[nsp] Proper way of doing dial backup for an ethernet(DSL) link

[Brad Bonin (bbonin)]

Ospf demand would work...if the ospf neighbor goes down on the Ethernet
interface, then ospf would reconverge, force the ospf demand circuit to
come up and exchange new routing information....which would cause routes
to be preferred over the backup circuit as this circuit is the only
valid path now...

Give it a shot....if you are running ospf that is.

-----Original Message-----
From: Ezequiel Carson [mailto:ezequiel@ifxnw.com.ar] 
Sent: Friday, August 02, 2002 9:30 AM
To: brad@cisco.com
Cc: 'Krzysztof Adamski'; 'Josh Duffek'; cisco-nsp@puck.nether.net
Subject: RE: [nsp] Proper way of doing dial backup for an ethernet(DSL)
link


i have used  DDR on Serials and when the primary serial is down, the 0/0
is removed from FIB and then,  0/0 poiting to ASYC interface takes place
in the FIB.

But i think that this is not possible if the eth0 never go down :)

so we need a keepalive method. :)


On Fri, 2002-08-02 at 11:30, Brad Bonin (bbonin) wrote:
> Sounds like a question I had on my ccie exam a few years back.
> 
> The trick was to use an ospf demand circuit over the backup 
> connection....
> 
> Or you could use another routing protocol and dink around with Admin 
> Distances....
> 
> brad
> 
> -----Original Message-----
> From: cisco-nsp-admin@puck.nether.net 
> [mailto:cisco-nsp-admin@puck.nether.net] On Behalf Of Ezequiel Carson
> Sent: Friday, August 02, 2002 6:52 AM
> To: Krzysztof Adamski
> Cc: Josh Duffek; cisco-nsp@puck.nether.net
> Subject: Re: [nsp] Proper way of doing dial backup for an 
> ethernet(DSL) link
> 
> 
> If your eth0 will never go down, the floating route will not work. so 
> me be is better to use a simple and FAST routing protocol. (we should 
> reconfigure protocolo's time)
> 
> 
> 
> On Thu, 2002-08-01 at 22:29, Krzysztof Adamski wrote:
> > What I'm asking is, from all the possible ways that are now 
> > available,
> 
> > what is it best way? Running BGP, is this a good thing, or would RIP
> > be better, or OSPF? Or should I use DDR?
> > 
> > K
> > 
> >  On Thu, 1 Aug 2002, Josh Duffek wrote:
> > 
> > > There is no real way to do this right now, without some dynamic
> > > routing/floating statics(or dialer watch).  There is a feature 
> > > request bug for what you want though...CSCds88143...someone is 
> > > working on it right now.
> > > 
> > > josh
> > > 
> > > ----- Original Message -----
> > > From: "Krzysztof Adamski" <k@adamski.org>
> > > To: <cisco-nsp@puck.nether.net>
> > > Sent: Thursday, August 01, 2002 4:15 PM
> > > Subject: [nsp] Proper way of doing dial backup for an 
> > > ethernet(DSL)
> > > link
> > > 
> > > 
> > > > I have a DSL link that is terminated as an Ethernet connection, 
> > > > I
> > > > would like to setup a dialup failover for it. Since it is an 
> > > > Ethernet I can't watch the physical interface. I have a cisco
1721
> 
> > > > on the remote end.
> > > >
> > > > One way is to run BGP between the two points and then to "watch"

> > > > a
> 
> > > > route.
> > > >
> > > > But what is the best way of doing this, I have full control of
> > > > both ends, but at the same time I want to protect the central 
> > > > point from the remote.
> > > >
> > > > K
> > > >
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> > 
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> 
> 
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