1756 CHAPTER 103: GRE CONFIGURATION COMMANDS
Related command: interface tunnel and destination.
Example # Create interface Tunnel5 and configure Serial2/0 (192.100.1.1) as its source
interface.
<Sysname> system-view
[Sysname] interface tunnel 5
[Sysname-Tunnel5] source 192.100.1.1
Or
[Sysname-Tunnel5] source serial 2/0
tunnel-protocol gre
Syntax tunnel-protocol gre [ipv6 ]
undo tunnel-protocol
View Tunnel interface view
Parameter ipv6: Sets the tunnel mode to GRE over IPv6.
Description Use the tunnel-protocol gre command to set the GRE tunnel mode.
Use the undo tunnel-protocol to restore the default.
By default, the GRE tunnel mode is GRE over IPv4.
Without the ipv6 keyword, the command sets the GRE tunnel mode to GRE over
IPv4.
Select a tunnel mode according to the network topology and application. Note
that both ends of a tunnel must be configured with the same tunnel mode.
Otherwise, packet delivery will fail.
Related command: interface tunnel.
Example # Set the tunnel mode to GRE over IPv4 for the tunnel between Sysname1 and
Sysname2.
<Sysname1> system-view
[Sysname1] interface tunnel 3
[Sysname1-Tunnel3] tunnel-protocol gre
<Sysname2> system-view
[Sysname2] interface tunnel 2
[Sysname2-Tunnel2] tunnel-protocol gre