R3721-F3210-F3171-HP High-End Firewalls VPN Configuration Guide-6PW101

Figure 23 Tunnel list

Table 3 Field description

Field Descri

tion

Tunnel Interface Name of the tunnel interface

Tunnel Dest Address IP address of the tunnel destination

Branch Network

Address/Mask

IP address and mask of the branch network

GRE Key

GRE key of the tunnel, used to identify the priority of the tunnel entry. If the tunnel peer

device is not configured with a GRE key, nothing will be displayed for this field.

Basic P2MP GRE tunnel configuration example

NOTE:

In this configuration example, either Device A or Device B is the firewall.

Network requirements

A company has a network at the headquarters and each of its branches. It is required to implement

communication between the headquarters and the branches through GRE. Figure 24 sh

ows a simplified

scenario, where there is only one branch.

• Device A is the gateway at the headquarters, and Device B is the gateway of the branch.

• Host A is an internal user at the headquarters and Host B is an internal user at the branch. A GRE

tunnel is established between Device A and Device B to implement communication between Host A

and Host B.

If you use P2P GRE tunnels, the number of GRE tunnels to be configured is the same as that of the

branches. To simplify the configuration at the headquarters, you can create a P2MP GRE tunnel interface

on Device A, and configure a GRE over IPv4 tunnel interface on Device B.

NOTE:

This example gives only the configuration of one branch gateway (Device B). The confi

uration on other

branch gateways is similar.