[Klug-general] Network Switches

[Stuart Brand]

An easy way to see if its a storm is to run tcpdump from one of the machines, and exclude itself - something like tcpdump not host 192.168.1.5 <- as in the localhost ip

Stuart

On Friday, May 15, 2009, at 11:51AM, "Colin" <binarysignal at gmail.com> wrote:
>2009/5/15 Peter Childs <pchilds at bcs.org>
>
>> Just rack every one brain.
>>
>> I have a small network made up of a number of Unmanaged Switches we
>> have gathered over a period of time.
>>
>> Its about 40 PC wired round about 8 unmanaged switches. (Says he
>> trying to count them)
>>
>> We suffer from Random Packet loss from time to time, this is usally
>> fixed by unplugging the machine suffering from this error and plugging
>> back in again. (The network cable)
>>
>> Where to start working out how to cure the problem on a more perminate
>> basis....
>>
>> I'm wondering if the problem is Network Card, Cable, Switch or
>> Drivers. or what.....
>>
>> Thanks
>
>
>I would guess you have a switching loop some place and could be suffering a
>broadcast storm.  This could be initiated from a faulty NIC. We had a
>similar problem couple of years ago and replaced all unmanaged switches with
>managed ones and enabled STP.  This stabilised the network and stopped
>switching loops/broadcast storms.
>Colin
>(just my uneducated guess)
>