01-04-2010 11:02 AM - edited 03-06-2019 09:08 AM
Hi All,
there are UC520 and IAD devices. in IAD, fa interface has "duplex full" and in UC520, fa interface has "duplex auto". when I do "show interface fa 0/0" in UC520, I see "duplex half" and I am receiving lots of collision errors.
any suggestion would be very appreciated.
Alex
01-04-2010 11:07 AM
Hello Alex,
Both sides of a link should have auto-negotiation on, or both sides should have it off.
http://www.cisco.com/en/US/tech/tk389/tk214/technologies_tech_note09186a0080094781.shtml#when
HTH,
01-04-2010 11:17 AM
You have a duplex mismatch.
Here is a guide http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00800a7af0.shtml
NIC - Auto.................Switchport - Auto GOOD
NIC - 100/Full
01-04-2010 11:19 AM
Sorry My other post was incomplete.
Here is the link http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00800a7af0.shtml
See table 1
Based on that you have a duplex mismatch.
Please rate all posts that help.
Mike
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