From: FATHALLAH (sfathallah@mail.cbi.net.ma)
Date: Wed Jun 04 2003 - 14:52:27 GMT-3
as you said The dialer watch look what is in the routing table. and as you
know the routing table don't know what that's it mean virtual link.
-----Message d'origine-----
De?: nobody@groupstudy.com [mailto:nobody@groupstudy.com]De la part de
Ciscolab
Envoy(&?: mercredi 4 juin 2003 05:00
($?: ccielab@groupstudy.com; brian@ipexpert.net
Objet?: OSPF Virtual Link and Dialer-watch
ccielabHello, Brian and Group,
Thanks for your help, I have a question about the virtual-link and
dialer-watch.
I saw below messages from cisco website.
----------------------------------------------------------------------------
-----------------------------------
When a watched route is deleted, dialer watch checks for at least one valid
route for any of the IP
addresses or networks being watched.
!'
A. If there is no valid route, the primary line is considered down and
unusable.
Dialer watch then initiates the call, and the routers connect and
exchange routing
information. All traffic for the remote network will now use the
backup link.
!'
B. If there is a valid route for at least one of the watched IP networks
defined and the route is
pointing to an interface other than the backup interface configured for
dialer watch, the
primary link is considered up and dialer watch does not initiate the backup
link.
----------------------------------------------------------------------------
----------------------------------------------For the point B, if I
received the watched route from OSPF virtual-link, but the virtual-link is
built base on the backup ISDN link, the watched route is pointing the
backup interface in routing table. In this senario, Does the dialer-watch
consider the primary link up???
!!!!!!!!!!!!!!!!Ciscolab
!!!!!!!!!!!!!!!!ciscolab@vip.sina.com
!!!!!!!!!!!!!!!!!!!!2003-06-04
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