Ip Lisp Proxy-Etr - 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 proxy-etr

To configure the Cisco NX-OS device to act as the IPv4 Locator/ID Separation Protocol (LISP) Proxy
Egress Tunnel Router (PETR), use the ip lisp proxy-etr command. To remove the LISP PETR
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 proxy-etr command to enable the IPv4 LISP Proxy Egress Tunnel Router (PETR)
Usage Guidelines
functionality on the Cisco NX-OS device. The Cisco NX-OS device accepts LISP-encapsulated packets
from an ingress tunnel router (ITR) or Proxy ITR (PITR) that are destined to non-LISP sites,
deencapsulates them, and then forwards them natively toward the non-LISP destination.
PETR services may be necessary in several cases. For example, by default, when a LISP site forwards
packets to a non-LISP site natively (not LISP encapsulated), the source IP address of the packet is that
of a site EID. If the provider side of the access network is configured with strict unicast reverse path
forwarding (uRPF) or an anti-spoofing access-list, it would consider these packets to be spoofed and
drop them because EIDs are not advertised in the provider default free zone (DFZ). Instead of natively
forwarding packets destined to non-LISP sites, the ITR encapsulates these packets using the site locator
as the source address and the PETR as the destination address. Packets destined for LISP sites follow
normal LISP forwarding processes and are sent directly to the destination ETR.
When an ITR or PITR requires IPv4 PETR services, you must configure ITR or PITR to forward IPv4
Note
EID packets to the PETR by using the ip lisp use-petr command.
This command does not require a license.
OL-25345-01
ip lisp proxy-etr
no ip lisp proxy-etr
Modification
This command was introduced.
Cisco Nexus 7000 Series NX-OS LISP Command Reference
ip lisp proxy-etr
LSP-65