Re: [nsp] Router ID

From: sthaug@nethelp.no
Date: Fri Mar 29 2002 - 15:11:47 EST

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> I have a router will the following interface addresses:
>
> 192.168.2.1/24
> 172.16.11.1/24
> 10.0.3.200/24
>
> I configured OSPF, and the Router ID is 10.0.3.200. The documents
> say that Router ID is the highest interface IP address. How
> does 10.0.3.200 turn out to be the highest interface IP ?

A couple of possibilities:

If 10.0.3.200/24 is the loopback interface, it will be chosen as OSPF
router ID.

Also, if initially only 10.0.3.200/24 was up when OSPF was configured,
the router ID won't change if other interfaces come up later.

Steinar Haug, Nethelp consulting, sthaug@nethelp.no

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