Controller Based WLANs

Does Aruba support GRE tunnel between master and local controllers ?

Environment- This article applies to all the versions of Aruba OS and controllers

Answer- 

Aruba does support GRE tunnel between master and local controllers.
However the GRE tunnels between master and local should use their "switch-IPs" as tunnel endpoints.
When the GRE tunnel endpoint is configured with the VRRP IP and not the switch ip of the master, the heartbeat replies on local pick up the route-cache entry for ike trigger. This results in heartbeats getting dropped and the tunnel may not come up properly.

"show datapath route-cache table" (this is the l2/l3 mapping table in the forwarding plane, since the local controller will prefer to choose the physical ip rather than the virtual ip.
 
Internal Note-Per Bug# 78949, 103233
 
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‎04-06-2015 04:03 AM
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