Controller Based WLANs

L2 GRE Tunnel between Aruba Controller and Mobility Access Switch(MAS)?

Aruba Employee
Requirement:

How to setup  L2 GRE Tunnel between Aruba Controller and Mobility Access Switch(MAS)?



Solution:

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:
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
        !


Verification

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.

Version history
Revision #:
2 of 2
Last update:
‎05-04-2016 11:52 AM
Updated by:
 
Contributors
Search Airheads
cancel
Showing results for 
Search instead for 
Did you mean: 
Is this a frequent problem?

Request an official Aruba knowledge base article to be written by our experts.