normal ping times over a 2meg mpls cloud

carl_townshend · ‎05-15-2009

Hi all

what are normal ping times over a 2meg mpls cloud? is 29ms ok ?

Kevin Brennan · ‎05-15-2009

Hi Carl,

I dont think that there is any hard and fast answer as it depends on your equipment and how you connect to the SP's cloud.

For what it's worth, I get average response times of 15ms and 35ms from two of my remote sites - both connected over 2mb circuits. The 35ms site has to traverse two service providers so it is a little higher than the other "on net" site.

HTH

Kevin

Joseph W. Doherty · ‎05-15-2009

"Normal" - it depends.

Some factors:

Distance - figure about 1 to 1.5 ms per 100 miles/KM (distance can be [much - e.g. int'l] more than direct p-2-p)

Each switching/routing "hop" adds latency, but assuming there's no congestion, minimal with current equipment

Serialization adds latency - can be quite noticable on low bandwidth link (try both small/large packets to see difference)

Most responding devices treat ping replies with low priority (which can add to latency - Cisco dedicated responders mitigate)

(Don't forget to double expected latecy for RTT.)