Ip Lisp Nat-Transversal - Cisco Nexus 7000 Series Command Reference Manual

Cisco Nexus 7000 Series LISP Commands
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .

ip lisp nat-transversal

To configure an egress tunnel router (ETR) with a private locator that is sited behind a NAT device to
dynamically determine its NAT-translated public locator for use in Map-Register and Map-Reply
messages, use the ip lisp nat-transversal command. To remove this functionality, use the no form of
this command.
This command has no arguments or keywords.
Syntax Description
None
Defaults
Interface configuration mode
Command Modes
network-admin
Supported User Roles
vdc-admin
Command History Release
5.0(1.13)
When an ETR is sited behind a NAT device, its routing locator belongs to the private address space that
Usage Guidelines
the NAT device translates to a public globally routed address. The ETR needs to know this public global
locator address because this address is required for use in Map-Register and Map-Reply messages.
When you enter the ip lisp nat-transversal command, the ETR determines its own public global locator
dynamically. When configured, the ETR sends a LISP Echo-Request message to the configured
Map-Server out the interface under which this command is configured. The Map Server replies with an
Echo-Reply message that includes the source address from the Echo Request, which is the
NAT-Translated public global locator address.
The ip lisp nat-transversal is useful when the dynamic keyword is used with the ip lisp
database-mapping in order to dynamically determine the routing locator rather than statically defining
it.
This command does not require a license.
This example shows how to configure the ETR to dynamically determine its public global routing locator
Examples
when it is behind a NAT device:
switch# configuration terminal
switch(config)# interface Ethernet 2/0
switch(config-if)# ip lisp nat-transversal
OL-25345-01
ip lisp nat-transversal
no ip lisp nat-transversal
Modification
This command was introduced.
Cisco Nexus 7000 Series NX-OS LISP Command Reference
ip lisp nat-transversal
LSP-63