From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Sat Jul 29 2006 - 19:30:32 ART
Hi Victor,
Use enhanced object tracking in conjunction with the static
route. Create an IP SLA instance that tracks ICMP Echo reachability to
the far end of the link (R3's Loopback). If the Loopback is unreachable
the static route should be withdrawn. Here's an example:
ip sla monitor 10
type echo protocol ipIcmpEcho 3.3.3.3
timeout 500
frequency 2
ip sla monitor schedule 10 start-time now
!
track 1 rtr 10
!
ip route 0.0.0.0 0.0.0.0 10.0.0.1 track 1
This means that you will ping 3.3.3.3 every 2 seconds. If you
don't get a response within 500 milliseconds the default route to
10.0.0.1 will be withdrawn.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987 x 705
Outside US: 775-826-4344 x 705
24/7 Support: http://forum.internetworkexpert.com
Live Chat: http://www.internetworkexpert.com/chat/
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Victor Cappuccio
> Sent: Saturday, July 29, 2006 5:10 PM
> To: ccielab@groupstudy.com
> Subject: RE: Need a hint for a real world taks.
>
> Ohhh sorry I forgot to say that R2 and R3 are non Cisco, so CDP is not
> available also, in case off thinking of Route-maps with ip next-hop
> values.
>
>
>
> _____
>
> De: Victor Cappuccio [mailto:cvictor@protokolgroup.com]
> Enviado el: Sabado, 29 de Julio de 2006 06:02 p.m.
> Para: 'ccielab@groupstudy.com'
> Asunto: Need a hint for a real world taks.
>
>
>
> Guys,
>
>
>
> What if we have 3 routers connected like in this:
>
>
>
> R1 ==A= Sw1 ==T== Sw2 =A==R2-L0
>
> =A==R3-L0
>
>
>
> A = Access
>
> T = Trunk
>
>
>
> If the ASCII diagram came mess up, R1 connects via Vlan X to Sw1 f0/1,
sw1
> uses f0/13 to trunk with sw2 f0/13, sw2 connects with R2 using f0/2
and
> with
> R3 using f0/3 in Vlan X
>
>
>
> Please note that Im not allowed to use Dynamic Routing for this
scenario
> (real World Taks).
>
>
>
> So, I need to find a way other than using tunnels interfaces to get
rid of
> the static route create at R1, if R2 or R3 Ethernet goes down. Is
there
> anyway you can think to solve this task? The use on tunneling here is
not
> scalable (I think), because you will need more ip addressing from the
> tunnels and more ip routes
>
>
>
> Any hint for this task please?
>
>
>
> Thanks
>
> Victor.
>
>
This archive was generated by hypermail 2.1.4 : Tue Aug 01 2006 - 07:13:48 ART