Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 208)

190 Brocade ICX 6650 Layer 3 Routing Configuration Guide
53-1002603-01
Configuring OSPF
FIGURE 22 Defining OSPF virtual links within a network
Example
Figure 22 shows an OSPF area border router, DeviceA, that is cut off from the backbone area (area
0). To provide backbone access to DeviceA, you can add a virtual link between DeviceA and
DeviceC using area 1 as a transit area. To configure the virtual link, you define the link on the
router that is at each end of the link. No configuration for the virtual link is required on the routers
in the transit area.
To define the virtual link on DeviceA enter the following commands.
BrocadeA(config-ospf-router)#area 1 virtual-link 192.168.22.1
BrocadeA(config-ospf-router)#write memory
Enter the following commands to configure the virtual link on DeviceC.
BrocadeC(config-ospf-router)#area 1 virtual-link 10.0.0.1
BrocadeC(config-ospf-router)#write memory
Syntax: area ip-addr | num virtual-link router-id
[authentication-key | dead-interval | hello-interval | retransmit-interval | transmit-delay
value]
The area ip-addr | num parameter specifies the transit area.
The router-id parameter specifies the router ID of the OSPF router at the remote end of the virtual
link. To display the router ID on a Brocade Layer 3 Switch, enter the show ip command.
OSPF Area 0
OSPF Area 1
“transit area” OSPF Area 2
Router ID 192.168.22.1
Router ID 10.0.0.1
DeviceC
DeviceB DeviceA