From: YourPal (dearprudence28@gmail.com)
Date: Wed Jan 16 2008 - 04:22:31 ARST
Hi Joe,
I have used this Reliable Static Routing Backup Using Object Tracking
feature before. I have the following config:
!
ip sla monitor 1
type echo protocol ipIcmpEcho 150.1.1.1 source-ipaddr 150.1.6.6
timeout 1000
frequency 2
ip sla monitor schedule 1 life forever start-time now
!
track 1 rtr 1
!
ip route 172.16.1.0 255.255.255.0 1.1.1.1 track 1
!
My understanding is, as soon as one ping fails, the track object will go
down. What I want is, at least a few consecutive pings time out before it
goes down.
How to achieve this? Using the "delay" command under the track object?
Appreciate if you can provide a sample config.
Thank you.
BR,
Emil
On 1/8/08, Joseph Brunner <joe@affirmedsystems.com> wrote:
>
> By default static routes only "fail" if the interface loose line protocol
> or
> link (layer 2 and 1 respectively).
>
> You need to learn to use IP SLA to reliably track static routes with a
> ping,
> so they can see beyond the directly connected / next hop interface for
> reliability reasons.
>
> That being said, check out General Scott Morris's excellent post on
> tcpmag.com on using sla's to track static routes.
>
> -Joe
>
> http://tcpmag.com/qanda/article.asp?EditorialsID=348
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> john
> white
> Sent: Monday, January 07, 2008 10:40 AM
> To: ccielab@groupstudy.com
> Subject: EIGRP and Static Routing failover
>
> Hi All,
>
> I have a router A that connects to Router B and Router C. Router B in turn
> connects to another Router D. Router C also connects to Router D but via
> another router X.
>
> Hence there are 2 paths on the network from router A to router D
>
> i.e Path1: A ----- B -------- D and Path 2: A -------- C -------X
> -------D
>
>
> Path 1 has EIGRP configured all the way for all networks i.e Router A runs
> Eigrp with router B which also runs eigrp with router D
>
> Path 2 has static routing configured all the way for all networks
>
>
> Routing works perfectly fine with both of them independently .
>
> But I need to have them function in automatic failover mode. I.e. once the
> static route fails, the EIGRP-learned route should kick in without manual
> intervention.
>
>
> Right now, if there is a failure between Router C and Router X, the EIGRP
> learned route to Router D's loopback does not kick in and so I loose
> connectivity from Router A to Router D's loopback because the static route
> is still in the routing table cause of its lower AD until I manually
> intervene but I need the failover to be automated.
>
> Which solutions can i use to achieve this automatic failover? I am
> preparing for my CCIE lab.
> Thanks
>
> BR
>
> John White
>
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