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Implementing Carrier Grade NAT on Cisco IOS XR Software
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 nat64 stateful instance-name
Example:
RP/0/RP0/CPU0:router(config-cgn)# service-type nat64
stateful nat64-inst
RP/0/RP0/CPU0:router(config-cgn-nat64-stateful)#
Step 4
portlimit value
Example:
RP/0/RP0/CPU0:router(config-cgn-nat64-stateful)#portlimit
66
RP/0/RP0/CPU0:router(config-cgn-nat64-stateful)
Step 5
end or commit
Example:
RP/0/RP0/CPU0:router(config-cgn-nat64-stateful)# end
or
RP/0/RP0/CPU0:router(config-cgn-nat64-stateful)# commit
OL-32659-01
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
Purpose
Enters global configuration mode.
Configures the instance named cgn1 for the CGv6
application and enters CGv6 configuration mode.
Configures the service type keyword definition for
CGv6 Stateful NAT64 application.
Configures a value to restrict the number of ports used
by an IPv6 address.
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)?
[cancel]:
◦ 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
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