Users Guide

Table Of Contents
Layer-3 Tunnel Traffic FLow
The traffic flow illustrated by Figure 18 and Figure 19 is as follows:
1. The frame enters the source controller (Controller-1) on VLAN 101.
The IP packet within the frame is routed through Controller-1 into the Layer-3 GRE tunnel.
2. The IP packet is encapsulated in a GRE packet.
3. The GRE packet enters the network on VLAN 10, is routed across the network to destination controller
(Controller-2), and then exits the network on VLAN 20.
The source IP address of the GRE packet is the IP address of the interface in VLAN 10 in Controller 1.
4. The IP packet is de-encapsulated and routed out of the destination controller (Controller-2) on VLAN 202.
Limitations for Static IPv6 Layer-3 Tunnels
ArubaOS does not support the following functions for static IPv6 Layer-3 GREtunnels:
l IPv6 Auto-configuration and IPv6 Neighbor Discovery mechanisms do not apply to IPv6 GRE tunnels.
l The tunnel encapsulation limit and Maximum Transmission Unit (MTU) discovery options are not supported
on IPv6 GRE tunnels.
Configuring a Layer-2 GRE Tunnel
In the WebUI
To configure a Layer-2 GREtunnel for Controller-1 and Controller-2 via the WebUI:
1. Log in to Controller-1.
2. Navigate to Configuration > Network > IP > GRE Tunnels.
The GRETunnels page is displayed.
Figure 20 GRETunnels Page
3. Highlight the line for the tunnel ID of interest and click Edit. The Edit GRE Tunnel screen appears, as
shown in Figure 21.
Dell Networking W-Series ArubaOS 6.5.x | User Guide Network Configuration Parameters | 112