Avaya Configuring IP, ARP, RARP, RIP, and OSPF Services Instrukcja Użytkownika Pobierz pdf (Strona 188)

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Configuring IP, ARP, RARP, RIP, and OSPF Services

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Supplying an OSPF Router ID

Each router configured with OSPF has an OSPF router ID. This 32-bit value

uniquely identifies this router in the OSPF domain. By convention, and to ensure

uniqueness, use one of the router’s IP interface addresses for the router ID.

In conjunction with the router priority, the router ID determines the designated

router on a broadcast link. If the priority values of the routers being considered are

equal, then the router with the higher router ID is selected.

By default, OSPF uses as the router ID the IP address of the first OSPF interface

configured on this router.

Using the BCC

To change the OSPF router ID, go to the global OSPF prompt (for example,

box;

ip; ospf

) and enter:

router-id

<value>

value

is a 32-bit value in dotted-decimal notation.

For example, the following command specifies IP address 2.2.2.2 for the OSPF

router ID:

ospf#

router-id 2.2.2.2

ospf#

Note:

If both OSPF and BGP are running on the router, the OSPF router ID

and the BGP ID must be identical. In addition, the OSPF router ID must match

one of the IP addresses configured on the router.

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