Configuration Guide User guide

1248 FastIron Configuration Guide
53-1002494-01
Configuring OSPF
NOTE
When you establish an area virtual link, you must configure it on both of the routers (both ends of
the virtual link).
FIGURE 163 Defining OSPF virtual links within a network
Example
Figure 163 shows an OSPF area border router, FastIronA, that is cut off from the backbone area
(area 0). To provide backbone access to FastIronA, you can add a virtual link between FastIronA
and FastIronC 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 FastIronA, enter the following commands.
BrocadeA(config-ospf-router)#area 1 virtual-link 209.157.22.1
BrocadeA(config-ospf-router)#write memory
Enter the following commands to configure the virtual link on FastIronC.
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>]
OSPF Area 0
OSPF Area 1
“transit area”
OSPF Area 2
Router ID 209.157.22.1
Router ID 10.0.0.1
FastIronC
FastIronB
FastIronA