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New Member

Collisions detected in a Catalyst 4500

I have some problems with a WS-X4515 and a Broadcom NetXtreme Gigabit 5703. If I do a sh interface it will be appear collisions in that interface.

6 REPLIES
New Member

Re: Collisions detected in a Catalyst 4500

Check for speed/duplex mismatch.

New Member

Re: Collisions detected in a Catalyst 4500

There aren't duplex-mismatch and the speed is ok.

1000 Mbps Full-duplex in both sides

New Member

Re: Collisions detected in a Catalyst 4500

Here's a good place to start.

http://www.cisco.com/en/US/products/hw/modules/ps2033/products_tech_note09186a008009446d.shtml

I am assuming this is an ethernet connection.

Generally collisons are the result of speed/duplex mismatches, a bad nic or cable or oversubscription. If you have a open port on your switch, try using that and check for collisions.

New Member

Re: Collisions detected in a Catalyst 4500

Thank you for the advice but I don't use a shared medium. The server is connected to the switch directly.

The connection is a Gigabitethernet.

Thanks

New Member

Re: Collisions detected in a Catalyst 4500

In that case the collisions would be caused by a bad nic or cable. Have you tried replacing the cable or nic? You could also try moving the connection to a \different port on your switch to eliminate the port as the problem.

New Member

Re: Collisions detected in a Catalyst 4500

I have tried this but the problem persist. The problem only exists with the Broadcom NIC because I have others NICS and they don't have any problems

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