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1754 CHAPTER 103: GRE CONFIGURATION COMMANDS
interface tunnel
Syntax interface tunnel number
undo interface tunnel number
View System view
Parameter number: Number of a tunnel interface, in the range 0 to 1023. The volume of
tunnels is subject to the total number of interfaces and the capacity of memory.
Description Use the
interface tunnel command to create a tunnel interface and enter tunnel
interface view.
Use the
undo interface tunnel command to remove a tunnel interface.
By default, there is no tunnel interface on the device.
■ Executing the interface tunnel command, you enter tunnel interface view if
the tunnel interface exists.
■ A tunnel interface number has only local significance. Therefore, both ends of a
tunnel can have the same interface number or different interface numbers.
Related command: source, destination, gre key, gre checksum, and tunnel-protocol on page
887.
Example # Create an interface named Tunnel3 and enter its view.
<Sysname> system-view
[Sysname] interface tunnel 3
[Sysname-Tunnel3]
keepalive
Syntax keepalive [ seconds [ times ]]
undo keepalive
View Tunnel interface view
Parameter seconds: Interval between transmitting keepalive packets, in the range 1 to
32,767 seconds. The default value is 10.
times: Maximum number of attempts for transmitting a keepalive packet, in the
range 1 to 255. The default value is 3.
Description Use the
keepalive command to enable the GRE keepalive function to detect the
status of the tunnel interfaces and set the keepalive interval and the maximum
number of attempts for transmitting a keepalive packet.