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Bring performance and reliability to your network with the HPE Aruba Networking Core, Aggregation, and Access layer switches. Discuss the latest features and functionality of your switching devices, and find ways to improve security across your network to bring together a mobile-first solution
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Aruba 2930M model JL324A

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  • 1.  Aruba 2930M model JL324A

    Posted Dec 20, 2018 10:05 AM

    Hi community

    Let´s generate some controversy for this model just to have a clear view of some interesting concepts.
    Datasheet points out these values ​​(by the way, it seems that in the QuickSpec there are different values ​​which might be erroneous):

     

    • Stacking performance: 100 Gbps
    • Switching capacity without stack: 320 Gbps
    • Switching capacity including stack: 420 Gbps
    • Throughput: 112 Mpps

    The worst (most demanding) scenario about ports for this model is:

     

    • 24 x 5 Gbps downlinks
    • 04 x 10 Gbps uplinks
    • 02 x 25 Gbps stack

    The switching capacity required for the uplink and dowlink ports would be 320 Gbps (in+out value) - Just add speeds in and out.
    The switching capacirty required for the stack ports would be 100 Gbps (in+out value) - Just add speeds in and out.

    If we make some calculations, the forwarding rate (throughput) for the worst port scenario should be at least:

    without stack: 238 Mpps (160 Gbps x 1.488 Mpps per Gbps)
    with stack: 312 Mpps (210 Gbps x 1.488 Mpps per Gbps)

    Why throughput for this model is far below: 112 Mpps?
    Would this mean that the 2930M is not a non-blocking device from the throughput perspective?

    Regards

     


    #2930M
    #2930M