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

Unanswered Question

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


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chrcoope Tue, 11/10/2009 - 06:33
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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.




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