From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Mon Jul 04 2005 - 12:01:54 GMT-3
Thanks, Brian! This is good information. At first, I was thinking that the
dialer idle-timeout only related to interesting traffic (not routes in the
watch list). After digging further in the doc cd, I found this
statement.....
dialer idle-timeout 30
!Idle timeout(in seconds)for this backup link.
!Dialer watch checks the status of the primary link every time the
!idle-timeout expires.
dialer watch-disable 15
!Delays disconnecting the backup interface for 15 seconds after the
!primary interface is found to be up.
Thanks,
Dave
-----Original Message-----
From: Brian Dennis
To: Schulz, Dave; Scott Morris ; 'ccie2be ' ; ccielab@groupstudy.com
Sent: 7/4/2005 3:09 AM
Subject: RE: Dialer Watch and Dialer Profiles
Dave.
Basically when the idle-timeout starts to expire, dialer watch
will wakeup and see if the watched route is back in the routing tabled
learned via an interface other than the interface that is configured
with the dialer watch-group command (aka primary interface). If the
watched route is still not learned via a primary interface, dialer watch
will reset the idle-timeout. So by setting the idle-timeout you are
affecting how often dialer watch checks the routing table for the
watched route to reappear.
This can be verified by using the "debug dialer" command along
with the "show isdn active" command to see when the idle-timeout is
getting ready to expire. Right before it expires, you will see output
from the debug dialer command showing that dialer watch is checking the
routing table for the watched route.
This is demonstrated in our Class-on-Demand product and there
are a couple tasks in our IEWB-RS workbooks that cover this exact topic
(determining how often dialer watch checks the routing table for the
watched route to reappear).
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Schulz, Dave
Sent: Sunday, July 03, 2005 8:44 PM
To: Scott Morris ; 'ccie2be ' ; ccielab@groupstudy.com
Subject: RE: Dialer Watch and Dialer Profiles
Thanks, Scott. Ok...so, let's assume that we have no dialer-group, and
have
only the dialer watch setup. What happens if we have the dialer
idle-timeout
setup? Does the link go down after there is no activity, and then
redial,
because the route is still down? Or, is this command meaningless under
dialer
watch, because only the route matters, not traffic? I would assume the
later.
Any thoughts on this one?
Dave
-----Original Message-----
From: Scott Morris
To: Schulz, Dave; 'ccie2be '; ccielab@groupstudy.com
Sent: 7/3/2005 8:52 AM
Subject: RE: Dialer Watch and Dialer Profiles
Yes. Dialer-watch will work independent of interesting traffic.
If you do not have dialer-group, then only dialer-watch will bring the
line
up. If you do have dialer-group, then either method will bring the line
up.
HTH,
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Schulz, Dave
Sent: Sunday, July 03, 2005 8:08 AM
To: ccie2be ; ccielab@groupstudy.com
Subject: RE: Dialer Watch and Dialer Profiles
Thanks for the explanation. Then, since these are mutually
exclusive...can
I use the watch list without the interesting command statements?
Dave
-----Original Message-----
From: ccie2be
To: Schulz, Dave; ccielab@groupstudy.com
Sent: 7/3/2005 3:27 AM
Subject: RE: Dialer Watch and Dialer Profiles
Dave,
I'm pretty sure that with dialer profiles you just use the dialer
watch-list
command as with legacy DDR. I think the only difference in the config
is
that with dialer profiles, you don't use the dialer map command for the
watched routes.
dialer watch is NOT mutually exclusive with interesting traffic. Either
interesting traffic or a missing route can be the cause of the link
coming
up.
Tim
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Schulz, Dave
Sent: Sunday, July 03, 2005 2:53 AM
To: ccielab@groupstudy.com
Subject: Dialer Watch and Dialer Profiles
2 questions:
1. Is it possible to use dialer watch within dialer profiles? The only
examples on the Doc CD show them under the interface. And, if this is
possible, how do you map it to the specific watch list route?
2. If Dialer watch uses a route (read: absense of a route) to bring up
the
call....then why is it necessary to have a dialer-list/dialer-group for
interesting traffic, since the route controls whether the ISDN link
comes up
or not. Just trying to think like the router.
TIA...for any help on this one.
Dave
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