134 CHAPTER 6: IP ROUTING PROTOCOL OPERATION
Entering OSPF Area View
Perform the following configurations in OSPF View.
area_id
is the ID of the OSPF area, which can be a decimal integer or in IP
address format.
Specifying the Interface
OSPF divides the AS into different areas. You must configure each OSPF interface
to belong to a particular area, identified by an area ID. The areas transfer routing
information between them through the ABRs.
In addition, parameters of all the routers in the same area should be identical.
Therefore, when configuring the routers in the same area, please note that most
configurations should be based on the area. An incorrect configuration can disable
the neighboring routers from transmitting information, and lead to congestion or
self-loop of the routing information.
Perform the following configuration in OSPF Area View.
You must specify the segment to which the OSPF will be applied after enabling
OSPF.
ip-mask
can be IP address mask or IP address wildcard shielded text (similar to the
complement of the IP address mask).
Configuring a Router ID
A Router ID is a 32-bit unsigned integer that uniquely identifies a router within an
AS. A Router ID can be configured manually. If a Router ID is not configured, the
system selects the IP address of an interface automatically. When you set a Router
ID manually, you must guarantee that the IDs of any two routers in the AS are
unique. It is usual to set the router ID to be the IP address of an interface on the
router.
Perform the following configurations in System View.
Table 132 Entering OSPF Area View
Operation Command
Enter an OSPF Area View area
area_id
Delete a designated OSPF area undo area
area_id
Table 133 Specifying interface
Operation Command
Specify an interface to run OSPF network
ip_address
ip_mask
Disable OSPF on the interface undo network
ip_address
ip_mask
Table 134 Configuring a router ID
Operation Command
Configure a Router ID router id
router_id
Remove the router ID undo router id
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