HP VPN Firewall Appliances VPN Configuration Guide

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Figure 34 Adding a P2MP GRE tunnel interface (Tunnel0)
3. Create a GRE over IPv4 tunnel interface, with the tunnel interface number being 1:
a. Select VPN > GRE > GRE from the navigation tree.
b. Click Add.
c. Enter 1 in the Tunnel Interface field.
d. Enter IP address/mask 192.168.22.2/24.
e. Select Management from the Zone list. (Select a security zone according to your network
configuration.)
f. Enter the tunnel source IP address 10.1.1.2 and the tunnel destination IP address 10.1.1.1.
g. Click Apply.
Figure 35 Adding a GRE over IPv4 tunnel interface (Tunnel1)
4. Configure a static route from Firewall B through interface Tunnel0 to the branch network: