Concept Guide

Table Of Contents
Parameter Description Range Default
IPv6: 1500
no
Negates any configured parameter.
shutdown
Causes a hard shutdown of the interface.
trusted
l When Trusted is enabled:
Any device can send any traffic through the
GRE tunnel without having to be
authenticated.
l When Trusted is disabled:
Any device that is a source of traffic and is
sent through the tunnel must be
authenticated to be able to send the traffic.
If the device is not authenticated, traffic
from that device will be subject to the
restrictions of the Initial Role specified in
the Wired Access AAA Profile. This is the
default.
For related information, see aaa
authentication wired.
Disabled
tunnel
Configures tunneling. The default is an IPv4
Layer-3 GRE tunnel.
mode gre
ip
destination
The destination IP address for the GRE tunnel
endpoint.
l <ip-addr>
IPv4 address for the GRE tunnel's endpoint.
l ipv6 <ipv6-addr>
IPv6 address for the GRE tunnel's endpoint.
l <remote-node-destination-ip>
This option provides branch controller
support for the case in which the branch
controller receives all its configuration data
from the master controller. In the remote-
node profile on the master, you can specify
the tunnel's destination as remote-node-
master-ip. When this configuration is
applied on the branch controller, the tunnel
destination is replaced with the branch
controller's specified master IP address.
keepalive
Enables sending of periodic keepalive frames
on the tunnel to determine the tunnel status
(up or down).
You can optionally set the interval at which
keepalive frames are sent, and the number of
times the frames are resent before a tunnel is
considered to be down.
Disabled
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