Kevin Brennan Fri, 05/15/2009 - 02:55
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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.



Joseph W. Doherty Fri, 05/15/2009 - 03:43
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"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.)


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