Another Twist ...
On a related matter - could anyone help me with this. I'll say up-front that I dont know very much about the subtleties of networking !
I have a small network of computers Win2K & Win2K server with a single WinXP(sp2) machine - (these all have intel Gigabit network cards). The context in which these are being used means that very large ammounts of data need to be passed between these machines quickly.
I have just 'upgraded' the network switch from a Dell 2508 (unmanaged) switch to a Dell 5324 (managed) switch - both are Gigabit switches. The upgrade is to enable a larger number of machines to be inter-connected, and to provide support for 'teaming' on the Win2K-server box. Everything works ok when using the 2508 switch.
Following the switch change over, the Win2K machines appear (so far) to work fine (they can communicate with each other and the outside world). However, the xp box is not so happy - although pings to/from it are successful - other things are failing (eg the xp machine cannot establish http connections, with either internal or external machines).
I have only been able to find two ways of making the xp box work as before :
(i) Disable spanning tree on the 5324 switch AND set the connection to 100MB (Full Duplex) ... which defeats the purpose of the upgrade.
(ii) Insert the 2508 switch between the 5324 and the xp machine ... which seems like a hack ... and doesnt provide a long-term fix.
I have checked that :
(i) This isn't an firewall problem - I have disabled them all for testing.
(ii) I have tried setting the 'wait for the network at computer startup' policy - no joy.
(iii) Re fixing the duplex value at one/both ends. As far as I can tell I cant do this at 1000M :
switch - The duplex config menu is disabled at 1000M (although not for eg 100M).
xp box - On the network driver menu, there is no 1000M option - this is obtained using the 'auto detect' value, which doesnt appear to enable you to set the duplex value independently.
(iv) I have tried running the 'network diagnostics' tool under xp 'help and support', this didnt reveal anything obvious - perhaps because it seems to test connectivity with 'pings', which do appear to work.
(v) I have taken a look at the Event Log - there do appear to be more 'Event 4201's than might be expected - but nothing else obvious.
Could anyone give me any suggestions as to what to do ? Dell technical support seem to have gone a bit quiet since I raised this with them. I would appreciate any insignts that anyone might have on how to sort this out !
Thanks,
Andrew Gray