Wireless Access

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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.
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can Instant GRE VPN terminate on a controller VRRP address?

  • 1.  can Instant GRE VPN terminate on a controller VRRP address?

    Posted Nov 13, 2013 04:28 AM

    I've tried to do this once before, but didn't work at the time.  I have to set the VPN host to be the physical address of the controller and in the event of a failure we need to manually change the address in the Instant config.  This is not ideal for a large distributed enterprise.

     

    Unfortunately I don't have a chance to test again.



  • 2.  RE: can Instant GRE VPN terminate on a controller VRRP address?

    Posted Nov 13, 2013 09:36 AM

    Yes...this should work.  HOWEVER, in the routing table config for VPN on the IAP, you MUST define the physical interfaces for that detination subnet.  

     

    For example

     

    Consider an organization with 2 datacenters: DC1 and DC2: Each datacenter has a pair of VRRP based redundant controllers.

      • Primary datacenter (DC1)
        • The physical IP of the master controller in the primary datacenter is 10.68.33.6
        • The physical IP of the VRRP backup controller in the primary datacenter is 10.68.33.7
        • The Virtual IP between the master and VRRP backup controller in the primary datacenter is 10.68.33.8
      • Backup datacenter (DC2)
        • The physical IP of the master controller in the backup datacenter is 10.68.48.6
        • The physical IP of the VRRP backup controller in the backup datacenter is 10.68.48.7
        • The Virtual IP between the master and VRRP backup controller in the backup datacenter is 10.68.48.8
      •  In this case the routing profile on a IAP branch that wants to tunnel 10.0.0.0 /8 will be :
        • 10.0.0.0 255.0.0.0 10.68.33.6
        • 10.0.0.0 255.0.0.0 10.68.33.7
        • 10.0.0.0 255.0.0.0 10.68.48.6
        • 10.0.0.0 255.0.0.0 10.68.48.7


  • 3.  RE: can Instant GRE VPN terminate on a controller VRRP address?

    Posted Nov 13, 2013 10:09 AM

    excellent, that's great to know. Thanks Seth.



  • 4.  RE: can Instant GRE VPN terminate on a controller VRRP address?

    Posted Nov 15, 2013 08:02 AM

    Seth,

     

    What about on the controller end for the GRE tunnel?  Can it terminate on the VC address, or does it still need to be the IAP address?

     

     



  • 5.  RE: can Instant GRE VPN terminate on a controller VRRP address?

    Posted Nov 15, 2013 08:49 AM
    The tunnel is initiated by the vc. No need to worry about the address of the vc. It is assigned an inner ip from the controller's l2tp pool.

    Sent from my iPad


  • 6.  RE: can Instant GRE VPN terminate on a controller VRRP address?

    Posted Nov 15, 2013 08:57 AM

    for a GRE?  I didn't think it needs an inner ip for that.



  • 7.  RE: can Instant GRE VPN terminate on a controller VRRP address?

    Posted Nov 15, 2013 09:00 AM
    I don't believe so.

    Sent from my iPad