[c-nsp] BFD + static routes (object tracking?)

Pekka Savola pekkas at netcore.fi
Tue Aug 7 02:14:20 EDT 2007


Hi,

Sorry for hijacking this thread -- but I wonder if BFD + static routes 
(with or without object tracking) is still unimplemented?

Given that you'll also need to bring down the routes on the other 
side, IP SLA + object tracking isn't as useful in many scenarios..

On Mon, 6 Aug 2007, Gert Doering wrote:
> I have a question regarding "reliable static routing backup using object
> tracking" - see this URL
>
> http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps5413/products_feature_guide09186a00801d862d.html
>
> basically this stuff ("ip sla" plus "track") does what we want.
>
> What I can't seem to find a way to configure is:
>
>  - only switch state in the track object if <x> consecutive pings fail
>
> (like "ping every 5 seconds, fail over if 3 pings go unanswered").
>
> We plan to do this on SDSL lines, and depending on line usage and
> oversubscription in the carrier network, occasional packet loss isn't
> unheard-of - so we would really like to avoid initiating an ISDN dial-up
> every time a single ping gets lost...
>
> Is this just not there, or am I overlooking something?
>
> (We are currently using ipIcmpEcho probes, but could set up an responder
> on the other side and run other IP SLA protocols if that helps)
>
> gert
>
>

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings


More information about the cisco-nsp mailing list