From: ccie2be (ccie2be@nyc.rr.com)
Date: Tue Aug 12 2003 - 22:47:45 GMT-3
RE: dialer-watch configHi Danny,
Did you try the partial mesh f/r scenario below. It sounds like dialer watch
won't work the way I had hoped. The multiple dialer map statements ( 1 for
each watched route) make sense if you want different destinations dialed.
But, it seems like if you have a multipoint f/r interface and you lose just
one pvc to a spoke router, you won't lose all the routes being watched - just
the routes from that 1 spoke router. And, according to Brian Dennis, "If
there is at least one of the watched routes in the routing table not learned
by the backup interface the dialer watch feature will not trigger a call".
So, I'm still not sure how to configure dialer watch for the scenario below.
If you've got some suggestions, please dont hold back. Thank, dt
----- Original Message -----
From: Danny.Andaluz@triaton-na.com
To: rshummoo@ca.ibm.com ; ccie2be@nyc.rr.com
Cc: ccielab@groupstudy.com
Sent: Tuesday, August 12, 2003 9:02 PM
Subject: RE: dialer-watch config
Hi, dt. I've actually used dialer-watch without dialer-map statements for
the watched routes. Try it. I'm not exactly sure why the dialer-map is used
in some scenarios, but I got it to work correctly without them. Let me know
how it works for you if you try it.
Danny
-----Original Message-----
From: Ram Shummoogum [mailto:rshummoo@ca.ibm.com]
Sent: Tuesday, August 12, 2003 7:51 PM
To: ccie2be@nyc.rr.com
Cc: ccielab@groupstudy.com
Subject: Re: dialer-watch config
Read this link and follow the explanations from Brian Dennis:
http://www.groupstudy.com/archives/ccielab/200307/msg00115.html
HTH
"ccie2be" <ccie2be@nyc.rr.com>@groupstudy.com on 08/12/2003 07:12:35 PM
Please respond to "ccie2be" <ccie2be@nyc.rr.com>
Sent by: nobody@groupstudy.com
To: "Group Study" <ccielab@groupstudy.com>, Ram
Shummoogum/Quebec/IBM@IBMCA
cc:
Subject: Re: dialer-watch config
Hi,
Thanks for getting back to me. I found an example of what you were saying
at this link:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/dial_
c/dcdbakdw.htm
In this example, there are 3 routes listed in the dialer watch-list,
3.x.x.x, 4.x.x.x, and 5.x.x.x but there's only 2 dialer map statements - 1
for the ip addr of the other side of the dialup link and 1 for 3.x.x.x
But, this is what I don't really understand. Why the dialer map for 3.x.x.x
and not either 4.x.x.x or 5.x.x.x ?
Would it work just as well if nets 4.x.x.x or 5.x.x.x were used instead or
did it have to be 3.x.x.x ?
Also, I have another topology I'm wondering about.
Suppose you have Frame Relay hub and spoke topology where r1 is the hub and
is using a multipoint interface to reach r2, r3 and r4. All the routers have
bri interfaces and I want to have r1 using dialer watch call any of the 3
spokes if their f/r interface goes down. Assume each spoke router has a
loopback interface such as 2.x.x.x, 3.x.x.x, and 4.x.x.x and these are
exchanged via the routing protocol.
In other words, I want r1 to call r2 if 2.x.x.x is no longer in the route
table or call r3 if 3.x.x.x is no longer in the route table or call r4 if
4.x.x.x is no longer in the route table. In this case, do I need 3 dialer map
statements - 1 pointing to each of the spoke routers? And, are there any
other things I need to do to make this work?
Thank you so much. dt
----- Original Message -----
From: "Ram Shummoogum" <rshummoo@ca.ibm.com>
To: <ccie2be@nyc.rr.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, August 12, 2003 6:25 PM
Subject: Re: dialer-watch config
> There is no need to have all watched routes in the dialer map
> statements. However, the watched list must cover all the watch routes.
> The line will be triggered only after all the routes disappeared from
> the routing table. I have teste this already.
>
> "ccie2be" <ccie2be@nyc.rr.com>@groupstudy.com on 08/12/2003 05:53:45
> PM
>
> Please respond to "ccie2be" <ccie2be@nyc.rr.com>
>
> Sent by: nobody@groupstudy.com
>
>
> To: "Group Study" <ccielab@groupstudy.com>
> cc:
> Subject: dialer-watch config
>
>
> Hi all,
>
> In the following example, there's a dialer map for the watched route.
See
> http://www.cisco.com/warp/public/129/bri-backup-map-watch.html
>
>
> Does this mean that for every route being watched, one dialer map
statement
> is
> required?
>
> If so, that seems redundant, doesn't it? You have to create a dialer
> watch-list where each route to be watched is listed. And, then you
> have
to
> create a dialer map statement for each watched route. Why is that?
>
> Thanks, dt
>
>
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