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Aruba 2930M 24G IP Translation?

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  • 1.  Aruba 2930M 24G IP Translation?

    Posted Apr 14, 2018 02:16 PM

    I have recently redesigned my entire LAN topology, and am in the process of upgrading, and eliminating some old devices. One of these old units is an Adtran Netvanta 3448 router (R01). My predecessors set this particular device up as the Default Gateway (D/G), and it was set into the network incorrectly. As a result of the D/G status, almost every device with a Static IP lists it as the D/G. This is causing problems as I strive to implement a new firewall and replace other Netvanta routers.

     

    I am working to change the D/G to the true gateway "R00A", but have run into a snag with R01's IP Address.

     

    I have transferred all of the routes from R01, to my main LAN Switch (SW06, the Aruba 2930M 24G PoE+ Switch (JL320A), currently booted to firmware version, WC.16.05.0007), but now need to do something with R01's IP Address, 10.20.62.2.

     

    How can I tell SW06 to translate 10.20.62.2 into 10.20.61.1? This way I don't lose a LOT of critical services on essential servers. Also, this would help me identify every computer with the old D/G in a more reasoned, and calm manner. BOTH R00A and R01 are directly connected to SW06. It would also provide me with the means to turn off this old device.

     

    Thank you,

     

    David



  • 2.  RE: Aruba 2930M 24G IP Translation?

    Posted Apr 14, 2018 03:56 PM
    Hello David,

    I don’t know if I understand you correctly, but it seems that you want a way to keep the devices with static ip pointing to ip address 10.20.60.2 as the default gateway, right? Have thought about using the ip address 10.20.60.2 as secondary on 2930 switch? This way those devices will not atop working during rhe migration.
    Sorry if I understand you wrong.

    Regards.


  • 3.  RE: Aruba 2930M 24G IP Translation?

    Posted Apr 14, 2018 04:21 PM

    Minondas,

     

    That sounds like the ticket! How do I set up the secondary IP Address?

     

    THANK YOU!

     

    David



  • 4.  RE: Aruba 2930M 24G IP Translation?

    Posted Apr 14, 2018 09:23 PM

    Hi David,

     

    The switch will accped a secondary ip that is not on the same subnet of any other ip address configured on the switch, so if your scenario allows it you can simple add a secondary ip to the vlan like the commands below:

     

    vlan 42

       name "Test 42"

       tagged 46

       untagged 14,40

       ip address 10.4.2.1 255.255.255.0

       ip address 10.4.3.1 255.255.255.0

     

     

    If that doen't help and you need a secondary ip address that is on the same subnet as the primary ip, you can create a vrrp on that vlan.

     

     

    router vrrp

       virtual-ip-ping

       ipv4 enable

       exit

    !

    vlan 42

       name "Test 42"

       tagged 46

       untagged 14,40

       ip address 10.4.2.1 255.255.255.0

       ip igmp

       vrrp vrid 1

          virtual-ip-address 10.4.2.3

          enable

          exit

       dhcp-server

       exit

     

    I hope this helps.

     

    Regards.



  • 5.  RE: Aruba 2930M 24G IP Translation?

    Posted Apr 14, 2018 11:21 PM

     

     

     

     

     

     

     

       router vrrp

          virtual-ip-ping

          ipv4 enable

          exit

       !

       vlan 1

          ip igmp

          vrrp vrid 1

             virtual-ip-address 10.20.62.2

          enable

          exit

     

    Thank you for your assistance, and patience.

     

    David



  • 6.  RE: Aruba 2930M 24G IP Translation?
    Best Answer

    Posted Apr 16, 2018 04:43 PM

    Here is what I understand from you scenario.

    If it is correct, you will need to use vrrp like the example below.

    With this configuration you be able to remove the old router from your network, but the devices with static will continue to work as their default gateway IP will be up ont eh switch.

     

     router vrrp

          virtual-ip-ping

          ipv4 enable

          exit

       !

       vlan 1

          ip igmp

          vrrp vrid 1

             virtual-ip-address 10.20.62.2

          enable

          exit

     

     



  • 7.  RE: Aruba 2930M 24G IP Translation?

    Posted Apr 17, 2018 07:57 AM

    One glitch was discovered after I entered the above.

    I lost Internet connectivity on all computers with a Default Gateway of 10.20.62.2.

    VLAN1 -- Default Gateway is 10.20.61.1

    It appears the "vrrp vrid 1" did not pass traffic to the above gateway.

    Any thoughts?

    Thanks,