Cisco ATA 186 on Linksys SFE2000P-EU > Single Collision Frames

pijssel · ‎11-09-2009

Hi all,

Recently we've deployed a fresh installation. But from the start we had some issues with a fax connected via a Cisco ATA 186 to a Linksys SFE2000P-EU switch. Which then is connected to a Cisco 3560. All ports on the Cisco 3560 are looking fine, but if I look at the port to which the ATA is connected I see a lot of Single Collision Frames! Is this because the ATA is running on 10Mbps/Half Duplex? Because I don't get to see these errors when I connect the ATA directly to the Cisco 3560. And is it possible to solve this issue, because the customer is complaining about missing faxes.

Best regards,

Paul van den IJssel

Digacom

chrcoope · ‎11-10-2009

Paul,

Half duplex will certainly cause collisions (CSMA/CD). Force the device and the switch port it plugs into to 100 full duplex, or 10 full if neccessary. I had a similar issue with my old PCMCIA Xircom 10/100 card. When I force the settings, all is well.

Regards,

Christopher