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LACP block between Aruba 8400 and Dell switches

This thread has been viewed 11 times

  • 1.  LACP block between Aruba 8400 and Dell switches

    Posted Aug 05, 2024 02:31 PM

    Hello everyone,

    We've face an issue with 1x 8400(VSX) and 2x Dell S5424F(VLT), when configure LACP on both sides, LACP set up but with 1 interface, the other shows as lacp-block.

    The configuration on Aruba side:

    interface lag 24 multi-chassis
        description LAG-UPLINK-TOR
        no shutdown
        no routing
        vlan trunk native 1
        vlan trunk allowed vlan 223,301,310
        lacp mode active
        lacp rate fasts
        rate-limit broadcast 3000 pps
        spanning-tree loop-guard
        spanning-tree root-guard

    the configuration on Dell side:

    interface port-channel24
     description UPLINK-CORE-10-21
     no shutdown
     switchport mode trunk
     switchport trunk allowed vlan 223,301,310
     vlt-port-channel 24

    Dell is using RSTP and Aruba is using MST

    Any one alredy have this issue?



  • 2.  RE: LACP block between Aruba 8400 and Dell switches

    MVP GURU
    Posted Aug 05, 2024 03:11 PM
    Hi! on Dell S5424F Cluster (VLT) side was the Port-Channel set to operate in Static (Non Protocol) aggregated mode or LACP aggregated mode (as per VSX side)?

    Two things should match for sure on both sides: Aggregation Mode (say LACP) and VLAN Membership (PVID + Allowed) of those logical interfaces (VSX LAG interface - which is Multi-Chassis - on VSX side and the corresponding LAG on Dell VLT side).



    Original Message


  • 3.  RE: LACP block between Aruba 8400 and Dell switches

    Posted Aug 05, 2024 03:46 PM

    Hello Parnassus

    On Dell the LACP is configured as LACP mode active:

    interface ethernet1/1/24:1
     description UPLINK-CORE-10-21
     no shutdown
     channel-group 24 mode active
     no switchport
     flowcontrol receive off

    We alredy have check the VLAN membership, but we will do it again just in case.

    As soon we test again I return and give feedback.

    Thank you


    Original Message


  • 4.  RE: LACP block between Aruba 8400 and Dell switches

    Posted Aug 06, 2024 01:58 AM

    Hi

     

    On VSX side, can you run a "show lacp inter" command? Do it on both VSX peers (or do it a second time on the same node with "show lacp inter vsx-peer"). Furthermore, make sure the IDs are the same and VSX is synchronized. Please confirm by running "show vsx status".

     

    If possible, please also run a similar command on DELL side. To make LACP work, the partner IDs shown must be the same on all member links. You can confirm that by running the commands. Apart from not running the protocol at all wrong partner IDs are the second most thing that goes wrong when you face "lacp-block" errors.

     

    Regards,

    Thomas

     




    Original Message