PowerConnect B-Series FCX Configuration Guide 943
53-1002266-01
Configuring OSPF
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By default, the Dell router ID is the IP address configured on the lowest numbered loopback
interface. If the Layer 3 Switch does not have a loopback interface, the default router ID is the lowest
numbered IP address configured on the device. For more information or to change the router ID,
refer to “Changing the router ID” on page 809.
When you establish an area virtual link, you must configure it on both of the routers (both ends of
the virtual link).
FIGURE 143 Defining OSPF virtual links within a network
Example
Figure 143 shows an OSPF area border router, PowerConnect A, that is cut off from the backbone
area (area 0). To provide backbone access to PowerConnect A, you can add a virtual link between
PowerConnect A and PowerConnect C 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 PowerConnect A, enter the following commands.
PowerConnectA(config-ospf-router)#area 1 virtual-link 209.157.22.1
PowerConnectA(config-ospf-router)#write memory
Enter the following commands to configure the virtual link on PowerConnect C.
OSPF Area 0
OSPF Area 1
“transit area”
OSPF Area 2
Router ID 209.157.22.1
Router ID 10.0.0.1
DeviceC
DeviceB
DeviceA
