Latency between GCI Anchorage and VZB in NY

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1

All,

I've been working diligently to improve performance of interactive applications (Citrix, terminal) that are run by users in our office located in Anchorage, and are served by a managed Internet connection provided by GCI. Our applications reside in the Buffalo, NY area.

Via MTR, I've seen no or almost-no lost packets, whereas RTT averages around 124ms and at times is as high as 328ms.

I'm looking for feedback from others regarding this RTT, hopefully from customers of GCI. 328ms RTT is high as far as I'm concerned, and it seems like this could be controlled a little better.

If this is status quo for GCI->VZB/MCI connections, then I'd be interested in that feedback as well.

Thanks in advance

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2

I don't know anything about your specific case... but with an 100% optimum light-path you're looking at ~55 ms RTT between ANC-NYC (1ms RTT per 100km of fiber):

<http://gc.kls2.com/cgi-bin/gc?PATH=anc-nyc &RANGE=&PATH-COLOR=red&PATH-UNITS=km&PATH-MINIMUM=&SPEED-GROUND=&SPEED-UNITS=kts&RANGE-STYLE=best&RANGE-COLOR=navy&MAP-STYLE=>

Of course fiber very seldom goes direct path, so 124ms sounds plausable and could most likely be improved by a little bit by choosing another provider, but would that really substantially improve your interactivity problem?

3

I'd be looking at WAN optimisers like Riverbed, Juniper, Silverpeak etc.

Even if you move providers and it works better today there's no saying they
won't move their paths about and you'll be back on the same boat tomorrow.

4

Hi,

All,

I've been working diligently to improve performance of interactive
applications (Citrix, terminal) that are run by users in our office
located in Anchorage, and are served by a managed Internet connection
provided by GCI. Our applications reside in the Buffalo, NY area.

The interactivity problem probably has more to do with your Citrix
setup. What specs are your Citrix server(s)? I doubt it is
virtualized, but just in case, is it? I ask because it sounds more like
iowait.

Process Explorer (sysinternals) can be useful for listing CPU and I/O
hungry applications on the Citrix server(s).

Via MTR, I've seen no or almost-no lost packets, whereas RTT averages
around 124ms and at times is as high as 328ms.

I'm looking for feedback from others regarding this RTT, hopefully
from customers of GCI. 328ms RTT is high as far as I'm concerned, and
it seems like this could be controlled a little better.

Spikes in RTT are likely normal. Your managed internet connection is
probably provided over an MPLS private network, which means that it
still has to share packet queues with other customers.

William