GRE Concentrator Configuration

The GRE Concentrator feature supports GRE tunneling between APs and ExtremeWireless WiNG controllers.

With this feature, an AP acts as GRE initiator and creates wireless client tunnels to an ExtremeWireless WiNG controller that is operating as a GRE concentrator tunnel terminator.

The maximum limits on GRE tunnel configuration for each platform are as follows:

Platform Maximum GRE Tunnels Supported
NX5500 512
NX7500 1000
NX9610 1024
CX9000 Not suppported
VX9000 1024

To enable the GRE Concentrator feature, complete the following procedures in the order given:

  1. Configure an ExtremeWireless WiNG controller to operate as a GRE Concentrator tunnel terminator. See Configure a GRE Concentrator Profile for a ExtremeWireless WiNG Controller.
  2. Configure VLANs for an AP. See Interface Virtual Tab.
    Note

    Note

    GRE Concentrator can terminate GRE tunnels mapped to more than one VLAN. You must configure one Native VLAN that is capable of transmitting untagged (default) or tagged traffic. All other VLANs will transmit tagged traffic. Select the Native VLAN when you configure the GRE tunnel profile in the next step.
  3. Configure the GRE peer-to-peer settings on the AP and try to reach the concentrator using the ping command. See GRE Tunnel Configuration.
You can view the GRE Concentrator connection information on the ExtremeWireless WiNG controller using the following CLI command:
show gre concentrator-tunnels
9037761-04 Rev AB