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Unable to Connect Ethernet interface on a Catalyst 3550-12 to a Catalyst 2960-x

billpollak
Level 1
Level 1

‎01-20-2015 06:37 PM - edited ‎03-07-2019 10:18 PM

Hi:

I have C3550-12 all ethernet interfaces are set to speed and duplex auto.  I have a C2960-x all ethernet interfaces are set to speed and dulpex auto. I used a streight through cable and a cross-over cable without any connection.

When I use an Copper SFP on the C2960-X the connection works. I have connected the C3550-12T or the C2960-x to a C2960-compact with either cables and the connection works.

What am I missing?

 

 

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jean.mondesir
Level 1
Level 1

‎10-17-2015 11:50 PM

Billpollak did you resolve this if so how?

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