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6509 connected to 3640 seeing multiple Collisions

The connection between the 6509 and the 3640 are both set to 10/half but we are seeing about 80 percent Collisions on the Ethernet interface . Bandwidth appears to be using about half on the link.

What else would cause an issue like this? This seems to be really slowing down all network app's.

1 REPLY
Cisco Employee

Re: 6509 connected to 3640 seeing multiple Collisions

Some collisions on a 10/half link is normal, 80% is definetely way above the acceptable thereshold. Do you see any errors of the 6500 switchport? Try changing cable and/or changing to another ethernet port on the router. Also the following pages on CCO should help

http://www.cisco.com/warp/public/63/eth_collisions.html

http://www.cisco.com/warp/public/473/53.shtml

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