ADTRAN AOS Version R10.1.0 Command Reference Manual page 981

Command Reference Guide
interface tunnel <number> gre ip
Use the interface tunnel gre ip command to create a Generic Routing Encapsulation (GRE) tunnel and
enter the tunnel's configuration mode. This command specifies that the tunnel is in GRE mode, and that it
is an Internet Protocol version 4 (IPv4) tunnel. When this command is used, the created tunnel interface
will encapsulate all IP traffic (both IPv4 and IPv6) in an IPv4/GRE delivery header. Use the no version of
this command to remove the IPv4 GRE tunnel.
Syntax Description
<number>
Default Values
By default, no tunnels are created. If a tunnel is created, it is in GRE mode by default.
Command History
Release R10.1.0
Functional Notes
The interface tunnel gre ip command replaces the tunnel mode gre command used from the Tunnel
interface in AOS firmware versions prior to R10.1.0. When the command is entered with the gre ip
parameter, and a new tunnel interface is being created, the parameter creates the tunnel interface,
specifies that all traffic (both IPv4 and IPv6) is encapsulated in an IPv4/GRE delivery header, and enters
the tunnel's configuration mode. If the gre ip parameter is NOT used and the tunnel interface has not been
previously created, an error is generated because the tunnel mode must be specified when creating a new
tunnel interface. If the gre ip parameter is NOT used and the tunnel interface has been previously created,
the command enters the tunnel's configuration mode.
Usage Examples
The following example creates a new tunnel interface, specifies the tunnel's mode as GRE, and enters the
tunnel's configuration mode:
(config)#interface tunnel 1 gre ip
(config-tunnel 1)#
60000CRG0-35E
Specifies the tunnel's numerical label identifier. Valid range is 1 to 1024.
Command was introduced.
Copyright © 2012 ADTRAN, Inc.
Global Configuration Mode Command Set
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