How to setup L2 GRE Tunnel between Aruba Controller and Mobility Access Switch(MAS)?
Layer-2 GRE tunnels allow us to have the same VLAN in multiple locations (separated by a Layer-3 network) and be connected. The forwarding method for a Layer-2 GRE tunnel is bridging.
However, the drawback of using Layer-2 GRE tunnels is that all broadcasts are flooded through the tunnel, adding traffic load to the network
Configuration on CLI ===================== SYNTAX ======= Controller ========== interface tunnel <id> description <description> tunnel mode gre 0 tunnel source <Controller-ip vlan> tunnel destination <switch-ip> trusted tunnel <vlan to be tunneled> ! MAS ==== interface tunnel ethernet <id> switching-profile "vlan to be tunneled" source-ip <Switch-ip vlan> destination-ip <Controller-ip> ! EXAMPLE ======= Controller ========== interface tunnel 1 description "Tunnel Interface" tunnel mode gre 0 tunnel source vlan 193 tunnel destination 10.17.169.226 trusted tunnel vlan 50 ! MAS ==== interface tunnel ethernet "1" switching-profile "vlan50" source-ip vlan 185 destination-ip 10.17.170.227 !
1. Check the output "show ip interface brief" and the tunnel interface should show UP.
2. Ping either side of the L3 tunnel interface and it should be pingable.
3. Connect a laptop on either sides and ping each other and it should ping.