RE: ospf demand-circuit and interesting traffic

From: Vijay Ramcharan (vramcharan@thedeal.com)
Date: Tue May 31 2005 - 12:22:30 GMT-3


I have found this not to be true. I also thought that it would be
logical that the router should know that it's initiating a call due to a
route loss and so should not require interesting traffic. I've seen
that when the route disappears the call never occurs.
I believe I observed this behavior using "debug dialer" and "debug
dialer packets". You should see an indication that the router's
attempts to bring up the interface fail because the packets for the
watch-group are not interesting.

Vijay Ramcharan

-----Original Message-----
From: Chad Hintz [mailto:ccie_2b2004@yahoo.com]
Sent: 31 May, 2005 11:16
To: Vijay Ramcharan; Roy Dempsey; Cisco certification
Subject: RE: ospf demand-circuit and interesting traffic

Well not exactly with dialer-watch if the route is watched that is your
interesting traffic so no dialer-group is need on either side, because
it will dial when the route is lossed and keep the line up by refreshing
the idle timeout everytime it checks to see if the route is still lost.
For ospf demand circuit you do need a dialer group/list though.

HTH,

Chad

Vijay Ramcharan <vramcharan@thedeal.com> wrote:

        Except for the "dialer persistent" option for dialer interfaces
which
        doesn't require you to define interesting traffic, ALL
configurations
        involving ISDN require configuration of an "interesting traffic"
list.

        Vijay Ramcharan

        -----Original Message-----
        From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf Of
        Roy Dempsey
        Sent: 31 May, 2005 10:55
        To: Cisco certification
        Subject: ospf demand-circuit and interesting traffic

        Probably a dumb question, but if you configure an ISDN link as
an OSPF
        demand-circuit, does this bring up the ciruit regardless of
whats in
        the dialer-list. Or should you include it in the dialer-list
also.

        I didn't think it needed to be specified, but I'm not sure, and
can't
        check it.

        --
        Regards,
        Roy



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