tunnel keepalive
Configure the tunnel keepalive target, interval and attempts.
Syntax
tunnel keepalive {
ip-address | ipv6-address
}[interval {
seconds
}] [attempts
{
count
| unlimited}]
To disable the tunnel keepalive probes use the
no
tunnel keepalive
command.
Parameters
ip-address ipv6
address
Enter the
IPv4 or IPv6 address
of the peer to which the keepalive probes will be
sent.
interval seconds
Enter the keyword
interval
then the interval time, in seconds, after which the restart
process to keepalive probe packets.
The range is from 5 to 255. The default is 5.
count
(OPTIONAL) Enter the keyword
count
to count packets processed by the filter.
The range is from 3 to 10. The default is 3.
unlimited
Enter the keyword
unlimited
to specify the unlimited number of keepalive probe packets.
Defaults
Tunnel keepalive is disabled.
Command Modes
INTERFACE TUNNEL
Command History
This guide is platform-specific. For command information about other platforms, see the relevant
Dell Networking
OS Command Line Reference Guide
.
Version
Description
9.10(0.0)
Introduced on the S6100–ON.
9.8(1.0)
Introduced on the Z9100–ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.7(0.0)
Introduced on the S6000-ON.
9.5(0.1)
Introduced on the Z9500.
9.4(0.0)
Introduced on the S4810, S4820T, S6000 and Z9000.
Usage Information
Enabling tunnel keepalive causes ICMP echo packets to be sent to the keepalive target. The ICMP echo will be
sourced from the tunnel interface logical IPv4 or IPv6 address and will be tunnel encapsulated. The response will
be accepted whether it returns tunnel encapsulated or not.
When configuring tunnel keepalive at both end points of a tunnel interface it is recommended to set the tunnel
keepalive target to the logical IPv4 or IPv6 address of the far end tunnel peer, rather than to the tunnel
destination. This reduces the chance of both ends of the tunnel staying in keepalive down state. If both ends get
1634
Tunneling
