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8878 Views 5 Replies Latest reply: Aug 23, 2011 11:12 PM by Sandeep RSS

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L2 switch loop in a big network?

Aug 22, 2011 2:53 AM

Sandeep 12 posts since
Jun 7, 2011

A tricky question - please help me out providing your views/ans..


How would you identify a L2 switch loop in a big network? Imagine there are many L2 switches in a big organization each connected at different floors. By mistake an user connected an ethernet cable over the switch ports back to back creating a loop. This would eventually make the entire network stormed with broadcasts bringing it down.


The scenario has no STP running on the nework. How can we identify immediately where the loop is instead of searching for the port physically on each floor which is time consuming. let me know if you any commands or troubleshooting technique that we can easily simplify and find out the problem.




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