Network Architecture & Design

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Auto negotiate on ports of x670-g2-48x

  • 1.  Auto negotiate on ports of x670-g2-48x

    Posted 10-26-2017 09:27
    The default configuration for ports on a x670-g2-48x appears to be with auto-neg off:

    configure ports 1:14 auto off speed 10000 duplex full

    I have inserted a copper SFP and tried to change to auto on. Although the command is there I get an error:

    Slot-1 lab1.19 # conf port 1:14 auto on
    Error: Speed has to be specified on port 1:14

    I get the same message from ports without an SFP inserted.

    How do I set the port to be auto-neg?


  • 2.  RE: Auto negotiate on ports of x670-g2-48x

    Posted 10-26-2017 09:51
    Hello, Paul!

    For using X670 ports with SFP modules you have to configure speed:
    configure ports 1:17 auto on speed 1000 duplex full

    Thank you!


  • 3.  RE: Auto negotiate on ports of x670-g2-48x

    Posted 10-26-2017 10:12
    Thanks for the reply.

    On the same note, I do not seem to be able to set any ports to 100M with auto-neg.
    Slot-1 Core.44 # conf ports 2:33 auto on speed 100
    Error: Speed specified is not supported on port 2:33.

    We have some legacy devices that only support 100M. If I configure 1G, is this the maximum and therefore it will negotiate down to 100M, or will it only negotiate to 1G?


  • 4.  RE: Auto negotiate on ports of x670-g2-48x

    Posted 10-26-2017 11:12
    Oh yes, that's a shame 😞.

    Thanks for the reply.


  • 5.  RE: Auto negotiate on ports of x670-g2-48x

    Posted 10-26-2017 10:12
    Summit X670 do not support 100Mbps.
    You can find this in the Data Sheet, HW Install Guide etc.



    Thank you!