[zach420]

So here's the scoop. At work, one of our switches isnt working. It is a superstack 3300 switch by 3com. No computer plugged into that switch will work. It is a 24 port switch that is hooked up to a fiber connection. There is various amount of ethernet jacks spread throughout the building that comes back and gets the internet from that switch. Starting today everything plugged into the switch has no connectivity/limited access.

I checked the fiber connectors in the server room and they all seem to be hooked up and ok. I tried using another spare switch but have the same results. There are various other switches throughout the plant and they work ok.

Does anyone have a clue where to start?

Thanks.

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so if you take the switch that's there, and unhook it from the fiber connection, then hook up another switch to that fiber connection the second switch also doesn't work? is the fiber connection the only thing that connects this switch back to the MDF (or at least to the rest of the building)? does the fiber connect directly to the switch (i.e. the switch has a transceiver built in)? or do you have an external transceiver?

[dsenette]

so if you take the switch that's there, and unhook it from the fiber connection, then hook up another switch to that fiber connection the second switch also doesn't work? is the fiber connection the only thing that connects this switch back to the MDF (or at least to the rest of the building)? does the fiber connect directly to the switch (i.e. the switch has a transceiver built in)? or do you have an external transceiver?

[zach420]

The second switch also doesn't work when you try it. Just get limited or no connectivity. We use a lc to rt patch to connect from the fiber drop to the back of the switch.

It worked previously, however we tried replacing it with a newer switch and then put it else where, now it just gives us limited or no connectivity status.

[zach420]

lc to st*

[dsenette]

have you tried a different LC to ST? have you tried different fiber jumpers on both ends? what if you take the switch and connect it directly to whatever is on the other end of the fiber?

[zach420]

have you tried a different LC to ST? have you tried different fiber jumpers on both ends? what if you take the switch and connect it directly to whatever is on the other end of the fiber?

yes, i replaced both patches on both ends and it still does the same limited/no connectivity. anything else you can think of?

[dsenette]

and the switch that you swapped the first one with, was working elsewhere correct?

if you take the first switch and plug it in somewhere else (where another similar switch is currently located and working) does it still work there?

when you're plugging in both the new switch and the old switch in it's current location, are you plugging everything back in that was connected (as far as all of the ethernet cables?) or just your testing equipment?