Thursday, November 14, 2013

CCDP - ARCH - UDLD (UniDirectional Link Detection):


  • Used where there are fibre links between switches (but can also be applied to Copper interfaces)
  • Interface could be seen as Up/Up but due to a mismatch on the tx/rx pairs the comms become unidirectional 
  • UDLD Normal mode error-disabled the end that detected the unidirectional state - default mode
  • UDLD Agressive mode disables both ends - set it with the [agressive] switch
  • Uses 15 sec hello timer
  • Can be applied globally or on the interface


1 comment:

  1. Thanks for sharing such beautiful information with us. I hope you will share more info about it. Please keep sharing.
    Lenovo service center in Kukatpally



    ReplyDelete