3550 Switch Uplink Half Duplex

Unanswered Question
Mar 28th, 2008
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Can someoine tell me why some uplink interfaces connect at 1000 Full and others connect at 1000 half. The confiurations are set to auto auto.

Thanks In Advance

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Overall Rating: 5 (1 ratings)
Edison Ortiz Fri, 03/28/2008 - 08:59
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I'm assuming you are using the GigaStack? Well, if you use both ports on the GigaStack, you will get half-duplex connectivity while using only one port provides full-duplex.

Working as designed: http://www.cisco.com/en/US/products/hw/switches/ps646/products_data_sheet09186a00800a1789.html




Hi There

I have seen this happen on more than one occasion when ports are left to auto configure.

I always hard code all my switch ports to the speed and duplex settings I require, rather than hoping that whatever I link together will configure themselves as I want.

Edit: Sorry Edison got in before me. I assumed uplinking and not stacking. I am unfamiliar with switch stacking.

Best Regards,



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