3550 Switch Uplink Half Duplex

jpannorfi · ‎03-28-2008

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

Edison Ortiz · ‎03-28-2008

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

HTH,

__

Edison.

keeleym · ‎03-28-2008

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,

Michael