Tunnel Mode - Cisco ASR 9000 Series Reference Manual

Generic Routing Encapsulation Commands

tunnel mode

To configure the encapsulation mode of the tunnel interface, use the tunnel mode command. To revert the
encapsulation to the default IPv4 GRE tunnel mode, use the no form of this command.
tunnel mode {gre {ipv4 | ipv6} | ipv4 | ipv6}
no tunnel mode
Syntax Description
Syntax Description
gre
gre
ipv4
ipv6
Command Default
The default tunnel mode is set as a GRE tunnel over an IPv4 transport network.
Command Modes
interface configuration
Command History
Release
Release 4.2.0
Release 5.2.2
Release 5.3.1
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
ipv4
ipv6
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
Modification
This command was introduced.
Support for GRE tunnel on an IPv6 transport network.
Support for IP in IP tunnels.

tunnel mode

Specifies the tunnel as a GRE
tunnel over an IPv4 transport
network.
Specifies the tunnel as a GRE
tunnel over an IPv6 transport
network.
Specifies the tunnel as an IP
in IP tunnel over an IPv4
transport network.
Specifies the tunnel as an IP
in IP tunnel over an IPv6
transport network.
6.1.x
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