Virtual PrivateNetworks(VPN) Generic Routing Encapsulation (GRE)
IX20 User Guide
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GREtunnels are enabled by default. To disable:
(config vpn iptunnel gre_example)> enable false
(config vpn iptunnel gre_example)>
4. Set the mode:
(config vpn iptunnel gre_example)> type value
(config vpn iptunnel gre_example)>
where value is either:
n
gre: Standard GREpoint-to-point protocol.
n
mgre: multipoint GRE protocol.
5. Set the local endpoint to the GRE endpoint interface created in Task One, for example:
(config vpn iptunnel gre_example)> local /network/interface/gre_endpoint
(config vpn iptunnel gre_example)>
6. If type is set to gre, set the IPaddressof the GREendpoint on the remote peer:
(config vpn iptunnel gre_example)> remote ip_address
(config vpn iptunnel gre_example)>
7. (Optional) Set a key that will be inserted in GREpackets created by this tunnel.
The key must match the key set by the remote endpoint.
(config vpn iptunnel gre_example)> key value
(config vpn iptunnel gre_example)>
where value is an interger between 0 and 4294967295, or an IPaddress.
8. (Optional) Enable the device to reply to Cisco GREkeepalivepackets:
(config vpn iptunnel gre_example)> keepalive true
(config vpn iptunnel gre_example)>
9. (Optional) Enable the device to allow packets destined for an addresswhich is not explicitly in
the routing table to exit the IPtunnel:
(config vpn iptunnel gre_example)> open_routing true
(config vpn iptunnel gre_example)>
10. Save the configuration and apply the change
(config vpn iptunnel gre_example)> save
Configuration saved.
>
11. Typeexit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
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