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Virtual Private Networks (VPN)
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
A GRE loopback endpoint interface.
n
GRE tunnel configuration:
n
Enable the GRE tunnel.
l
The GRE tunnels are enabled by default.
The local endpoint interface.
l
The IP address of the remote device/peer.
l
Additional configuration items
A GRE key.
n
Enable the device to respond to keepalive packets.
n
Task One: Create a GRE loopback endpoint interface
Web
1. Log into Digi Remote Manager, or log into the local Web UI as a user with full Admin access
rights.
2. Access the device configuration:
Remote Manager:
a. Locate your device as described in
device.
b. Click the Device ID.
c. Click Settings.
d. Click to expand Config.
Local Web UI:
IX30 User Guide
Generic Routing Encapsulation (GRE)
Use Digi Remote Manager to view and manage your
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