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ARUBA 2930F multiple IP adresses in one VLAN/Subnet

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  • 1.  ARUBA 2930F multiple IP adresses in one VLAN/Subnet

    Posted Apr 01, 2021 10:53 AM
    Hello,

    I have an issue with migrating from Cisco to Aruba switch.
    I cannot configure 2 IP Addresses in same VLAN/subnet on Aruba.

    Specifically:
    On Cisco switch there is next configuration:
    interface Vlan 100
    ip address 192.168.100.1 255.255.255.0
    ip address 192.168.100.254 255.255.255.0 secondary
    ;
    This config is okay, but when I try to configure the same on the Aruba 2930f:
    vlan 100
    ip address 192.168.100.1 /24
    ip address 192.168.100.254 /24
    There is error message after that.

    I tried to configure Loopback with IP address 192.168.100.254 - same error.

    Please help with this issue. In general, is this possible on Aruba switches?

    ------------------------------
    Mikhail Novoselov
    ------------------------------


  • 2.  RE: ARUBA 2930F multiple IP adresses in one VLAN/Subnet

    Posted Apr 01, 2021 12:46 PM
    Hi Mikhail, if I recall correctly the VLAN Multinetting (where Multinetting = assigning Multiple IP Addresses to a VLAN) requires that additional VLAN IP Addresses must belong to different Subnets, example:

    vlan 100
    ip address 192.168.100.1 255.255.255.0
    ip address 192.168.101.1 255.255.255.0
    ip address 192.168.102.254 255.255.255.0
    ​


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



  • 3.  RE: ARUBA 2930F multiple IP adresses in one VLAN/Subnet

    Posted Apr 01, 2021 01:23 PM
    Hello,

    Thank you.

    I need several addresses from the same subnet in one Vlan.
    Not Vlan multinetting, but Vlan multiaddressing in same subnet.

    Here is correct Cisco config:

    interface Vlan 100
    ip address 192.168.100.1 255.255.255.0
    ip address 192.168.100.2 255.255.255.0 secondary
    ip address 192.168.100.3 255.255.255.0 secondary
    ip address 192.168.100.4 255.255.255.0 secondary
    ip address 192.168.100.5 255.255.255.0 secondary

    An then I can ping all above ip addresses from host in VLan 100.

    Can I configure the same on aruba switch?

    ------------------------------
    Mikhail Novoselov
    ------------------------------



  • 4.  RE: ARUBA 2930F multiple IP adresses in one VLAN/Subnet

    Posted Apr 01, 2021 06:54 PM
    If I'm not mistaken that is not possible on ArubaOS-Switch operating system used by some Aruba Switch Series like the Aruba 2930F.

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