Configuring Received Ospf Route Filtering; Configuring Type-3 Lsa Filtering; Configuring An Ospf Cost For An Interface - HP 5500 EI series Configuration Manual

Configuring received OSPF route filtering

Perform this task to filter routes calculated using received LSAs.
The following filtering methods are available:
Use an ACL or IP prefix list to filter routing information by destination address.
•
• Use the gateway keyword to filter routing information by next hop.
Use an ACL or IP prefix list to filter routing information by destination address and at the same time
•
use the gateway keyword to filter routing information by next hop.
Use a routing policy to filter routing information.
•
To configure OSPF to filter routes calculated using received LSAs:
Step
1. Enter system view.
2. Enter OSPF view.
3. Configure OSPF to
filter routes calculated
using received LSAs.

Configuring Type-3 LSA filtering

Perform this task to filter Type-3 LSAs advertised to an area on an ABR.
To configure Type-3 LSA filtering:
Step
1. Enter system view.
2. Enter OSPF view.
3. Enter area view.
4. Configure Type-3 LSA
filtering.

Configuring an OSPF cost for an interface

Configure an OSPF cost for an interface by using either of the following methods:
Configure the cost value in interface view.
•
Configure a bandwidth reference value for the interface. OSPF computes the cost with this formula:
•
Interface OSPF cost = Bandwidth reference value (100 Mbps) / Expected interface bandwidth
(Mbps). The expected bandwidth of an interface is configured with the bandwidth command (see
Interface Command Reference). If the calculated cost is greater than 65535, the value of 65535 is
used. If the calculated cost is less than 1, the value of 1 is used. If no cost or bandwidth reference
Command
system-view
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
filter-policy { acl-number [ gateway
ip-prefix-name ] | gateway ip-prefix-name |
ip-prefix ip-prefix-name [ gateway
ip-prefix-name ] | route-policy
route-policy-name } import
Command
system-view
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
area area-id
filter { acl-number | ip-prefix
ip-prefix-name } { import | export }
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Remarks
N/A
N/A
By default, OSPF accepts all
routes calculated using
received LSAs.
Remarks
N/A
N/A
N/A
By default, the ABR does
not filter Type-3 LSAs.