Wireless Access

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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.
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changing interfaces in port channel

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  • 1.  changing interfaces in port channel

    Posted May 05, 2015 10:04 AM

    Hi,

     

    we have a 7210 controller where currently 1 port channel is configured with 2 x 10 Gbit fibre interfaces.  We want to change that into 2 x 1 GBit utp interfaces.

     

    Mixing interfaces of different speed is not supported.  So i thought of retrieving the config, modify, return the new config, and boot from it...

     

    Unfortunately, after booting from the new config, the network is no longer working.  And i do not see any error.  When executing 'show running' the command seems to hang...

     

    We just moved the lines :

     

    lacp timeout short
    lacp group 1 mode active

     

    from interfaces 2 and 3 to interfaces 0 and 1, which should be sufficiant.

     

    interface gigabitethernet 0/0/0
    description "GE0/0/0"
    trusted
    trusted vlan 1-4094

    !

    interface gigabitethernet 0/0/1
    description "GE0/0/1"
    trusted
    trusted vlan 1-4094

    !

    interface gigabitethernet 0/0/2
    description "GE0/0/2"
    trusted
    trusted vlan 1-4094
    lacp timeout short
    lacp group 1 mode active
    !

    interface gigabitethernet 0/0/3
    description "GE0/0/3"
    trusted
    trusted vlan 1-4094
    lacp timeout short
    lacp group 1 mode active

     

    Anyone having an idea?


    #7210


  • 2.  RE: changing interfaces in port channel

    Posted May 05, 2015 10:16 AM

    pnobels,

     

    Make sure that new port channel is trusted on the Aruba Controller.



  • 3.  RE: changing interfaces in port channel

    Posted May 05, 2015 10:22 AM

    Actually, i did not change the port channel config :

     

    interface port-channel 1
    trusted
    trusted vlan 1-4094
    switchport mode trunk
    switchport trunk native vlan 101
    switchport trunk allowed vlan 101-102,208

     

    I just changed the interfaces which were in the port-channel.



  • 4.  RE: changing interfaces in port channel

    Posted May 05, 2015 10:25 AM

    pnobels,

     

    If that is an up to date version of the config, it would say what physical interfaces are added under the port channel.   Those interfaces are not in your config.

     

    It would say :

     

    interface port channel 0

    add interface gigabitethernet 0/0

    add interface gigabitethernet 0/1

     

    Those last two lines are crucial and are missing..



  • 5.  RE: changing interfaces in port channel
    Best Answer

    Posted May 13, 2015 03:30 AM

    Okay, turned out the Aruba config was correct.  And i had to add vlan 1 to the trunk on the HP switches before the aggregate came online.