Configuration procedure

1. Enter system view.

system-view

N/A

2. Create a tunnel interface and enter tunnel interface view.

interface tunnel interface-number

By default, a device has no tunnel interface.

3. Configure an IPv4 address for the tunnel interface.

ip address ip-address { mask | mask-length }

By default, a tunnel interface has no IPv4 address.

4. Set the tunnel mode to GRE over IPv4.

tunnel-protocol gre

Optional.

By default, the tunnel is a GRE over IPv4 tunnel.

You must configure the same tunnel mode on both ends of a tunnel. Otherwise, packet delivery will fail.

5. Configure the source address or interface for the tunnel interface.

source { ip-address | interface-type interface-number }

By default, no source address or interface is configured for a tunnel interface.

6. Configure the destination address for the tunnel interface.

destination ip-address

By default, no destination address is configured for a tunnel interface.

7. Configure a route for packet forwarding through the tunnel.

See Layer 3—IP Routing Configuration Guide.

Each end of the tunnel must have a route (static or dynamic) through the tunnel to the other end.

8. Return to system view.

quit

N/A

9. Configure the device to discard the IPv4-compatible IPv6 packets.

tunnel discard ipv4-compatible-packet

Optional.

By default, the device does not discard the IPv4-compatible IPv6 packets.