Configuring Ospf Areas - HP procurve 8100fl series Management And Configuration Manual

OSPF Configuration
Configuring OSPF Router Parameters
N o t e
13-6
If there are no addresses on the loopback interface, the switch will set the
■
default router ID to the address of the first interface that is in the up state
that the switch encounters (except the interface management0, which is
the Management Module's interface). The address of a non point-to-point
interface is preferred over the local address of a point-to-point interface.
■ If the router ID is implicitly chosen to be the address of a non-loopback
interface, and if that interface were to go down, then the router ID is
changed.
If you change the router ID (by using the clear ip ospf <process ID>
■
command, an OSPF router has to flush all its LSAs from the routing
domain.
■ If you explicitly specify a router ID, and if all the interfaces were to go
down, the router ID would not change.

Configuring OSPF Areas

On the switch, you can create multiple OSPF areas, but at least one of them
should be an area backbone for the router to function as an Area Border
Router (ABR).
To configure a backbone area, set the area parameter to 0.
ProCurve(config-router)#area 0
The area parameter for a backbone area can also be set to 0.0.0.0.
To configure an OSPF area, including a stub area or an NSSA, you must first
create an area by entering the following command:
ProCurve(config-router)#area <area ID>
where area ID is the OSPF area ID in decimal or in IP address format. After
you create an area, the prompt will change so that you can set various OSPF
area parameters.
ProCurve(config-ospf-area)#