Users Guide

Table Of Contents
68 | Network Parameters Dell PowerConnect ArubaOS 5.0 | [User Guide
Creating a Tunnel Interface
To create a GRE tunnel on the controller, you need to specify the following:
z Tunnel ID: this can be a number between 1 and 2147483647.
z IP address and netmask for the tunnel.
z Tunnel source: the local endpoint for the tunnel on the controller. This can be one of the following:
Loopback address of the controller
A specified IP address
A specified VLAN
z Tunnel destination: the IP address of the remote endpoint of the tunnel on the other GRE device.
Using the WebUI
1. Navigate to the Configuration > Network > IP > GRE Tunnels page.
2. Click Add.
3. Enter the tunnel ID.
4. Enter the IP address and netmask for the tunnel.
5. Select (check) Enabled to enable the tunnel interface.
6. Select the tunnel source, if it is not the loopback address of the controller. If you select IP Address, enter the
IP address for the tunnel source. If you select VLAN, select the ID of the VLAN.
7. Enter the IP address of the tunnel destination.
8. Click Apply.
Using CLI
interface tunnel <id>
tunnel mode gre ip
ip address <ipaddr> <netmask>
no shutdown
tunnel source {<ipaddr>| loopback | vlan <vlan>}
tunnel destination <ipaddr>
Directing Traffic into the Tunnel
You can direct traffic into the tunnel by configuring one of the following:
z Static route, which redirects traffic to the IP address of the tunnel
z Firewall policy (session-based ACL), which redirects traffic to the specified tunnel ID
Static Routes
You can configure a static route that specifies the IP address of a tunnel as the next-hop for traffic for a specific
destination. See “Configuring Static Routes” on page65 for descriptions of how to configure a static route.
Firewall Policy
You can configure a firewall policy rule to redirect selected traffic into a tunnel.
Traffic redirected by a firewall policy rule is not forwarded to a tunnel that is “down” (see “Tunnel Keepalives” on
page69 for more information on how GRE tunnel status is determined). If you have more than one GRE tunnel
configured, you can create multiple firewall policy rules with each rule redirecting the same traffic to different
tunnels. If the tunnel in the first traffic redirect rule is down, then the tunnel in the subsequent traffic redirect
rule is used instead.