Vikas,

  There are three rules that applicable
  to your question. Note these rules
  are not tied with your topology example
  but instead are general in nature.

  1) The IP address on a point-to-point link
     is optional, i.e., a point-to-point may
     either be a numbered link or an unnumbered
     link for OSPF to operate.

  2) As an IP router, there requires at least
     one interface with IP address assigned.

  3) The OSPF Router ID is by default one of
     the IP addresses that configured on the
     router.

  These three rules need to be applied to your
  question/topology collectively.

Dean

-----Original Message-----
From: Vikas B. Wadhwani [mailto:wvikasYAHOO.COM]
Sent: Monday, July 09, 2001 12:20 PM
To: OSPFDISCUSS.MICROSOFT.COM
Subject: To numbered or unnumbered

Hello all,
Below is a network of routers to be configured as an
area.It is an independant network and all the nodes
are routers as well as hosts. They originate traffic,
which means they are a source and sink of traffic and
they also forward traffic i.e, behave as routers.The
routers run the OSPF protocol.I want to know whether
the point to point links between them should be
numbered or unnumbered and why.What is the router id
of the node in either case?
Thanks,
-Vikas

      0---------0---------0---------0------------0
      \ / \ / /
       \ / \ / /
        \ / \ / /
         \ / \ / /
          \0---------0 0------------0
                      \ /
                       \ /
                        \0---------------0

=====

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