7 Replies Latest reply: Mar 30, 2012 2:50 AM by carlos - CCNP, CCSI, CCNA Security RSS

    Full duplex strange behavior

    carlos - CCNP, CCSI, CCNA Security

      Hallo CLN,

      I´m experiencing a very wierd behavior with the command: Duplex full.

      I have 4 switches they are 3560-X, one is the core and the others are access switch.

      I have a trunk configured between the core and the access switches.

      It happens that when I configure duplex full and both ends of the connection the link goes down.

      If I leave one end to auto the link comes back up.

      From what I know, both sides should be configured for full duplex...

      Has anyone experienced it before?