Administrator Guide

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.
9.4(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 allow-remote
Configure an IPv4 or IPv6 address or prefix whose tunneled packets are accepted for decapsulation. If you do not configure
allow-remote entries, tunneled packets from any remote peer address is accepted.
This feature is supported on Dell Networking OS.
Syntax
tunnel allow-remote {ip-address | ipv6-address} [mask]
To delete a configured allow-remote entry use the no tunnel allow-remote command. Any specified
address/mask values must match an existing entry for the delete to succeed. If the address and mask are
not specified, this command deletes all allow-remote entries.
Parameters
ip-address Enter the source IPv4 address in A.B.C.D format.
ipv6–address Enter the source IPv6 address in X:X:X:X::X format.
mask (OPTIONAL) Enter a network mask in /prefix format (/x) or A.B.C.D to match a
range of remote addresses. The default mask is /32 for IPv4 addresses and /128
for IPv6 addresses, which match only the specified address.
Defaults If you do not configure tunnel allow remote , all traffic which is destined to tunnel source address is
decapsulated.
Defaults By default there are no tunnel allow remote entries.
Command Modes INTERFACE TUNNEL
Command
History
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.3(0.1) Introduced on the S6000 and Z9000.
9.4(0.0) Introduced on the S4810, S4820T, S6000 and Z9000.
Usage
Information
You can configure up to eight allow-remote entries on any multipoint receive-only tunnel.
This command fails if the address family entered does not match the outer header address family of the
tunnel mode, tunnel source, or any other tunnel allow-remote.
If you configure any allow-remote , the tunnel source or tunnel mode commands fail if the outer header
address family does not match that of the configured allow-remote.
1260 Tunneling