RE: OSPF Virtual Link question

From: Chuck Larrieu (chuck@xxxxxxxxxxxxx)
Date: Thu Aug 16 2001 - 20:56:39 GMT-3


   
it operates as a point to point link. why? because the RFC says so. :->

from RFC 2328:

    The virtual link is treated as if it were an unnumbered point-to-
    point network belonging to the backbone and joining the two area
    border routers. An attempt is made to establish an adjacency over
    the virtual link. When this adjacency is established, the virtual
    link will be included in backbone router-LSAs, and OSPF packets
    pertaining to the backbone area will flow over the adjacency. Such
    an adjacency has been referred to in this document as a "virtual
    adjacency".

the cost of the link is the sum of the costs of the links across the transit
area.
for the real low down check out ftp://ftp.isi.edu/in-notes/rfc2328.txt

HTH

Chuck

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
sanjay
Sent: Thursday, August 16, 2001 4:41 PM
To: ccielab@groupstudy.com
Subject: OSPF Virtual Link question

Does the virtual link run as a demand circuit and why ?

-sanjay
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