[cisco-voip] PC Port on Phone Fails During Large Data Transfer

[Fuermann, Jason]

WHOA, that's some weird setup.
Everything should work fine on auto/auto. If not both sides of the link need to at least match, or you will get duplex mismatches which will cause a lot of problems

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of STEVEN CASPER
Sent: Tuesday, February 24, 2009 12:12 PM
To: James Buchanan; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] PC Port on Phone Fails During Large Data Transfer

This is our standard at the moment

Switch ---------Phone Switch Port---------Phone PC Port-------   PC NIC
Auto/Full            Auto/Auto                           100/Full                   100/Full

There is a long convoluted history behind these settings but we have not had any issues until recently.

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>>> "James Buchanan" <jbuchanan at ctiusa.com> 2/24/2009 12:07 PM >>>
When you hardcoded to 100/Full, did you hardcode on the switch end and inside the phone?

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of STEVEN CASPER
Sent: Tuesday, February 24, 2009 9:49 AM
To: 'cisco-voip at puck.nether.net'
Subject: [cisco-voip] PC Port on Phone Fails During Large Data Transfer

 Has anyone run across the following scenario -

 When large amounts of data are transferred between an IP Phone and an attached PC such as during a Microsoft Office update the update fails. When the failure occurs the phone shows the status of port 2 (PC Port) as no link. it was working fine prior to the update starting. This fails consistently when the phone PC port and the PC NIC is set for 100/full, always seems to work when both are set to Auto/Auto or when the phone is bypassed and the PC is plugged directly into the switch port.

Tried multiple phones 7941/61/11s. Current phone under test is running phone load is 41.8-3-3SR2S and we are connected to a 3750 running 12.2.25 SEE2. Going to do more testing but wondering if any one else may have run across this.

Thanks
Steve


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