Virtual Private Networks (VPN)
Generic Routing Encapsulation (GRE)
TX54 User Guide
487
Generic Routing Encapsulation (GRE)
Generic Routing Encapsulation (GRE) is an IP packet encapsulation protocol that allow for networks
and routes to be advertized from one network device to another. You can use GRE to encapsulate a
wide variety of network layer protocols inside virtual point-to-point links over an IP network.
Configuring a GRE tunnel
Configuring a GRE tunnel involves the following items:
Required configuration items
n
A GRE loopback endpoint interface.
n
GRE tunnel configuration:
l
Enable the GRE tunnel.
The GRE tunnels are enabled by default.
l
The local endpoint interface.
l
The IP address of the remote device/peer.
Additional configuration items
n
A GRE key.
n
Enable the device to respond to keepalive packets.
Task One: Create a GRE loopback endpoint interface
WebUI
1. Log into the TX54 WebUI as a user with full Admin access rights.
2. On the menu, click
System
. Under
Configuration
, click
Device Configuration
.
The
Configuration
window is displayed.
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