H3C Technologies H3C S12500 Series Switches - Manual (Page 99)

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Step 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 inbound
route filtering.
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
Not configured by default.
Configuring ABR Type-3 LSA filtering
You can configure an ABR to filter Type-3 LSAs advertised to an area.
To configure Type-3 LSA filtering on an ABR:
Step 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. Enter area view. area area-id N/A
4. Configure ABR Type-3 LSA
filtering. filter { acl-number | ip-prefix
ip-prefix-name } { import | export } Not configured by
default.
Configuring an OSPF cost for an interface
You can 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, and OSPF computes the cost with this
formula: Interface OSPF cost = Bandwidth reference value (100 Mbps)/Interface bandwidth (Mbps).
If the calculated cost is greater than 65,535, the value of 65,535 is used; if the calculated cost is
less than 1, the value of 1 is used.
If no cost is configured for an interface, OSPF computes the interface cost automatically.
To configure an OSPF cost for an interface:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure an OSPF cost
for the interface.
ospf cost value
Optional.
The default cost depends on the interface
type: 1 for a VLAN interface and 0 for a
loopback interface, computed according
to the bandwidth for other interfaces.