Users Guide

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 lter.
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
9.7(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 conguring 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.
Tunneling
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