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Bring performance and reliability to your network with the Aruba Core, Aggregation, and Access layer switches. Discuss the latest features and functionality of the ArubaOS-Switch and ArubaOS-CX devices, and find ways to improve security across your network to bring together a mobile first solution.
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ArubaOS-CX 10.01 VSX: maximum number of VSX LAGs (MC-LAGs)

  • 1.  ArubaOS-CX 10.01 VSX: maximum number of VSX LAGs (MC-LAGs)

    Posted Jul 22, 2018 09:53 AM

    Hello, from what I've understood actually a maximum of 128 (Aruba 8400) and 32 (Aruba 8320) VSX LAGs (as known as Multi-Chassis LAGs) can be defined and operated per node (and so globally) on a VSX deployment.


    Question: are those numbers - especially for a VSX depolyment with Aruba 8320 - fixed and immutable or is there a plan to enhance them with future ArubaOS-CX 10.01 (or 10.0n) software releases?


    I'm facing the above question when considering a scenario with two Aruba 8320 JL479A (48 SFP+ and 6 QSFP+ interfaces), deployed using VSX: in that case the VSX can, under some scenarios, easily outreach 30 or more Multi-Chassis LAGs globally especially when the number of MC-LAG member interfaces is kept as low as possible (say one or two interfaces per node)...in that case the number of possible MC-LAGs using no more than one or two interfaces per node can scale rapidly (with respect to the scenario where MC-LAGs member interfaces number is pushed to its actual limit of 4 member interfaces per MC-LAG per node, 8 member interfaces per MC-LAG globally on the entire VSX).


    Side note: normal (non MC-) LAG maximum number should remain 128 for both Aruba 8320 and Aruba 8400, VSX or Standalone they are deployed.

  • 2.  RE: ArubaOS-CX 10.01 VSX: maximum number of VSX LAGs (MC-LAGs)

    Posted Jul 22, 2018 10:27 AM
    We are working on improvements to increase the number of VSX Lags for Aruba 8000 series platforms. I sent you a PM with more information.

  • 3.  RE: ArubaOS-CX 10.01 VSX: maximum number of VSX LAGs (MC-LAGs)

    Posted Jul 22, 2018 01:52 PM

    Hello Scott, thanks for answering (It's Sunday!).

    I answered you in detail via PM too.

    My question is not due - as of now - to a real blocking setup issue: as I wrote above...we're going to deploy VSX [*] using 28 one-port MC-LAGs (VSX LAGs) per chassis...so just below the actual 32 interfaces limit although expecting a little more headroom would be reasonable, especially on Aruba 8320 and for a similar corner case.

    Our setup timeline will be some date of August, probably 1st or 2nd week of August.

    Will be interesting to see upcoming enhancements.


    [*] briefly discussed in this thread.