Service Manual

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
Version Description
9.8(0.0) Introduced on the S3048-ON and S4048-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
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.
1782
Tunneling