Re: RE: ISDN Backup With Dialer Watch

From: Carlos (cchorao@xtra.co.nz)
Date: Sun Jan 05 2003 - 05:55:35 GMT-3


Agree. To ensure this is set the dialer idle-timeout to 0 on the non dialer
watch side.

Carlos
Telecom New Zealand - Advanced Solutions Group : Network Design and Security
----- Original Message -----
From: "Tim Fletcher" <tim@fletchmail.net>
To: "stefan vogt" <stefan-uwe_vogt@web.de>; <ccielab@groupstudy.com>
Sent: Friday, January 03, 2003 10:37 AM
Subject: Re: RE: ISDN Backup With Dialer Watch

> Stefan,
>
> You're absolutely correct. The problem is that only one side is configured
> for dialer watch. Since the other side is not configured for dialer watch
> it will time out and disconnect. The dialer watch side will then dialup
the
> connection again, leading to the bouncing scenario described in the
> original post.
>
> -Tim Fletcher
>
> At 09:51 PM 1/2/2003 +0100, stefan vogt wrote:
> >Hi all,
> >
> >I would say that it's not normal with dialer watch that the expiration of
> >the dialer idle-timeout timer brings down the circuit (if the primary is
> >down). For my understanding with dialer watch every time the dialer
> >idle-timeout timer expires it is checked whether the primary link is up.
> >
> >See at
>
>http://www.cisco.com/en/US/tech/tk801/tk133/technologies_tech_note09186a008
009457d.shtml#dw_operation
> >in section Dialer Watch Operation:
> >---snip---
> >Since the router uses the interesting traffic definition ONLY to check
> >whether the primary link is active, consider making all IP traffic
> >uninteresting using the command dialer-list number protocol ip deny. With
> >this interesting traffic definition, the idle timeout will never be
reset,
> >and the router will check the status of the primary link at the specified
> >interval.
> >---snap---
> >
> >Other behavior I think is a bug.
> >In the same document:
> >---snip---
> >Note: It is recommenced that you use Cisco IOS Software Release12.1(7) or
> >higher, which includes fixes for IOS bugs that affect dialer watch.
> >---snap---
> >
> >Best regards,
> >Stefan
> >
> >"Brian T. Albert" <brian.albert@worldnet.att.net> schrieb am 02.01.03
> >18:27:19:
> > > The dialer idle-timeout will bring down the circuit, this is normal.
You
> > > have to crank it way up to prevent this from happening and let the
> > > re-appearance of the route bring it down.
> > >
> > > Brian T. Albert
> > > CCIE #9682
> > > brian.albert@worldnet.att.net
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > > Evgeny Tantsura
> > > Sent: Thursday, January 02, 2003 9:04 AM
> > > To: ccielab@groupstudy.com
> > > Subject: ISDN Backup With Dialer Watch
> > >
> > >
> > > Hi,
> > >
> > > My ISDN interface with Dialer Watch on it
> > > is going down every idle-timeout and then dialing again.
> > >
> > > interface Dialer1
> > > ip address 1.1.1.2 255.255.255.0
> > > encapsulation ppp
> > > ip ospf demand-circuit
> > > dialer pool 1
> > > dialer idle-timeout 180
> > > dialer string 0496406937
> > > dialer load-threshold 127 either
> > > dialer watch-group 1
> > > dialer-group 1
> > > pulse-time 0
> > > no cdp enable
> > > ppp authentication chap
> > > ppp multilink
> > > end
> > >
> > > access-list 170 deny ospf any any
> > > access-list 170 permit ip any any
> > > dialer watch-list 1 ip 192.168.5.1 255.255.255.255
> > > dialer-list 1 protocol ip list 170
> > > ----------------------------------------------------
> > >
> > > interface Dialer1
> > > ip address 1.1.1.1 255.255.255.0
> > > encapsulation ppp
> > > dialer pool 1
> > > dialer idle-timeout 180
> > > dialer load-threshold 50 either
> > > dialer-group 1
> > > no cdp enable
> > > ppp authentication chap
> > >
> > > dialer-list 1 protocol ip permit
> > >
> > >
> > > According to CCO it should stay connected until the router gets the
> > > route via primery interface.
> > >
> > > Any idea's ?
> > >
> > > With kind regards/ met vriendelijke groeten,
> > > ------------------------------------------------
> > > E. Tantsura
> > > Network Developer
> > > Essent Kabelcom N.V.
> > > Dr.van Deenweg 84
> > > 8025BN Zwolle, The Netherlands
> > > Tel: +31-(0)38-850-7642
> > > Fax: +31-(0)38-850-7410
> > > Mob: +31-(0)6-290-80458
> > > ------------------------------------------------
> > > .
> > > .
>
>___________________________________________________________________________
___
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> >nur noch wenige Tage zu haben! http://premiere.web.de/?mc=999927&lp=2
> >.
> .
.



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