[c-nsp] IP SLA Scalability

[David Freedman]

> 
> If you're doing this in an MPLS VPN scenario, you might want to make
> sure you test your code so it has timestamping for arrival time for
> packets even if they are labeled. I ran into this on a 7301 5 years ago,
> took 14 months for that TAC case to complete with the answer that
> "timestamping wasn't done in labeled packets" and as a result, any cpu
> spike would cause jitter in the measurements. Converting the router to
> IP only (putting it behind a MPLS PE router) "solved" the problem.
> 

We dont do labelled for (this amongst other) reason either, we have
probes (dedicated or virtualised) on each PE, in a full mesh.

Dave.


-- 


David Freedman
Group Network Engineering
Claranet Group