Cisco GRS User Manual

PurposeCommand or Action
Enters the address family IPv6 configuration mode.address-family ipv6
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite)# address-family
ipv6
Step 11
Specifies the ServiceApp on which IPv6 traffic enters
and leaves.
interface ServiceApp61
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite-afi)# interface
ServiceApp61
Step 12
Configures the TCP protocol session.protocol tcp
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite-afi)# protocol
tcp
Step 13
This command configures the timeout value in
seconds for ICMP,TCP or UDP sessions for a service
session {initial | active} timeout seconds
Example:
RP/0/RP0/CPU0:router(config-cgn-proto)# session initial
timeout 90
Step 14
instance. For TCP and UDP, you can configure the
initial and active session timeout values. For ICMP,
there are no such options. This configuration is
applicable to all the IPv4 addresses that belong to a
particular service instance. This example configures
the initial session timeout value as 90 for the TCP
session.
Configures the adjustment MSS value as 1100.
msssize
Example:
RP/0/RP0/CPU0:router(config-cgn-proto)# mss 1100
Step 15
Configures the external-logging facility for the DS
LITE instance named dsl1 and enters the external
logging configuration mode.
external-logging netflow9
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite)#
external-logging netflowv9
Step 16
Configures the logging server information for the IPv4
address and port for the server that is used for the
server
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite-extlog)# server
Step 17
netflow-v9 based external-logging facility and enters
external logging server configuration mode.
Configures the netflow server address and port number
to use for netflow version 9 based external logging
facility for DS LITE instance.
address A.B.C.D port port-number
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite-extlog-server)#
address 90.1.1.1 port 99
Step 18
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
OL-32659-01 79
Implementing Carrier Grade NAT on Cisco IOS XR Software
Configuring Dual Stack Lite Instance

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.