[c-nsp] Verify static route next hop

[David Prall]

IP SLA isn't supported in IP BASE except as a responder. Will have to go to
IP Services at a minimum for IP SLA support how you need it.

David

--
http://dcp.dcptech.com
  

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Kevin Barrass
> Sent: Friday, October 05, 2007 2:51 AM
> To: Adrian Chadd
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Verify static route next hop
> 
> 
>  
> Hi
> 
> Cheers for the below iam testing this out now unfortunatly the routers
> and IOS we are using Cisco 2851 12.4(15)T1 BASE IP does not 
> support the
> track command "track n rtr 1 reachability".
> I have checked our IOS release and according to Cisco Feature 
> Navigator
> this feature should be supported. But issueing the command track 123 ?
> Gives the below options:
> 
> (config)#track 123 ?
>   interface    Select an interface to track
>   ip           IP protocol
>   list         Group objects in a list
>   stub-object  Stub tracking object
>   <cr>
> 
> 
> Kind Regards
> 
> Kev
> 
> -----Original Message-----
> From: Adrian Chadd [mailto:adrian at creative.net.au] 
> Sent: 05 October 2007 07:13
> To: Kevin Barrass
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Verify static route next hop
> 
> What you want is "Reliable Static Routing Backup Using Object 
> Tracking"
> 
> http://www.cisco.com/en/US/products/sw/iosswrel/ps5413/product
> s_feature_
> guide09186a00801d862d.html
> 
> * setup an SLA to ICMP ECHO ping an IP
> * setup a "tracking object" to track an SLA entry
> * setup a default route to only trigger when that "tracking object" is
> active
> 
> Works a treat. Remember that ICMP ECHO to a connected interface might
> succeed if the connected interface goes down and you can 
> reach the other
> end via another path. Use source interfaces in your SLA IpIcmpEcho
> entries and you should be fine.
> 
> Adrian
> 
> 
> On Fri, Oct 05, 2007, Kevin Barrass wrote:
> >  
> > Hi
> > 
> > Iam looking into a problem where we have no option other 
> than to use 
> > static routes for political reasons ;0) Unfortunatly our 
> core network 
> > between layer 3 devices is a switched ethernet backbone.
> > 
> > The problem we have is that if a next hop of a static route 
> goes down 
> > the static route stays valid as the outgoing interface to 
> the next hop
> 
> > is up.
> > 
> > I was told that using the command "ip route static 
> adjust-time" there 
> > is some internal feature in IOS that checks the availability of the 
> > next hop IP address but in testing this does not work. Can anyone 
> > advise if I have miss read the below document.
> > 
> > 
> http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/products_featur
> > e_
> > guide09186a00802801fe.html
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