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Virtual Private Networks (VPN)
e. For Key, type a four-octet value that matches the key on the remote endpoint.
f. (Optional) Enable keep-alive reply to enable the device to reply to Cisco GRE keep-alive
packets.
g. (Optional) Enable open routing to enable packets destined for an address which is not
explicitly in the routing table to exit the IP tunnel.
4. Assign an IP address to the IP tunnel:
a. Click Network > Interfaces.
b. For Add Interface, type a name for the interface and click .
c. For Zone, select Internal.
d. For Device, select the IP tunnel created above.
e. Click to expand IPv4.
f. For Address, type the IP address and netmask of the tunnel. The netmask must be set to
/32.
IX20 User Guide
Dynamic Multipoint VPN (DMVPN)
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