[c-nsp] 2MBit leased line and dsl backup

Ted Mittelstaedt tedm at toybox.placo.com
Wed Mar 16 04:28:08 EST 2005



> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net]On Behalf Of Matthew Crocker
> Sent: Tuesday, March 15, 2005 8:36 AM
> To: Florian Taeger
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 2MBit leased line and dsl backup
> 
> 
> 
> Florian
> 
>   It depends on how you are doing your DSL.  If you are using 
> PPPoE with 
> a Dialer you could do something like
> 
> ip route 0.0.0.0 0.0.0.0 Serial0
> ip route 0.0.0.0 0.0.0.0 Dialer0 200
> 
> Then type 'show ip route' and you should only see the serial route.   

That won't work if his other condition "next-hop is unreachable" is met,
as long as the serial interface is up packets will go merrily off to
the bit bucket, even if the next hop router is dead.

The correct way is to have the DSL line and the serial line go to the
same ISP and run a routing protocol on them.

Ted


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