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  • 1.  HP ProCurve to ArubaOS-CX Jumbo Frames configuration

    Posted Mar 19, 2025 05:26 PM

    Our existing core switch is an HP Procurve 5400zl (j8697a). We have VMware hosts that connect to an iSCSI appliance. The hosts and the storage appliance use jumbo frames, as well as bonded ethernet connections. We want to move the connections from D7 and D8 on the ProCurve to ports 1/4/1 and 1/5/1 on an Aruba 6405.

    As configured on the Procurve, we have the following configuration:

    Old Switch (swflfllhost01)#
    jumbo ip-mtu 9000
    trunk D7-D8 trk11 trunk
    interface D7
       name "iSCSI vlan"
       speed-duplex auto-10g
       exit
    interface D8
       name "iSCSI vlan"
       exit
    vlan 192
       name "VLAN192"
       untagged D1-D6,Trk11
       ip address 192.168.110.1 255.255.255.0
       jumbo
       exit

    Will the above commands translate to the following commands for the Aruba, or are there any other commands we need add other commands, to account for the ethernet bonding and jumbo frames between the old and the new switch?

    New Switch (swflfllcore01)#

    interface vlan 192
        ip address 192.168.110.1/24
        ip mtu 9000
        exit

    interface 1/4/1
        description NatBevFLLEsxi3-Slot1Port0
        no shutdown
        mtu 9000
        lag 1
        exit

    interface 1/5/1
        description NatBevFLLEsxi3-Slot2Port0
        no shutdown
        mtu 9000
        lag 1
        exit

    interface lag 1
        description NatBevFLLEsxi3-iSCSI
        no shutdown
        no routing
        vlan trunk native 192
        vlan trunk allowed all
        exit



  • 2.  RE: HP ProCurve to ArubaOS-CX Jumbo Frames configuration

    Posted Mar 21, 2025 03:33 AM

    the recommended Jumbo frame MTU setting on CX switches is 9198 that you need to set both on L3 (IP) and L2 MTU



    ------------------------------
    If my post was useful accept solution and/or give kudos.
    Any opinions expressed here are solely my own and not necessarily that of HPE or Aruba.
    ------------------------------

    Original Message


  • 3.  RE: HP ProCurve to ArubaOS-CX Jumbo Frames configuration

    Posted Mar 21, 2025 04:33 AM

    CX configuration example for a routed interface:

    interface 1/1/34
    no shutdown
    mtu 9198
    ip mtu 9198
    ip address 172.20.16.2/32

    For non-routing L2 and separate VLAN interface:

    interface 1/1/12
    no shutdown
    no routing
    mtu 9198

interface vlan 2122
    description voip
    ip mtu 9198
    ip address 10.9.22.3/24


    ------------------------------
    Herman Robers
    ------------------------
    If you have urgent issues, always contact your HPE Aruba Networking partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact HPE Aruba Networking TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or HPE Aruba Networking.

    In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
    ------------------------------

    Original Message


  • 4.  RE: HP ProCurve to ArubaOS-CX Jumbo Frames configuration

    Posted Mar 22, 2025 06:34 AM

    One piece of advice: don't use LAG with ESXi vSwitches, especially with iSCSI. LAG leaves the to-host traffic distribution to the switch's random hashing algorithm.

    Instead, use port groups or VMK NICs with explicit fail-over order. That gives you control over to-host traffic distribution, as both egress and ingress traffic follows your explicit order.


    Original Message


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