[nflug] T1 connection question

Sam Stern samstern at samstern.net
Mon May 21 13:06:45 EDT 2007



>-----Original Message-----
>From: nflug-bounces at nflug.org [mailto:nflug-bounces at nflug.org]
>On Behalf Of anthonyriga
>Sent: Monday, May 21, 2007 12:23 PM
>To: nflug at nflug.org
>Subject: [nflug] T1 connection question
>
>Company I am working for is using Onecommunications
>for our provider. We origionally had just a data t1
>and people where complaining that data connections to
>our Charlotte office  and other offices is slow. So
>for a few hundred dollars more I was able to get a
>bonded T1  service which uses Inverse Multiplexing
>over ATM with 3 bonded T1 handoff = 4.5mb/sec. Because
>of traffic and such it comes to about 3.5mb. After
>doing few DSL tests I have noticed the upload speeds
>are slower then the download speeds. I have put calls
>into Onecommunications and they are trying to find out
>issues. What causes the upload speeds to be slower? I
>thought that most of time that up/down speeds should
>be constant. Are most of the speeds dependent of
>Onecommunications? Out network is not really busy and
>I think IMA is overkill but office mgr insisted for
>the price was good.
>
>

This may sound silly but I've seen it happen: check that you are using full
duplex on the switches, routers, etc connected to t1. IF the upstream is
near saturation, the downstream will seem intermittent.

Sam S.




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