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ArubaOS-CX Switch MC-LAG

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  • 1.  ArubaOS-CX Switch MC-LAG

    Posted Jun 14, 2021 10:59 AM
    Hi,
    I have configured MC-LAG in Aruba 8320 with Vmware EXSI on HPE DL380. But LACP forwarding mode shows as "LACP-BLOCK"


    interface lag 8 multi-chassis

        description DL380 E9:E9:XX

        no routing

        vlan trunk native 1

        vlan trunk allowed all

        lacp mode active

        lacp rate fast


    ------------------------------
    Dinusha Chandrasinghe - MVP | ACMP | ACSP |ACCA
    Network Engineer
    Plexus Global (Pvt) Ltd
    Colombo Sri Lanka
    +94717327420
    ------------------------------


  • 2.  RE: ArubaOS-CX Switch MC-LAG

    Posted Jun 14, 2021 02:35 PM
    Is the LAG configured correctly on the ESX host? Is LACP enabled?

    ------------------------------
    Dustin Burns
    Senior Mobility and Access Engineer @WEI

    ACCX 1271| ACMX 509| ACSP | ACDA | MVP Guru 2021
    If my post was useful accept solution and/or give kudos
    ------------------------------



  • 3.  RE: ArubaOS-CX Switch MC-LAG

    Posted Jun 14, 2021 03:32 PM
    LACP on VMware vSphere is supported only if you can setup vDS (virtual Distributed Switch). vSS (virtual Standard Switch) implementations support only static aggregations (thus simple static - VSX or non-VSX - LAGs in ArubaOS-CX jargon or type "trunk" Ports Trunks in ArubaOS-Switch jargon).

    Are you playing with vDS or vSS?

    ------------------------------
    Davide Poletto
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  • 4.  RE: ArubaOS-CX Switch MC-LAG

    Posted Jun 15, 2021 01:09 AM
    Vmware Standard doesn't support VDS. Is that mean we can't achieve LAGs with VSX. Since VSX uses a separate control plane.

    ------------------------------
    Dinusha Chandrasinghe - MVP | ACMP | ACSP |ACCA
    Network Engineer
    Plexus Global (Pvt) Ltd
    Colombo Sri Lanka
    +94717327420
    ------------------------------



  • 5.  RE: ArubaOS-CX Switch MC-LAG
    Best Answer

    Posted Jun 15, 2021 01:57 AM
    "Vmware Standard doesn't support VDS"

    Correct.

    "Is that mean we can't achieve LAGs with VSX"

    Not correct: you can terminate a VSX LAG against a vSS but that VSX LAG needs to be "static" (non LACP). VSX LAGs can be LACP/non-LACP.

    That's to say that if you are playing with a quite common VMware vSS implementation then you can deploy LAGs on vSS and you can terminate them against a VSX but those vSS LAGs necessarily (due to vSS restrictions) needs to be "static" (non LACP) and, to match, the same must happen on VSX side (Static VSX LAGs).

    What you call MC-LAG (Multi-Chassis LAG) is called VSX LAG on Aruba VSX current literature. VSX LAGs can be static/LACP even if, normally, you will see more often VSX LAG deployed with LACP other than with "non protocol" (static).

    ------------------------------
    Davide Poletto
    ------------------------------



  • 6.  RE: ArubaOS-CX Switch MC-LAG

    Posted Jun 16, 2021 04:20 AM
    Hi, 
    I have configured static VSX Lag with Vmware. Now it is up and running thank you all
    interface lag 4 multi-chassis static

    no shutdown

    description DL380-1 E9:E9:XX

    no routing

    vlan trunk native 1

    vlan trunk allowed 1,10,20,30,40


    ------------------------------
    Dinusha Chandrasinghe - MVP | ACMP | ACSP |ACCA
    Network Engineer
    Plexus Global (Pvt) Ltd
    Colombo Sri Lanka
    +94717327420
    ------------------------------