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try thisget a crossover fiber then connect switches and then check the speed and duplex mode for both switches they must have the same spees and duplex modesee if you Fiber is working properly
does the interfaces are enable?run this command, show interface status, see if the interfaces status, is must be connected, check for the duplex and speed statusdoes LEDs are on or blinking state?see the speed and duplex configuration for the server ...
you must be sure that the MTU is the same on all the equipments including servers, the default is 1500. On switches for example it is not shown with the show running command by default unless someone have changed itI got some issues with MTU, I have ...
Get a Lap top and install the wireshark protocol analyzer or another kind of protocol analyzer then configure the span feature in your switch then start to monitor your network, this configuration does not require and ip address configured in the swi...
See link bellow! this issue is common when you have dls to internet and nat configuredThis is very good linkhttp://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a008071a7c2.shtml
