GRE (Generic routing encapsulation) tunneling can be configured to bridge Ethernet packets between WLANs and a remote WLAN gateway over a GRE tunnel. The tunneling of 802.3 packets using GRE is an alternative to MiNT or L2TPv3. Related features like ACLs for extended VLANs are still available using layer 2 tunneling over GRE.
Using GRE, access points map one or more VLANs to a tunnel. The remote endpoint is a user-configured WLAN gateway IP address, with an optional secondary IP address should connectivity to the primary GRE peer be lost. VLAN traffic is expected in both directions in the GRE tunnel. A WLAN mapped to these VLANs can be either open or secure. Secure WLANs require authentication to a remote RADIUS server available within your deployment using standard RADIUS protocols. access points can reach both the GRE peer as well as the RADIUS server using IPv4.
The GRE tunnel main screen displays existing GRE Tunnel configuration. Select and review an existing tunnel configuration to determine if a new configuration needs to be created or an existing configuration needs to be modified.
To override an access point's GRE tunnel configuration.
The GRE Tunnel screen displays.
