Cisco GRS User Manual

PurposeCommand or Action
Configures the instance named cgn1 for the CGN application and enters
CGN configuration mode.
service cgn instance-name
Example:
RP/0/RP0/CPU0:router(config)# service
cgn cgn1
RP/0/RP0/CPU0:router(config-cgn)#
Step 2
Configures the active and standby locations for the CGN application.
service-location preferred-active node-id
[preferred-standby node-id]
Step 3
Example:
RP/0/RP0/CPU0:router(config-cgn)#
service-location preferred-active
0/1/CPU0 preferred-standby 0/4/CPU0
Saves configuration changes.end or commit
Example:
RP/0/RP0/CPU0:router(config-cgn)# end
or
RP/0/RP0/CPU0:router(config-cgn)# commit
Step 4
•
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 configuration file and remain within the configuration
session.
Configuring Multiple Public Address Pools
Perform the following steps to configure multiple public address pools for an inside VRF.
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
48 OL-32659-01
Implementing Carrier Grade NAT on Cisco IOS XR Software
Configuring the Policy Functions for the Carrier Grade NAT

Cisco GRS Specifications

General

Product Type	Router
Port Interfaces	Multiple 10GE, 40GE, and 100GE ports
Operating System	Cisco IOS XR
Redundancy	Yes
Power Supply	Dual or multiple power supplies

Summary

Preface

Changes to This Document

Lists technical changes made to the document since its first release.

Obtaining Documentation and Submitting a Service Request

Information on obtaining documentation, using Cisco Bug Search Tool, and submitting service requests.

New and Changed Carrier Grade NAT Feature Information

New and Changed Carrier Grade NAT Features

Lists features introduced or changed in Cisco IOS XR Carrier Grade NAT configuration.

Implementing Carrier Grade NAT on Cisco IOS XR Software

Carrier Grade NAT Overview and Benefits

Provides an overview of Carrier Grade NAT implementation and its advantages.

Information About Carrier Grade NAT

Details information about implementing NAT using ICMP and TCP protocols.

Cisco Carrier NAT Applications

Lists applications deployed on the CGSE line card for Carrier Grade NAT.

Policy Functions

Explains various policy functions related to Carrier Grade NAT.

Implementing Carrier Grade NAT on Cisco IOS XR Software

Details tasks to get started with CGN configuration.

Configuration Examples for Implementing the Carrier Grade NAT

Provides practical examples for configuring Carrier Grade NAT.

External Logging

Bulk Port Allocation

Allocates blocks of ports to reduce volume of log data generated by NAT sessions.

Session logging

Includes destination IP and port information in NAT translation records for Netflow or Syslog.

Syslog Logging

Configures Syslog logging for NAT table entries.

Frequently Asked Questions (FAQs)

Answers common questions about external logging features.