Cisco GRS Configuration Manual page 59

Implementing Carrier Grade NAT on Cisco IOS XR Software
SUMMARY STEPS
1. configure
2. service cgn instance-name
3. service-type nat44 nat1
4. inside-vrf vrf-name
5. map [outside-vrf outside-vrf-name] address-pool address/prefix
6. end or commit
DETAILED STEPS
Command or Action
Step 1 configure
Example:
RP/0/RP0/CPU0:router# configure
Step 2 service cgn instance-name
Example:
RP/0/RP0/CPU0:router(config)# service cgn
cgn1
RP/0/RP0/CPU0:router(config-cgn)#
Step 3 service-type nat44 nat1
Example:
RP/0/RP0/CPU0:router(config-cgn)#
service-type nat44 nat1
Step 4 inside-vrf vrf-name
Example:
RP/0/RP0/CPU0:router(config-cgn-nat44)#
inside-vrf insidevrf1
RP/0/RP0/CPU0:router(config-cgn-invrf)#
Step 5
map [outside-vrf outside-vrf-name] address-pool
address/prefix
Example:
RP/0/RP0/CPU0:router(config-cgn-invrf)# map
outside-vrf outside vrf1 address-pool
10.10.0.0/16
or
RP/0/RP0/CPU0:router(config-cgn-invrf)# map
address-pool 100.1.0.0/16
Step 6 end or commit
Example:
RP/0/RP0/CPU0:router(config-cgn-invrf-afi)#
end
or
OL-32659-01
Purpose
Enters global configuration mode.
Configures the instance named cgn1 for the CGN application and
enters CGN configuration mode.
Configures the service type keyword definition for CGN NAT44
application.
Configures an inside VRF named insidevrf1 and enters CGN inside
VRF configuration mode.
Configures an inside VRF to an outside VRF and address pool
mapping.
Saves configuration changes.
• When you issue the end command, the system prompts you
to commit changes:
Uncommitted changes found, commit them before exiting
(yes/no/cancel)?
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
Configuring the Policy Functions for the Carrier Grade NAT
49