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MAS: Configured MTU Isn't Displayed

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  • 1.  MAS: Configured MTU Isn't Displayed

    Posted Feb 11, 2014 05:16 PM

    I set the MTU to 1500 bytes on a port channel interface group, but noticed the MTU size was not reflected when I did a show interface port-channel #. The default MTU of 1514 was displayed.  I tried configuring the MTU on a physical port that is not a member of the port channel and the proper MTU was displayed.  Not sure if this is a cosmetic bug or how it's intended to work.  I'm seeing this on 7.3.0.1



  • 2.  RE: MAS: Configured MTU Isn't Displayed

    EMPLOYEE
    Posted Feb 11, 2014 10:02 PM

    If you set it to 1486, what is displayed in the show output?



  • 3.  RE: MAS: Configured MTU Isn't Displayed

    Posted Feb 12, 2014 12:45 AM

     

    Hi "thecompnerd"

    I tried with MTU ranging from 64 to 9216 (including 1500).
    It reflects properly:

    (MDF-2) (port-channel "1") #mtu 64
    (MDF-2) (port-channel "1") #show interface port-channel 1 | include MTU
    MTU 64 bytes

    (MDF-2) (port-channel "1") #mtu 1486
    (MDF-2) (port-channel "1") #show interface port-channel 1 | include MTU
    MTU 1486 bytes

    (MDF-2) (port-channel "1") #mtu 1500
    (MDF-2) (port-channel "1") #show interface port-channel 1 | include MTU
    MTU 1500 bytes

    (MDF-2) (port-channel "1") #mtu 1514
    (MDF-2) (port-channel "1") #show interface port-channel 1 | include MTU
    MTU 1514 bytes

    (MDF-2) (port-channel "1") #mtu 9216
    (MDF-2) (port-channel "1") #show interface port-channel 1 | include MTU
    MTU 9216 bytes


    Above was tried with both static & lacp based port-channel interfaces, with 7.3.0.1.

    rgds,

    -Vinay