3Com 5500-EI PWR Install Manual page 300

packet exchange between an OSPF process and other routers. Therefore, packets can be exchanged
between routers with different OSPF processes IDs.
Configuring an area and the network segments in the area. You need to plan areas in an AS before
performing the corresponding configurations on each router.
When configuring the routers in the same area, please note that most configurations should be
uniformly made based on the area. Wrong configuration may disable information transmission between
neighboring routers and even lead to congestion or self-loop of routing information.
Follow these steps to perform basic OSPF configurations:
To do...
Enter system view
Configure the router ID
Enable OSPF and enter
OSPF view
Enter OSPF area view
Configure the network
segments in the area
In router ID selection, the priorities of the router IDs configured with the ospf [ process-id
[ router-id router-id ] ] command, the router id command, and the priorities of the router IDs
automatically selected are in a descending order.
Router IDs can be re-selected. A re-selected router ID takes effect only after the OSPF process is
restarted.
The ospf [ process-id [ router-id router-id ] ] command is recommended for configuring router IDs
manually.
An OSPF process ID on a router must be unique.
One segment can belong to only one area and you must specify each OSPF interface to belong to
a particular area.
Use the command...
system-view
router id router-id
ospf [ process-id
[ router-id router-id ] ]
area area-id
network ip-address
wildcard-mask
4-14
Remarks
—
Optional
If multiple OSPF processes run on a
router, you are recommended to use
the router-id keyword in the ospf
command to specify different router
IDs for different processes.
Required
Enter OSPF view.
—
Required
By default, an interface does not
belong to any area.