Cisco Nexus 7000 Series Command Reference Manual page 51

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 itr
To configure a Cisco NX-OS device to act as an IPv4 LISP Ingress Tunnel Router (ITR), use the ip lisp
itr command. To remove LISP ITR functionality, use the no form of this command.
This command has no arguments or keywords.
Syntax Description
None
Defaults
Global configuration mode
Command Modes
network-admin
Supported User Roles
vdc-admin
Command History Release
5.0(1.13)
Use the ip lisp itr command to enable the Cisco NX-OS device to perform the IPv4 LISP Ingress Tunnel
Usage Guidelines
Router (ITR) functionality.
When a Cisco NX-OS device is configured as an ITR, if a packet is received for which no IPv4
destination address prefix match exists in the routing table or which matches a default route (you can
configure that the source address of the packet matches an IPv4 EID-prefix block configured by using
the ip lisp database-mapping command or ip lisp map-cache command, the packet is a candidate for
LISP routing. The ITR looks in the LISP map cache and forwards either the packet, drop the packet, send
a Map-Request, or LISP-encapsulates the packet.
If there is no match in the LISP map cache, the ITR might use one of two methods to obtain an IPv4
EID-to-RLOC mapping. When a Map-Resolver is configured when you enter the ip lisp itr
map-resolver command, the ITR sends its Map-Request in a LISP Encapsulated Control Message
(ECM) to the Map-Resolver. When the ITR is attached to the ALT using the ip lisp alt-vrf command,
the ITR sends its Map-Request directly on the alternate LISP topology (LISP-ALT). The ITR caches the
IPv4 EID-to-RLOC mapping information returned by the associated Map-Reply in its map-cache.
Subsequent packets destined to the same IPv4 EID-prefix block are then LISP-encapsulated according
to this IPv4 EID-to-RLOC mapping entry.
An ITR can also be configured as an ETR. However, the LISP architecture does not require this
Note
requirement.
OL-25345-01
ip lisp itr
no ip lisp itr
Modification
This command was introduced.
Cisco Nexus 7000 Series NX-OS LISP Command Reference
ip lisp itr
LSP-41