Brocade Communications Systems ICX 7250 series, Configuration Manual

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Assigning interfaces to an area
Once you define OSPFv2 areas, you can assign interfaces to the areas. All device ports must be assigned to one of the defined areas on
an OSPFv2 device. When a port is assigned to an area, all corresponding subnets on that port are automatically included in the
assignment.
To assign a loopback interface to an area with the IP address of 10.5.0.0, perform the following task:
1. Enter the configure terminal command to access global configuration mode.
device# configure terminal
2. Enter the interface command and specify an interface.
device(config)# interface loopback 2
3. Enter the ip ospf area command followed by the IP address of the area.
device(config-lbif-2)# ip ospf area 10.5.0.0
If you want to set an interface to passive mode, use the ip ospf passive command. If you want to block flooding of outbound
LSAs on specific OSPF interfaces, use the ip ospf database-filter all out command.(Refer to the Brocade FastIron Command
Reference for details.)
The following example assigns a loopback interface to an area with the IP address of 10.5.0.0.
device# configure terminal
device(config)# interface loopback 2
device(config-lbif-2)# ip ospf area 10.5.0.0
Configuring virtual links
If an Area Border Router (ABR) does not have a physical link to a backbone area, a virtual link can be configured between that ABR and
another device within the same area that has a physical link to a backbone area.
A virtual link is configured, and a virtual link endpoint on two devices, ABR1 and ABR2, is defined.
1. On ABR1, enter the configure terminal command to access global configuration mode.
device# configure terminal
2. Enter the router ospf command to enter OSPF router configuration mode and enable OSPFv2 on the device.
device(config)# router ospf
3. Enter the area command to assign an OSPFv2 area ID.
device(config-ospf-router)# area 0
4. Enter the area command to assign an OSPFv2 area ID.
device(config-ospf-router)# area 1
5. Enter the area virtual-link command and the ID of the OSPFv2 device at the remote end of the virtual link to configure the
virtual link endpoint.
device(config-ospf-router)# area 1 virtual-link 10.2.2.2
Configuring OSPFv2
Brocade FastIron Layer 3 Routing Configuration Guide
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