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Configuration Examples for Implementing the Carrier Grade NAT
Command or Action
Configuration Examples for Implementing the Carrier Grade
NAT
This section provides the following configuration examples for CGN:
Configuring a Different Inside VRF Map to a Different Outside VRF: Example
This example shows how to configure a different inside VRF map to a different outside VRF and different
outside address pools:
service cgn cgn1
inside-vrf insidevrf1
map outside-vrf outsidevrf1 address-pool 100.1.1.0/24
!
!
inside-vrf insidevrf2
map outside-vrf outsidevrf2 address-pool 100.1.2.0/24
!
service-location preferred-active 0/2/cpu0 preferred-standby 0/3/cpu0
!
interface ServiceApp 1
vrf insidevrf1
ipv4 address 210.1.1.1 255.255.255.0
service cgn cgn1
!
router static
vrf insidevrf1
0.0.0.0/0 serviceapp 1
!
!
interface ServiceApp 2
vrf insidevrf2
ipv4 address 211.1.1.1 255.255.255.0
service cgn cgn1
service-type nat44 nat1
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
84
Implementing Carrier Grade NAT on Cisco IOS XR Software
Purpose
◦ Entering yes saves configuration changes to the running
configuration file, exits the configuration session, and
returns the router to EXEC mode.
◦ Entering no exits the configuration session and returns the
router to EXEC mode without committing the configuration
changes.
◦ Entering cancel leaves the router in the current
configuration session without exiting or committing the
configuration changes.
• Use the commit command to save the configuration changes to
the running configuration file and remain within the configuration
session.
OL-32659-01
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