From: Kay Olateru (kolateru@xxxxxxxxx)
Date: Fri Feb 02 2001 - 12:30:21 GMT-3
Thanks Frank. The problem with using multiple dialer strings per dialer
interface is that the router has no way of determining which dial string to
use to connect to a specific IP address.
Regards
Kay
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Frank Liang
> Sent: 02 February 2001 14:40
> To: kolateru@cisco.com; ccielab@groupstudy.com
> Subject: Re: Dial Backup
>
>
> Kay,
>
> Most of the data centre modems like Motorola 3266 support leased line as
> well as dial backup. You can configure it to dial multiple
> destinations. If
> the first destination fail to establish the connection, it will try the
> second one then third one and so on.
>
> In the Cisco router, let say s0 is leased line, dialer1 is DDR
> backup. You
> can use backup int di1 under int s0 and set up two dialer strings
> for site B
> and site C under int di1.
>
> will this achieve what you are trying to do?
>
> Frank
>
>
> >From: "Kay Olateru" <kolateru@cisco.com>
> >Reply-To: "Kay Olateru" <kolateru@cisco.com>
> >To: <ccielab@groupstudy.com>
> >Subject: Dial Backup
> >Date: Fri, 2 Feb 2001 13:47:36 -0000
> >
> >All,
> >
> >Apologies if this does not fall within the CCIE Lab exam,
> however, I would
> >like to confirm whether the solution I am thinking is right.
> >
> >Problem:
> >I want to backup a leased line failure between site A and
> B(failure meaning
> >all routes to B have been lost), to first dial site B and if this fails
> >then
> >dial a second site C on a different subnet. How can you dial the second
> >site
> >automatically after the first dial backup has failed.
> >
> >Solution???
> >Use the normal dial backup with DDR to back up the leased line, and then
> >use
> >floating static route (with higher administrative distance of
> course!) with
> >DDR to dial Site C. I presume that this will only work if there
> is no route
> >entries on A for site B, but the only viable route will be via C - the
> >floating static route.
> >
> >Has anybody tried this before or have I missed something
> completely basic??
> >
> >
> >Regards
> >
> >
> >Kay. S. Olateru (Mr)
> >Systems Engineer, CCDP
> >Network Service Providers - Western Europe
> >ISP1
> >Cisco Systems, EMEA
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