Remote site poor network performance

Posted on 2011-10-24
Last Modified: 2012-05-12
good afternoon,

We have one remote site with users complaining about severely degraded network performance when using RDP, email, shared folders, etc. We have set up Cacti at our remote sites and can see that the network bandwidth utilization is very low, this site has a T1 and is using less than a third of available bandwidth . What types of problems would cause extremely  slow response at a remote site and what would be the best way to troubleshoot these problems?

thanks in advance for any assistance
Question by:WAMSINC

    Author Comment

    also to add additional detail this is intermittent and has no pattern. Works fine for days at a time and then things slow down so bad it takes 5 min to move 1MB
    LVL 82

    Expert Comment

    by:Dave Baldwin
    Some times marginal connections go bad with weather changes.  This can cause errors that cause the network to have keep retrying packets to get them thru.  Kind of like a WiFi network with nearby interference.  It still seems to work but most of the time is being taken up by retries instead good data.

    Author Comment

    Is there any way to prove that to management or even the ISP? Ideally we would like to catch this while its happening.
    LVL 82

    Accepted Solution

    The first step would be to use something like Wireshark to monitor and log the traffic and errors when the problem is occurring.  Then you will have something to show them and get some further action.  The ISP would have to contact the carrier, probably the phone company, to get any actual cable or wire faults fixed.  

    Someone probably needs to make sure that your connections and wiring are ok before you do that.  I have had silly things like a network connector on a switch go bad and I have had switches go bad.  Make sure the T1 interface is getting good power also.  Have you had any power problems recently?  Can you power cycle all the equipment at some point to let it power up properly?

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