DELL 9.8(0.0) User Manual

into a keepalive down state that does not clear in a few seconds, then performing 
shutdown - no shutdown sequence on one end should bring both ends back to 
up.

tunnel-mode

Enable a tunnel interface.

.

Syntax

tunnel mode {ipip | ipv6 | ipv6ip}[decapsulate-any]
To disable an active tunnel interface, use the no tunnel mode command.

Parameters

Enable tunnel in RFC 2003 mode and encapsulate IPv4 
and/or IPv6 datagrams inside an IPv4 tunnel.

Enable tunnel in RFC 2473 mode and encapsulate IPv4 
and/or IPv6 datagrams inside an IPv6 tunnel.

Enable tunnel in RFC 4213 mode and encapsulate IPv6 
datagrams inside an IPv4 tunnel.

(Optional) Enable tunnel in multipoint receive-only mode.

Defaults

There is no default tunnel mode.

Command 
Modes

INTERFACE TUNNEL

Command 
History

Version

Description

9.7(0.0)

Introduced on the S6000-ON.

9.5(0.1)

Introduced on the Z9500.

9.4(0.0)

Added the decapsulate-any command.

9.3(0.1)

Introduced on the S6000 and Z9000.

Usage 
Information

To enable a tunnel interface, use this command. You must define a tunnel mode 
for the tunnel to function. If you previously defined the tunnel destination or 
source address, the tunnel mode must be compatible.

Including the decapsulate-any option causes the command to fail if any of the 
following tunnel transmit options are configured: tunnel destination, tunnel dscp, 
tunnel flow-label, tunnel hop-limit, or tunnel keepalive. Conversely, if you 
configure any tunnel allow-remote entries, the tunnel—mode command fails 
unless the decapsulate-any option is included.

Tunneling 

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