Question about 3Com (3C17206TAA-US) 24x10/100 Mbps Networking Switch

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3COM 4400 has block my entire LAN ...

I work in factory with over 20 switches 3COM 4400. Today sudenlly the entire network has frozen. After a couple of  hours we manage to solve the problem by extracting one of the switches from online state.
It was blocking the entire network. I didn't thought that was posible but I saw it with my own eyes.
I want if has happend in other cases and if it is possible to prevent some how this problem.
Thank you verry much.

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Re: 3COM 4400 has block my entire LAN ...

Please provide solution of Network is blocked

Posted on Nov 17, 2008

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Re: 3COM 4400 has block my entire LAN ...

Sounds like they are daisy chained together and this glicth locked the system.  How are the switches routed through your network.  Do you connect via T1 or Fiber?

Posted on Oct 27, 2007

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