistributed routes before
advertisement.
2. Configuring OSPF to redistribute a default route
The import-route command cannot redistribute a default external route. Perform this task to
redistribute a default external route.
To configure OSPF to redistribute a default external route:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter OSPF view.
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
N/A
3. Redistribute a
default route.
default-route-advertise
[ [ [ always |
permit-calculate-other ] | cost
cost | route-policy
route-policy-name | type type ]
* | summary cost cost ]
Not redistributed by default.
The default-route-advertise summary cost
command is applicable only to VPNs. The PE
router advertises the default route in a Type-3
LSA to the CE router.
3. Configuring the default parameters for redistributed routes
Perform this task to configure default parameters for redistributed routes, including cost, tag, and
type. Tags indicate information about protocols. For example, when redistributing BGP routes,
OSPF uses tags to identify AS IDs.
To configure the default parameters for redistributed routes: