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Command Reference Guide
tunnel destination <ip address>
Use the tunnel destination command to specify the IP address to use as the destination address for all
packets transmitted on this interface. Use the no form of this command to clear the tunnel destination
address.
Syntax Description
<ip address>
Default Values
By default, no tunnel destinations are defined.
Command History
Release 9.1
Functional Notes
Until a tunnel interface has a destination IP address defined, it is not operational.
The tunnel destination IP address will be the value put into the destination field of the outer IP header after
generic routing encapsulation (GRE) of the original packet. A route must be defined for the destination
address. Be certain there are no recursive routes by ensuring that a tunnel's destination address will be
routed out a physical interface. There is a possibility of creating a routing loop when tunnel interface traffic
gets routed back to the same tunnel interface or to another tunnel interface, which in turn, does not have a
route out of a physical interface. In either case, the tunnel will go down for a period of one minute, after
which it will come back up to determine if the recursive routes have been resolved. This allows time for
routing protocols to converge on a valid route. If a static route has caused the recursive routing loop, the
tunnel status may oscillate until the route is changed.
Usage Examples
The following example sets the tunnel destination IP address to 192.22.73.101:
(config)#interface tunnel 1
(config-tunnel 1)#tunnel destination 192.22.73.101
60000CRG0-35E
Specifies the IP address to use as the destination address for all packets
transmitted on this interface. IP addresses should be expressed in dotted
decimal notation (for example, 10.10.10.1).
Command was introduced.
Copyright © 2012 ADTRAN, Inc.
Tunnel Interface Command Set
2683
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