Data Center (SLX)

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BR-VDX6740 - vlan: traffic between access and trunk ports.

  • 1.  BR-VDX6740 - vlan: traffic between access and trunk ports.

    Posted 11-07-2018 15:13
    hi guys,

    with a client vlan "unaware" and port channel as this one:

    Interface name : Port-channel 25
    Switchport mode : trunk
    Fcoeport enabled : no
    Ingress filter : enable
    Acceptable frame types : vlan-tagged only
    Native Vlan : 4
    Active Vlans : 2,4,1310
    Inactive Vlans : -
    MAC learn disable Vlans : -

    and another port channel like:

    Interface name : Port-channel 29
    Switchport mode : access
    Fcoeport enabled : no
    Ingress filter : enable
    Acceptable frame types : vlan-untagged only
    Default Vlan : 4
    Active Vlans : 4
    Inactive Vlans : -
    MAC learn disable Vlans : -

    Is "Acceptable frame types" the reason why nodes cannot talk to each other?
    How to rectify this problem?

    many thanks, L.


  • 2.  RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

    Posted 11-07-2018 15:25
    Hi Pawel,

    If the host on Po25 is sending packets untagged then I believe the expected behaviour is to drop the packets. You could try making native VLAN untagged on Po25.

    Many thanks,
    Sargis


  • 3.  RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

    Posted 11-07-2018 15:49
    Yes,
    no switchport trunk tag native-vlan - I though should do (and it seems it does) but weird bit is that this does not change the output of: sh int switch - "Acceptable frame types : vlan-tagged only" remains but!! nodes can ping between.
    Weird, no? (I have not tested trunks yet)


  • 4.  RE: BR-VDX6740 - vlan: traffic between access and trunk ports.



  • 5.  RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

    Posted 11-07-2018 16:18
    Yes, that's the correct command. It maybe just show output issue, since the packets pass correctly


  • 6.  RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

    Posted 11-08-2018 12:00
    I'm still new - don't know if ExtremeNetworks runs something like bugzilla but this qualifies as a bug in my mind - "Acceptable frame types : vlan-tagged only"
    I get something very wrong or am missing something here. Otherwise it's misleading big time - I would have not made this post if it had not been for that output info.


  • 7.  RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

    Posted 11-08-2018 14:31
    Hi Pawel,

    Yes, there is a similar system. The issue seems cosmetic, but still a bug. Could you open a TAC case regarding that output?


  • 8.  RE: BR-VDX6740 - vlan: traffic between access and trunk ports.

    Posted 11-08-2018 17:32
    Where do I find that system / how to open a TAC case?
    There should be a simple bugzilla.
    All I could find were support contract stuff and I do not think I have such thing.