Table of Contents

Contents
Introduction
System Requirements

Minimum Memory Recommendations
Hardware Supported
Determining the Software Version
Upgrading to a New Software Release
Other Firmware Code
Feature Set Tables

New and Changed Information

New Software Features in Cisco IOS Release 12.1(2)XH

Transparent Common Channel Signaling (T-CCS) on Cisco 2600, 3600, 7200 and 7500 Series Routers
Feature Group D Support on Digital T1/E1 Packet Voice Trunk Network Modules
ISDN Enhancements for Digital T1/E1 Packet Voice Trunk Network Modules on Cisco  2600 and 3600 Series Routers
E1 R2 and Channel-Associated Signaling on the Digital T1/E1 Packet Voice Trunk Network Module
Configuring Digital T1/E1 Packet Voice Trunk Network Modules for WAN Data Traffic
Network Side PRI Signaling, Trunking, and Switching
Caller ID on Cisco 2600, 3600, and MC3810 Series
Multicast Hoot and Holler Conferencing over IP
T1/E1 Multiflex VWIC Enhancements

Important Notes

Product Number Change
MIBs

Caveats

Open Caveats---Cisco IOS Release 12.1(2)XH

Related Documentation

Release-Specific Documents
Platform-Specific Documents
Feature Modules
Cisco IOS Software Documentation Set

Documentation Modules
Cisco IOS Release 12.1 Documentation Set

Obtaining Documentation

World Wide Web
Documentation CD-ROM
Ordering Documentation

Obtaining Technical Assistance

Cisco Connection Online
Technical Assistance Center
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
Documentation Feedback

Release Notes for Cisco 3600 Series for Cisco IOS Release 12.1(2)XH

June 19, 2000

Note You can find the most current Cisco IOS documentation on Cisco Connection Online (CCO). These electronic documents may contain updates and modifications made after the hardcopy documents were printed.

These release notes for the Cisco 3600 series describe the enhancements provided in Cisco IOS Release 12.1(2)XH. These release notes are updated as needed.

For a list of the software caveats that apply to Cisco IOS Release 12.1(2)XH, see the "Caveats" section and Caveats for Cisco  IOS Release 12.1. The caveats document is updated for every maintenance release and is located on Cisco Connection Online (CCO)  and the Documentation CD-ROM.

Use these release notes with Cross-Platform Release Notes for Cisco  IOS Release 12.1 located on CCO  and the Documentation CD-ROM.

Contents

These release notes describe the following topics:

• Introduction

• System Requirements

• New and Changed Information

• Important Notes

• Caveats

• Related Documentation

• Obtaining Documentation

• Obtaining Technical Assistance

Introduction

The Cisco 3600 series includes the Cisco 3620, Cisco 3640, and Cisco 3660 routers. As modular solutions, the Cisco 3600 series routers enable corporations to increase dial-up density and take advantage of current and emerging WAN technologies and networking capabilities. The Cisco 3600 series routers are fully supported by Cisco IOS software, which includes dial-up connectivity, LAN-to-LAN routing, data and access security, WAN optimization, and multimedia features.

For information on new features and Cisco IOS commands supported by Cisco IOS Release 12.1(2)XH, see the "New and Changed Information" section and the "Related Documentation" section.

System Requirements

This section describes the system requirements for Cisco IOS Release 12.1(2)XH:

• Minimum Memory Recommendations

• Hardware Supported

• Determining the Software Version

• Upgrading to a New Software Release

• Other Firmware Code

• Feature Set Tables

Minimum Memory Recommendations

Table 1: Minimum Memory Recommendations for the Cisco 3600 Series

Platform	Feature Sets	Image Name	Flash Memory Recommended	DRAM Memory Recommended	Runs From
Cisco 3620	IP Plus	c3620-is-mz	16 MB	48 MB	RAM
	IP/IPX/AT/DEC Plus	c3620-ds-mz	16 MB	48 MB	RAM
	Enterprise Plus	c3620-js-mz	16 MB	64 MB	RAM
Cisco 3640	IP Plus	c3640-is-mz	16 MB	48 MB	RAM
	IP/IPX/AT/DEC Plus	c3640-ds-mz	16 MB	48 MB	RAM
	Enterprise Plus	c3640-js-mz	16 MB	64 MB	RAM
Cisco 36601	IP Plus	c3660-is-mz	16 MB	64 MB	RAM
	IP Plus/IPSec 56	c3660-is56i-mz	16 MB	64 MB	RAM
	IP/H.323 Gtkpr Prxy	c3660-ix-mz	8 MB	64 MB	RAM
	IP/IPX/AT/DEC Plus	c3660-ds-mz	16 MB	64 MB	RAM
	IP/IPX/AT/DEC FW IDS Plus	c3660-do3s-mz	16 MB	64 MB	RAM
	Enterprise/SNASw Plus	c3660-a3js-mz	16 MB	64 MB	RAM
	Enterprise/SNASw Plus IPSec 3DES	c3660-a3jk2s-mz	16 MB	64 MB	RAM
	Enterprise Plus	c3660-js-mz	16 MB	64 MB	RAM
	Enterprise Plus IPSec 56	c3660-js56i-mz	16 MB	64 MB	RAM
	Enterprise Plus/IPSec 3DES	c3660-jk2s-mz	16 MB	64 MB	RAM
	Enterprise/FW/IDS Plus IPSec 56	c3660-jo3s56i-mz	16 MB	64 MB	RAM
	Enterprise/FW/IDS Plus IPSec 3DES	c3660-jk2o3s-mz	16 MB	64 MB	RAM
	Telco2	c3660-telco-mz	16 MB	64 MB	RAM
	Telco Plus2	c3660-telcoent-mz	16 MB	64 MB	RAM

1The Cisco 3660 uses SDRAM. 2The Telco images only run on the 3660-AC-CO and 3660-DC-CO.

Hardware Supported

Cisco IOS Release 12.1(2)XH supports the following Cisco 3600 series routers:

• Cisco 3620

• Cisco 3640

• Cisco 3660 (3661 and 3662)

For detailed descriptions of the new hardware features, see the "New and Changed Information" section.

Table 2: Supported Interfaces for the Cisco 3600 Series

Interface, Network Module, or Data Rate	Product Description	Platforms Supported
Dial Access Network Modules	16- and 32-port asynchronous (NM-16A and NM-32A)	All Cisco 3600 series platforms
	6- to 30-port integrated digital modems network modules (NM-6DM, NM-12-DM, NM-18DM, NM-24DM, NM-30DM)	All Cisco 3600 series platforms
	6 digital modem upgrade (MICA-6MOD)	All Cisco 3600 series platforms
	8- or 16-port integrated analog network modules (NM-8AM and NM16AM)	All Cisco 3600 series platforms
LAN Interfaces	1- and 4-port Ethernet (AUI and 10BaseT, NM-4E and NM-8E)	All Cisco 3600 series platforms
	1-port Fast Ethernet (100BaseTX and 100BaseFX, NM-1FE-TX and NM-1FE-FX)	All Cisco 3600 series platforms
Mixed Media Network Modules	1-port 10/100BaseTX with 1-port channelized/PRI /E1 balanced mode (NM-1FE1CE1B)	All Cisco 3600 series platforms
	1-port 10/100BaseTX with 1-port channelized/PRI/E1 unbalanced mode (NM-1FE1CE1U)	All Cisco 3600 series platforms
	1-port 10/100BaseTX with 1-port channelized/PRI/T1 (NM-1FE1CT1)	All Cisco 3600 series platforms
	1-port 10/100BaseTX with 1-port channelized/PRI /T1 with CSU (NM-1FE1CT1-CSU)	All Cisco 3600 series platforms
	1-port 10/100BaseTX with 2-port channelized/PRI/ E1 balanced mode (NM-1FE2CE1B)	All Cisco 3600 series platforms
	1-port 10/100BaseTX with 2-port Channelized/PRI /E1 unbalanced mode (NM-1FE2CE1U)	All Cisco 3600 series platforms
	1-port 10/100BaseTX with 2-port channelized/PRI /T1 (NM-1FE2CT1)	All Cisco 3600 series platforms
	1-port 10/100BaseTX with 2-port channelized/PRI/ T1 with CSU (NM-1FE2CT1-CSU)	All Cisco 3600 series platforms
	1 Ethernet and 2 WAN card slots (NM-1E2W)	All Cisco 3600 series platforms
	1 Ethernet, 1 Token Ring, and 2 WAN card slots (NM-1E1R2W)	All Cisco 3600 series platforms
	2 Ethernet and 2 WAN card slots (NM-2E2W)	All Cisco 3600 series platforms
	1-port fast Ethernet, 1-port Token Ring with 2 WAN card slots (NM-1FE1R2W)	All Cisco 3600 series platforms
	1-port fast Ethernet with 2 WAN card slots (NM-1FE2W)	All Cisco 3600 series platforms
	2-port fast Ethernet with 2 WAN card slots (NM-2FE2W)	All Cisco 3600 series platforms
	2 WAN card slots (NM-2W)	All Cisco 3600 series platforms
Multiport T1/E1 ATM Network Modules with Inverse Multiplexing over ATM (IMA)1	4-port T1 ATM network module with IMA (NM-4T1-IMA)	All Cisco 3600 series platforms
	4-port E1 ATM network module with IMA (NM-4E1-IMA)	All Cisco 3600 series platforms
	8-port T1 ATM network module with IMA (NM-8T1-IMA)	All Cisco 3600 series platforms
	8-port E1 ATM network module with IMA (NM-8E1-IMA)	All Cisco 3600 series platforms
Digital T1/E1 Packet Voice Trunk Network Modules and Spare Components	1-port, 24-channel T1 voice/fax module, supports 24 channels of medium-complexity codecs: G.729a/b, G.726, G.711 and fax or 12 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, two PVDM-12s, and one VWIC-1MFT-T12. (NM-HDV-1T1-24)	All Cisco 3600 series platforms
	1-port, enhanced 24-channel T1 voice/fax module, supports 24 channels of high- and medium-complexity codecs: G.729a/b, G.726, G.729, G.728, G.723.1, G.711, and fax. Consists of one NM-HDV, four PVDM-12s, and one VWIC-1MFT-T12. (NM-HDV-1T1-24E)	All Cisco 3600 series platforms
	2-port, 48-channel T1 voice/fax module, supports add/drop multiplexing (drop and insert); 48 channels of medium-complexity codecs: G.729a/b, G.726,G.711, and fax; or 24 channels of G726, G729, G723.1, G.728, G729a/b, G711, and fax. Consists of one NM-HDV, four PVDM-12, and one VWIC-2MFT-T1-DI2. (NM-HDV-2T1-48)	All Cisco 3600 series platforms
	1-port, 30-channel E1 voice/fax module, supports 30 channels of G.729a/b, G.726, G.711 and fax or 18 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, three PVDM-12s, and one VWIC-1MFT-E12. (NM-HDV-1E1-30)	All Cisco 3600 series platforms
	1-port, enhanced 30-channel E1 voice/fax module, supports 30 channels of G.729a/b, G.726, G.729, G.728, G.723.1, G.711, and fax. Consists of one NM-HDV, five PVDM-12s, and one VWIC-1MFT-E12. (NM-HDV-1E1-30E)	All Cisco 3600 series platforms
	2-port, 60-channel E1 voice/fax module, supports add/drop multiplexing (drop and insert); 60 channels of G.729a/b, G.726, G.711, and fax or 30 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, five PVDM-12s, and one VWIC-2MFT-E1-D12. (NM-HDV-2E1-60)	All Cisco 3600 series platforms
	High-density voice/fax network module spare (NM-HDV=)	Digital T1 Packet Voice Trunk Network Modules spare component
	12-channel packet voice DSP module upgrade spare (PVDM-12=)	Digital T1 Packet Voice Trunk Network Modules spare component
	1-port RJ-48 multiflex trunk - T1 (VWIC-1MFT-T1=)2	Digital T1 Packet Voice Trunk Network Modules spare component
	2-port RJ-48 multiflex trunk - T1 (VWIC-2MFT-T1=)2	Digital T1 Packet Voice Trunk Network Modules spare component
	2-port RJ-48 multiflex trunk with drop and insert - T1 (VWIC-2MFT-T1-DI=)2	Digital T1 Packet Voice Trunk Network Modules spare component
T1/E1 Multiflex Voice/WAN Interface Cards	1-port T1 multiflex trunk interface (VWIC-1MFT-T1)	All Cisco 3600 series platforms
	1-port E1 multiflex trunk interface (VWIC-1MFT-E1)	All Cisco 3600 series platforms
	2-port T1 multiflex trunk interface (VWIC-2MFT-T1)	All Cisco 3600 series platforms
	2-port T1 multiflex trunk interface with drop and insert (VWIC-2MFT-T1-DI)3	All Cisco 3600 series platforms
	2-port E1 multiflex trunk interface with drop and insert (VWIC-2MFT-E1-DI)	All Cisco 3600 series platforms
Voice/Fax Interfaces and Network Modules1	1- and 2-port voice/fax network module (NM-1V and NM-2V)	All Cisco 3600 series platforms
	2-port E&M voice interface card (VIC-2E/M)	All Cisco 3600 series platforms
	2-port FXO voice interface card (VIC-2FXO, VIC-2FXO-M3, and VIC-2FXO-EU)	All Cisco 3600 series platforms
	2-port FXS voice interface card (VIC-2FXS)	All Cisco 3600 series platforms
	2-port BRI voice interface card (VIC-2BRI-S/T-TE)	Cisco 3620 and 3640 platforms
WAN Data Rates	48/56/64 kbps	All Cisco 3600 series platforms
	1.544/2.048 Mbps	All Cisco 3600 series platforms
	Up to 8 Mbps on 4-port serial network module	All Cisco 3600 series platforms
	52 Mbps max using HSSI network module	All Cisco 3600 series platforms
	Up to 100 Mbps on ATM OC3 network modules	All Cisco 3600 series platforms
Network Modules	1- and 2-port channelized T1 modules without CSUs (NM-1CT1 and NM-1CT1)	All Cisco 3600 series platforms
	1- and 2-port channelized T1 network modules with CSUs (NM-1CT1-CSU and NM-2CT1-CSU)	All Cisco 3600 series platforms
	1- and 2-port E1 network modules unbalanced mode (NM-1CE1U and NM-2CE1U)	All Cisco 3600 series platforms
	1- and 2-port E1 network modules balanced mode (NM-1CE1B and NM-2CE1B)	All Cisco 3600 series platforms
	1-port ATM-25 network modules (NM-1ATM-25)1	All Cisco 3600 series platforms
	1-port ATM T3 network module (NM-1A-T3)	All Cisco 3600 series platforms
	1-port ATM E3 network module (NM-1A-E3)	All Cisco 3600 series platforms
	1-port high-speed serial Interface (HSSI) network module	All Cisco 3600 series platforms
	4- and 8-port BRI network module with NT1 (NM-4B-U and NM-8B-U)	All Cisco 3600 series platforms
	4- and 8-port BRI network module with S/T interface (NM-4B-S/T and NM-8B-S/T	All Cisco 3600 series platforms
	4- and 8-port synchronous/asynchronous (NM-4A/S and NM-8A/S)	All Cisco 3600 series platforms
	16- and 32-port asynchronous (NM-16A and NM-32A)	All Cisco 3600 series platforms
	4-port serial (NM-4T)	All Cisco 3600 series platforms
	1-port ATM OC-3 network module with multimode fiber (NM-1A-OC3MM)	All Cisco 3600 series platforms
	1-port ATM OC-3 network module with single-mode intermediate reach fiber (NM-1A-OC3SMI)	All Cisco 3600 series platforms
	1-port ATM OC-3 network module with single-mode long reach fiber (NM-1A-OC3SML)	All Cisco 3600 series platforms
	1-port ATM OC-3 multimode network module and circuit emulation service (NM-1A-OC3MM-1V)	All Cisco 3600 series platforms
	1-port ATM OC-3 single-mode, intermediate reach network module and circuit emulation service (NM-1A-OC3SMI-1V)	All Cisco 3600 series platforms
	1-port ATM OC-3 single-mode, long reach network module and circuit emulation service (NM-1A-OC3SML-1V)	All Cisco 3600 series platforms
Other Network Modules	Compression network module (NM-COMPR)	All Cisco 3600 series platforms
	4 E1 data compression Advanced Integration Module (AIM-COMPR4)	All Cisco 3600 series platforms
WAN Interface Cards	1-port T1/Fractional T1/DSU/CSU WAN interface card (WIC-1DSU-T1)	All Cisco 3600 series platforms
	1-port T1/Fractional T1 56/64 kbps DSU/CSU WAN interface card (WIC-1DSU-56K4)	All Cisco 3600 series platforms
	1-port ISDN with NT1 WAN interface card (WIC-1B-U)	All Cisco 3600 series platforms
	1-port ISDN WAN interface card (WIC-1B-S/T)	All Cisco 3600 series platforms
	1-port serial WAN interface card (WIC-1T)	All Cisco 3600 series platforms
	2-port serial (WIC-2T)4	All Cisco 3600 series platforms
	2-port asynchronous/synchronous (WIC-2A/S)4	All Cisco 3600 series platforms

1Requires the Cisco IOS Plus feature sets. 2See T1/E1 Multiflex Voice/WAN Interface Cards in this table. 3For Cisco 3660 series, only supported in T1/E1 digital packet voice trunk network modules and new Fast Ethernet mixed media network modules: NM-1FE2W, NM-2FE2W, NM-1FE1R2W, NM-2W. For Cisco 3620 and 3640, supported in T1/E1 digital packet voice trunk network modules or in 1- or 2-port Ethernet and Fast Ethernet network module (NM-1E2W, NM-2E2W, NM-1E1R2W, NM-1FE2W, NM-2FE2W, NM-1FE1R2W, NM-2W) 4Supported in Fast Ethernet mixed media network modules: NM-1FE2W, NM-2FE2W, NM-1FE1R2W, NM-2W.

Determining the Software Version

To determine the version of Cisco IOS software running on your Cisco 3600 series, log in to the Cisco 3600 series and enter the show version EXEC command:

router> show version
Cisco Internetwork Operating System Software 
IOS (tm) 12.1 Software (c3600-i-mz), Version 12.1(2)XH, RELEASE SOFTWARE

Upgrading to a New Software Release

For general information about upgrading to a new software release, see Upgrading the Cisco   IOS Software Release in Cisco Routers and Modems  located at:

http://www.cisco.com/warp/public/620/6.html

Other Firmware Code

The latest version of analog modem firmware for the Cisco 3600 series supports the internal analog modems (both NM-16AM and NM-8AM) in a wide range of countries, starting with Cisco IOS Release 11.3(5)T and later releases. The latest firmware (Version 1.2.0) also supports dial-out and fax-out.

On CCO, beginning under the Service & Support heading:

Technical Documents: Documentation Home Page: Access Servers and Access Routers: Modular Access Routers: Cisco 3600 Series Routers: Analog Modem Firmware

On the Documentation CD-ROM at:

Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 3600 Series Routers: Analog Modem Firmware

Feature Set Tables

The Cisco IOS software is packaged in feature sets consisting of software images---depending on the platform. Each feature set contains a specific set of Cisco IOS features.

Cisco IOS Release 12.1(2)XH supports the same feature sets as Cisco IOS Release 12.1, but Cisco IOS Release 12.1(2)XH can include new features supported by the Cisco 3600 series.

Table 3: Feature Sets Supported by the Cisco 3600 Series

Feature Set		Feature Set Matrix Term	Software Image	Platforms
IP Standard Feature Sets	IP Plus	Plus1	c3620-is-mz, c3640-is-mz, c3660-is-mz	All Cisco 3600 platforms
	IP Plus IPSec 56	Plus IPSec 562	c3660-is56i-mz	Cisco 3660 platform
	IP/H.323 Gtkpr Prxy	Basic H.323	c3660-ix-mz	Cisco 3660 platform
IBM Sandard Feature Sets	IP/IPX/AppleTalk/DEC Plus	Plus	c3620-ds-mz, c3640-ds-mz, c3660-ds-mz	All Cisco 3600 platforms
	IP/IPX/AppleTalk/DEC/FW/IDS Plus	Plus	c3660-do3s-mz	Cisco 3660 platform
Enterprise Standard Feature Sets	Enterprise Plus	Plus	c3620-js-mz, c3640-js-mz, c3660-js-mz	All Cisco 3600 platforms
	Enterprise Plus IPSec 56	Plus IPSec 56	c3660-js56i-mz	Cisco 3660 platform
	Enterprise/FW/IDS Plus IPSec 56	IPSec 56	c3660-jo3s56i-mz	Cisco 3660 platform
	Enterprise Plus IPSec 3DES	Plus IPSec 3DES	c3660-jk2s-mz	Cisco 3660 platform
	Enterprise/FW/IDS Plus IPSec 3DES	Plus IPSec 3DES	c3660-jk2o3s-mz	Cisco 3660 platform
Enterprise/SNASw Standard Feature Sets	Enterprise/SNASw Plus	Plus	c3660-a3js-mz	Cisco 3660 platform
	Enterprise/SNASw Plus IPSec 3DES	Plus IPSec 3DES	c3660-a3jk2s-mz	Cisco 3660 platform
Telco Feature Sets3	IOS Telco Feature Set	Telco	c3660-telco-mz	Cisco 3660 platform
	IOS Telco Plus Feature Set	Telco Plus	c3660-telcoent-mz	Cisco 3660 platform

1This feature set is offered in the Plus feature set. 2This feature set is offered in the encryption feature sets which consist of IPSec 56-bit (Plus IPSec 56) data encryption feature sets. 3For 3662-xC-CO chassis only.

---

Note Cisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to United States government export controls and have limited distribution. Strong encryption images to be installed outside the United States are likely to require an export license. Customer orders may be denied or subject to delay due to United States government regulations. When applicable, purchaser/user must obtain local import and use authorizations for all encryption strengths. Please contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com.

---

Table 4, Table 5, and Table 6 list the features and feature sets supported by the Cisco 3600 series in Cisco IOS Release 12.1(2)XH and uses the following conventions:

• Yes---The feature is supported in the software image.

• No---The feature is not supported in the software image.

Note These feature set tables only contain a selected list of features. The tables are not cumulative---nor do they list all the features in each image.

Table 4: Feature Lists by Feature Sets for the Cisco 3620 and 3640 Routers, Part 1 of 2

Features	Feature Sets
	IP Plus	IP/ IPX/ AT/DEC Plus	Enter- prise Plus
New Features In 12.1(2)XH
Transparent Common Channel Signaling (T-CCS)	Yes	Yes	Yes
Feature Group D Support	Yes	Yes	Yes
ISDN Enhancements for Digital T1/E1 NMs	Yes	Yes	Yes
E1 and R2 Signaling	Yes	Yes	Yes
Network Side PRI Signaling	Yes	Yes	Yes
Caller ID Support (CLID)	Yes	Yes	Yes
Multicast Hoot and Holler Conferencing over IP	Yes	Yes	Yes
T1/E1 Multiflex VWIC Enhancements	Yes	Yes	Yes
Connectivity
Bidirectional PIM	Yes	Yes	Yes
Common Open Service (COPS) for RSVP	Yes	Yes	Yes
Layer 2 Tunnel Protocol (L2TP)	Yes	Yes	Yes
L2TP Dial Out	Yes	Yes	Yes
RIP Enhancements	Yes	Yes	Yes
SNMP version 3	Yes	Yes	Yes
IBM Support
DLSw+ Enhanced Load Balancing	Yes	Yes	Yes
DLSw+ Ethernet Redundancy	Yes	Yes	Yes
DLSw+ Peer Clusters	Yes	Yes	Yes
DLSw+ RSVP Bandwidth Reservation	Yes	Yes
SNA Switching Services	No	No	No
Token Ring Interswitch Link	Yes	Yes	Yes
IP/IPX Routing
OSPF Flooding Reduction	Yes	Yes	Yes
PGM Host	No	No	Yes
Service Assurance Agent Enhancements	Yes	Yes	Yes
Airline Product Set Enhancements	Yes	Yes	Yes
Asynchronous Serial Traffic over UDP	Yes	Yes	Yes
Easy IP Phase 2- DHCP Server	Yes	Yes	Yes
Flow-based WRED	Yes	Yes	Yes
IP RTP Priority	Yes	Yes	Yes
IS-IS Multiarea Support	No	No	Yes
Multilayer Switching for IP Multicast	Yes	Yes	Yes
Multilayer Switching for IPX	Yes	Yes	Yes
OSPF Packet Pacing	Yes	Yes	Yes
PGM Router Assist	Yes	Yes	Yes
Service Assurance Agent (formerly Response Time Reporter)	Yes	Yes	Yes
Web Cache Communications Protocol V2 (WCCPv2)	Yes	Yes	Yes
Management
CNS Client for Cisco IOS (IPSec Policy Agent II)	No	No	Yes
ISDN MIB RFC 2127	Yes	Yes	Yes
Multicast Routing Monitor	Yes	Yes	Yes
Network Director Forwarding Agent	Yes	Yes	Yes
Process MIB	Yes	Yes	Yes
Subnetwork Bandwidth Manager	Yes	Yes	Yes
Quality of Service
Class-Based Weighted Fair Queuing	Yes	Yes	Yes
CLI String Search	Yes	Yes	Yes
Express RTP and TCP Header Compression	Yes	Yes	Yes
IP to ATM Class of Service	Yes	Yes	Yes
Security
Wildcard Pre-Shared Key Enhancement	No	No	No
IKE Shared Secret Using AAA Server	No	No	No
IKE Extended Authentication	No	No	No
Secure Shell (SSH) Version 1	Yes	Yes	Yes
AAA Server Group Deadtimer	Yes	Yes	Yes
AAA Broadcast Accounting	Yes	Yes	Yes
Cisco Secure Integrated Software	No	No	No
Cisco IOS Firewall Feature Set	No	No
Cisco IOS Firewall Feature Set Enhancements	No	No	No
Cisco IOS STP Enhancements	Yes	Yes	Yes
Voice and Multimedia
Gateway-to- Gatekeeper Billing Redundancy	Yes	Yes	Yes
Ecosystem Gatekeeper Interoperability Enhancements	Yes	Yes	Yes
Gatekeeper-to- Gatekeeper Redundancy and Load Sharing	No	No	Yes
H.323 Version 2, Phase 2	Yes	Yes	Yes
H.323 Support for Virtual Interfaces	Yes	Yes	Yes
Session Initiation Protocol (SIP)	Yes	Yes	Yes
Dial Peer Enhancements	Yes	Yes	Yes
Asynchronous Rotary Line Queuing	Yes	Yes	Yes
Answer Supervision Reporting	Yes	Yes	Yes
Configurable Timers in H.225	Yes	Yes	Yes
Voice Busyout Enhancements	Yes	Yes	Yes
Voice over Frame Relay Configuration Updates (FRF.11 and FRF.12)	Yes	Yes	Yes
QSIG Protocol Support	Yes	Yes	Yes
Voice over ATM	Yes	Yes	Yes
Simple Gateway Control Protocol (SGCP)1	Yes	Yes	Yes
1- and 2-Port T1/E1 Multiflex VWICs	Yes	Yes	Yes
BRI Voice over IP:VIC-2BRI- S/T-TE	Yes	Yes	Yes
Busyout Monitor	Yes	Yes	Yes
Digital T1 Packet Voice Trunk Network Modules	Yes	Yes	Yes
Gateway Support for Alternate Gatekeeper	No	No	Yes
H.235 Accounting and Security Enhancements for Cisco Gateways	No	No	Yes
H.323 Version 2	No	No	Yes
H.323 Multizone Enhancements	No	No	Yes
Interactive Voice Response for Cisco Access	Yes	Yes	Yes
Voice over Frame Relay Enhancements (FRF.11 and FRF.12)	Yes	Yes	Yes
WAN Services
Frame Relay Switching Enhancements: Shaping and Policing	Yes	Yes	Yes
Frame Relay PVC Interface Priority Queuing	Yes	Yes	Yes
Low Latency Queuing for Frame Relay	Yes	Yes	Yes
Settlement for Packet Telephony	No	No	Yes
ISDN Network Side for ETSI Net5 PRI	Yes	Yes	Yes
PPP over Ethernet	Yes	Yes	Yes
ATM T3/E3 NM	Yes	Yes	Yes
Annex-G (X.25 over Frame Relay)	Yes	Yes	Yes
ATM OC-3 NM	Yes	Yes	Yes
ATM LANE FSSR Protocol	Yes	Yes	Yes
Debit Card for Packet Telephony	Yes	Yes	Yes
DNS-Based X.25 Routing	Yes	Yes	Yes
Frame Relay End-to-End Keepalive	Yes	Yes	Yes
Interface MIB for ATM Subinterfaces	Yes	Yes	Yes
IEEE 802.1Q Support	Yes	Yes	Yes
Dynamic Multiple Encaps for Dial-in over ISDN	Yes	Yes	Yes
ISDN Dynamic Multiple Encaps for Dial-in with Frame Relay Support	Yes	Yes	Yes
ISDN LAPB-TA	Yes	Yes	Yes
Mobile IP	Yes	Yes	Yes
Modem over ISDN BRI1	Yes	Yes	Yes
MPLS Traffic Engineering	No	No	Yes
Multicast Source Discovery Protocol (MSDP)	Yes	Yes	Yes
Multiport T1/E1 ATM Network Module with Inverse Multiplexing over ATM	Yes	Yes	Yes
Packet Telephony Settlement	No	No	Yes
PPP Over Frame Relay	Yes	Yes	Yes
Time-based Access Lists	Yes	Yes	Yes
X.25 Closed User Groups	Yes	Yes	Yes
X.25 Load Balancing	Yes	Yes	Yes
X.25 Switch Local Acknowledgment	Yes	Yes	Yes

1Cisco 3640 routers only.

New and Changed Information

The following sections list the new hardware and software features supported by the Cisco 3600 series for Cisco IOS Release 12.1(2)XH.

New Software Features in Cisco IOS Release 12.1(2)XH

Transparent Common Channel Signaling (T-CCS) on Cisco 2600, 3600, 7200 and 7500 Series Routers

Transparent CCS allows the connection of two PBXs with PRI or BRI interfaces that use one CCS protocol without the need for interpretation of CCS signaling for call processing. A PBX PRI group is transported transparently through the data network and the feature preserves proprietary signaling. From the PBX standpoint, this is accomplished through a point-to-point connection. Calls from the PINXs are not routed, but follow a preconfigured route to the destination.

The following hardware provides support for the Transparent CCS (T-CCS) feature, which provides a way to interconnect private branch exchanges (PBXs), key systems (KTs), and central office switches (COs) when the Private Integrated Services Network Exchange (PINX) does not support QSIG, or when the PINX uses a proprietary solution:

• Digital T1/E1 Packet Voice Trunk Network Modules on Cisco 2600 series and 3600 series routers

• Two-Port T1/E1 Digital Voice Port Adapters for Cisco 7200 series and 7500 series routers

If you are configuring your Digital T1/E1 Packet Voice Trunk Network Module or T1/E1 Digital Voice Port Adapter to route signaling traffic for Voice over Frame Relay (VoFR) or Voice over ATM (VoATM), you can configure transparent CCS using CCS frame-forwarding.

If you are configuring your Digital T1/E1 Packet Voice Trunk Network Module or T1/E1 Digital Voice Port Adapter to route signaling traffic for Voice over Internet Protocol (VoIP), transparent CCS is configured by routing traffic over a clear channel codec.

Restrictions

This feature has the following restrictions:

• The Digital T1/E1 Packet Voice Trunk Network Module can have one or two slots for voice/WAN interface cards (VWICs); VWICs supply one or two ports. Only the dual-mode (voice/WAN) multiflex trunk cards are supported in the digital E1 packet voice trunk network module, not older VICs.

• Drop-and-Insert capability is supported only between two ports on the same multiflex card.

• Digital E1 voice is not manageable through Simple Network Management Protocol (SNMP) using existing versions of Cisco Voice Manager. Release 2.0 of Cisco Voice Manager is planned to support the feature.

Feature Group D Support on Digital T1/E1 Packet Voice Trunk Network Modules

This feature extends support for Feature Group D signaling on the Digital T1/E1 packet voice trunk network modules on Cisco 2600 and 3600 series routers.

Cisco 2600 and 3600 series routers must use Feature Group D to provide Voice over IP (VoIP) functionality in the carrier environment.

Feature Group D is a trunk-side local-access transport area (LATA) access that supplies the following features:

• Call supervision to an interexchange carrier (IEC)

• Provides trunk-side access with an associated 10XXX access code for end-user use in originating and terminating communications

• Optional calling-party identification

• Recording of access-charge billing details

• Presubscription to a customer-specified IEC

• Provides the automatic number identification (ANI) for billing purposes

ISDN Enhancements for Digital T1/E1 Packet Voice Trunk Network Modules on Cisco  2600 and 3600 Series Routers

The digital T1/E1 packet voice trunk network modules on Cisco 2600 series and 3600 series routers now support the following enhancements for ISDN call processing:

• Q.931 user-side switch types

• ISDN PRI network-side support

• Clear-channel codec support for ISDN data calls and T-CCS signaling over IP. Clear-channel codecs support a constant bit stream at 64 kbps

E1 R2 and Channel-Associated Signaling on the Digital T1/E1 Packet Voice Trunk Network Module

The Cisco Digital T1/E1 Packet Voice Trunk Network Modules now support:

• E1 Channel-Associated Signaling

The Cisco Digital T1/E1 Packet Voice Trunk Network Module supports channel-associated signaling for channelized E1 lines, which are commonly deployed in networks in Latin America, Asia, and Europe. Channel-associated signaling is configured to support channel banks in the network that convert various battery and ground operations on analog lines into signaling bits, which are forwarded over digital lines.

Channel-associated signaling is call signaling that is configured on an E1 controller and enables the router to send or receive analog calls. The signaling uses the 16th channel (timeslot); thus, channel-associated signaling fits in the out-of-band signaling category.

• R2 Signaling

R2 signaling is an international signaling standard that is common to channelized E1 networks. However, there is no single signaling standard for R2. The ITU-T Q.400-Q.490 recommendation defines R2, but a number of countries and geographic regions implement R2 in entirely different ways. Cisco Systems addresses this challenge by supporting many localized implementations of R2 signaling in its Cisco IOS software.

The Cisco Systems E1 R2 signaling default is ITU, which supports the following countries: Denmark, Finland, Germany, Russia (ITU variant), Hong Kong (ITU variant), and South Africa (ITU variant). The expression "ITU variant" means there are multiple R2 signaling types in the specified country, but Cisco supports the ITU variant.

Cisco Systems also supports specific local variants of E1 R2 signaling in the following regions, countries, and corporations:

• Argentina

• Australia

• Brazil

• China

• Columbia

• Costa Rica

• East Europe (includes Croatia, Russia, and Slovak Republic)

• Ecuador ITU

• Ecuador LME

• Greece

• Guatemala

• Hong Kong (uses the China variant)

• Indonesia

• Israel

• Korea

• Malaysia

• New Zealand

• Paraguay

• Peru

• Philippines

• Saudi Arabia

• Singapore

• South Africa (Panaftel variant)

• Telmex corporation (Mexico)

• Telnor corporation (Mexico)

• Thailand

• Uruguay

• Venezuela

• Vietnam

Configuring Digital T1/E1 Packet Voice Trunk Network Modules for WAN Data Traffic

Cisco digital T1/E1 packet voice trunk network modules support voice and data applications on Cisco 2600 and 3600 series routers. With Cisco IOS Release 12.1(2)XH, the digital T1/E1 packet voice trunk network modules provide WAN data connections in addition to voice connections and digital cross-connect.

The digital T1/E1 packet voice trunk network modules support T1/E1 applications, including fractional use. The T1 version integrates a fully managed data service unit/channel service unit (DSU/CSU), and the E1 version includes a fully managed DSU.The digital T1/E1 packet voice trunk network modules provide per-channel T1/E1 data rates of 64 or 56 kbps for WAN services (Frame Relay or leased line).

Restrictions

The following restrictions apply to digital T1/E1 packet voice trunk network module configurations:

• On all Cisco 2600 and 3600 platforms, digital T1/E1 packet voice trunk network modules only support T1/E1 Multiflex voice/WAN interface cards (VWICs).

• Drop-and-Insert capability is supported only between two ports on the same digital T1/E1 packet voice trunk network module.

Network Side PRI Signaling, Trunking, and Switching

The Network Side PRI Signaling, Trunking, and Switching feature enables Cisco IOS software to replicate the public switched network interface to a PBX that is compatible with the National ISDN (NI) and ETSI Net5 switch types.

Routers and PBXs are both traditionally CPE with respect to the public switched network interfaces. For Voice over IP (VoIP) applications, it is desirable to interface access servers to PBXs with the access server representing the public switched network.

Enterprise organizations use the current Voice over IP (VoIP) features with Cisco products as a method to reduce long distance costs for phone calls within and outside their organizations. However, there are times that a call cannot go over VoIP and the call needs to be placed using the Public Switched Telephone Network (PSTN). The customer then must have two devices connected to a PBX to allow some calls to be placed using VoIP and some calls to be placed over the PSTN. In contrast, this feature allows Cisco access servers to connect directly to user-side CPE such as PBXs and allows voice calls and data calls to be placed without requiring two different devices to be connected to the PBXs.

The ISDN Network Side PRI Signaling, Trunking, and Switching feature allows Cisco ISDN-enabled access servers to switch calls across interfaces as legacy phone switches do today and to mimic the behavior of the legacy phone switches.

Caller ID on Cisco 2600, 3600, and MC3810 Series

Caller ID (sometimes called CLID or ICLID for incoming call line identification) is an analog service offered by a Central Office (CO), which supplies calling party information to subscribers. Typically, the calling party number, and sometimes the name, appears on a station (also called extension) device such as a PC telephony software application screen or the display on a telephone. Type 1 Caller ID provides the calling party information while the call is ringing, and Type 2 Caller ID provides the additional convenience of calling number display while the recipient is on another call. In this release, Cisco provides only Type 1 Caller ID support.

The Caller ID feature supports the sending of calling party information from Foreign Exchange Station (FXS) loop-start and ground-start ports into a Caller-ID equipped telephone device. The FXS port emulates the extension interface of a private-branch exchange (PBX) or the subscriber interface for a CO switch.

The Caller ID feature supports receiving calling-party information at Foreign Exchange Office (FXO) loop-start and ground-start ports. The FXO port emulates a connection to a telephone and allows connection to a PBX extension interface or (where regulations permit) a CO subscriber line.

Multicast Hoot and Holler Conferencing over IP

The voice multicasting feature uses Cisco Voice over IP technology to create a permanently connected point-to-multipoint hoot-and-holler network over an IP connection. Hoot and holler is a broadcast audio network used extensively by the brokerage industry for market updates and trading. These applications can reap significant advantages by running over an IP network because any idle bandwidth can be reclaimed by data applications. Similar networks are also used in publishing, transportation, power plants, and manufacturing.

You can connect voice multicasting telephones to network routers in any of the following ways:

• Connect a four-wire E&M telephone, which has no dial and is always off-hook, directly to an E&M voice interface card installed in a voice network module. Configure the E&M interface for four-wire trunk operation.

• Connect a conventional telephone to a PBX that is connected to an E&M voice interface card.

Note Voice multicasting over FXS and FXO voice interface cards is not supported at this time.

• Connect a conventional telephone to a PBX that is connected through a T1 line to a multiflex trunk interface card installed in a high-density voice network module.

Note The voice multicasting feature supports only one T1 line per high-density voice network module.

T1/E1 Multiflex VWIC Enhancements

CLI Reset, Microcode Reload Functionality

You can reload the firmware and FPGA on the VWIC from the CLI without reloading the Cisco IOS image by using the new microcode reload controller command.

BERT, T1 Line and Payload Loopback Initiation

Bit-error-rate testing (BERT) and loopbacks are used by carriers and ISPs to help resolve problems as well as test the quality of T1/E1 links. By early detection of poor quality links and quick problem isolation, network operators can improve their network's quality of service and increase their revenues:

• You can run BERT without having to initiate a remote loopback first.

• You can stop BERT tests prematurely.

• You can view the real-time BERT result for up to a 1-second delay.

• You can now initiate a T1 line or payload loopback to a remote T1 interface

Time-division multiplexing (TDM)

Time-division multiplexing (TDM) allows switching of channels between ports 1 and 2. The card accomodates TDM groups, which are groups of timeslots that may be sent from one E1/T1 trunk to another without being terminated. This allows you to allocate some timeslots (TDM groups) for pass-through while other timeslots (channel groups) are terminated as a serial link. By using these two abilities, you can connect traffic from any TDM-based device to any other TDM-based device in the system, as long as there is a path and enough bandwidth between the devices.

Important Notes

Product Number Change

Beginning with Cisco IOS Release 12.0(7)XK, Cisco changed the product numbers used to order a specific Cisco IOS software image. In short, Cisco will remove the periods separating the release train, maintenance release, and build number. The following table provides some examples.

Old Product Number	New Product Number	Release	Image Description
S364AR1K2-12.1.2=	S364AR1K2-1212=	Cisco IOS Release 12.1(2)	Cisco 3640 Series IOS Enterprise/SNA SW PLUS IPSEC 3DES
S26CP-12.1.2=	S26CP-1212=	Cisco IOS Release 12.1(2)	Cisco 2600 Series IOS IP Plus

MIBs

Old Cisco Management Information Bases (MIBs) will be replaced in a future release. Currently, OLD-CISCO-* MIBs are being converted into more scalable MIBs---without affecting existing Cisco IOS products or NMS applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 7.

Table 7: Deprecated and Replacement MIBs

Deprecated MIB	Replacement
OLD-CISCO-APPLETALK-MIB	RFC1243-MIB
OLD-CISCO-CHASSIS-MIB	ENTITY-MIB
OLD-CISCO-CPUK-MIB	To be decided
OLD-CISCO-DECNET-MIB	To be decided
OLD-CISCO-ENV-MIB	CISCO-ENVMON-MIB
OLD-CISCO-FLASH-MIB	CISCO-FLASH-MIB
OLD-CISCO-INTERFACES-MIB	IF-MIB CISCO-QUEUE-MIB
OLD-CISCO-IP-MIB	To be decided
OLD-CISCO-MEMORY-MIB	CISCO-MEMORY-POOL-MIB
OLD-CISCO-NOVELL-MIB	NOVELL-IPX-MIB
OLD-CISCO-SYS-MIB	(Compilation of other OLD* MIBs)
OLD-CISCO-SYSTEM-MIB	CISCO-CONFIG-COPY-MIB
OLD-CISCO-TCP-MIB	CISCO-TCP-MIB
OLD-CISCO-TS-MIB	To be decided
OLD-CISCO-VINES-MIB	CISCO-VINES-MIB
OLD-CISCO-XNS-MIB	To be decided

---

Note Cisco Management Information Base (MIB) User Quick Reference is no longer published. If you have an account with CCO, you can find the current list of MIBs supported by Cisco. To reach the Cisco Network Management Toolkit, go to CCO, press Login, and click to Software Center: Network Mgmt Products: Cisco Network Management Toolkit: Cisco MIB.

---

Caveats

Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.

This section only contains open and resolved caveats for the current Cisco IOS maintenance release.

All caveats in Cisco IOS Release 12.1 and Cisco IOS Release 12.1 T are also in Cisco IOS Release 12.1(2)XH.

For information on caveats in Cisco IOS Release 12.1, see Caveats for Cisco IOS Release 12.1.

For information on caveats in Cisco IOS Release 12.1 T, see Caveats for Cisco IOS Release 12.1 T, which lists severity 1 and 2 caveats and is located on CCO and the Documentation CD-ROM.

Note If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for any release. To reach Bug Navigator II, go to CCO and press Login. Then go to Software Center: Cisco IOS Software: Cisco Bugtool Navigator II. Another option is to go to http://www.cisco.com/support/bugtools.

Open Caveats---Cisco IOS Release 12.1(2)XH

This section describes possibly unexpected behavior by Cisco IOS Release 12.1(2)XH and describes only severity 1 and 2 caveats:

• CSCdr47841

If hardware compression is enabled on a Cisco 3620 or 3640 router with a compression network module (NM-COMPR) and any Fast Ethernet network module (NM-1FE2W, NM-2FE2W, NM-1FE1R2W or NM-2W) compression will fail.

If hardware compression is enabled on a Cisco 3660 router with a compression AIM card (AIM-COMPR4) and any Fast Ethernet network module (NM-1FE2W, NM-2FE2W, NM-1FE1R2W or NM-2W) compression will fail

The workaround is to use software compression.

• CSCdr45670

With multicast voice and fast or Cisco Express Forwarding (CEF) switching turned on, compression will corrupt the packets and cause loss of voice path.

The workarounds are:

• use unicast voice

• turn off fast switching by using the no ip route-cache command

• switch off rtp compression by using the no ip rtp header-compression command

Related Documentation

The following sections describe the documentation available for the Cisco 3600. These documents consist of hardware and software installation guides, Cisco IOS configuration and command references, system error messages, feature modules, and other documents.

Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online on CCO  and the Documentation CD-ROM.

Use these release notes with these documents:

• Release-Specific Documents

• Platform-Specific Documents

• Feature Modules

• Cisco IOS Software Documentation Set

Release-Specific Documents

The following documents are specific to Cisco IOS Release 12.1 and are located on CCO  and the Documentation CD-ROM:

• Cross-Platform Release Notes for Cisco  IOS Release 12.1 

On CCO  at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes

• Product bulletins, field notices, and other release-specific documents on CCO  at:

Technical Documents

• Caveats for Cisco IOS Release 12.1(2)XH

As a supplement to the caveats listed in "Caveats" in these release notes, see Caveats for Cisco  IOS Release 12.1 and Caveats for Cisco  IOS Release 12.1 T, which contain caveats applicable to all platforms for all maintenance releases of Cisco IOS Release 12.1 and Cisco IOS Release 12.1 T.

On CCO  at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats

Platform-Specific Documents

These documents are available for the Cisco 3600 on CCO and the Documentation CD-ROM:

• Cisco 3600 Series Hardware Installation Guide

• Software Configuration Guide for Cisco 2600 and Cisco 3600 Series Routers

• Cisco Network Module Hardware Installation Guide

• Cisco WAN Interface Cards Hardware Installation Guide

• Update to Cisco WAN Interface Cards Hardware Installation Guide

• Cisco Modular Access Router Cable Specifications

• Redundant Power Systems

• Regulatory Compliance and Safety Info for the Cisco 3600 Series

• Cisco 3600 Series Configuration Notes

• Digital Modem Portware documents

• Analog Modem Firmware documents

• Release notes

On CCO, beginning under the Service & Support heading:

Technical Documents: Documentation Home Page: Access Servers and Access Routers: Modular Access Routers: Cisco 3600 Series Routers

On the Documentation CD-ROM:

Access Servers and Access Routers: Modular Access Routers: Cisco 3600 Series Routers

Feature Modules

Feature modules describe new features supported by Cisco IOS Release 12.1(2)XH and are updates to the Cisco IOS documentation set. A feature module consists of a brief overview of the feature, benefits, configuration tasks, and a command reference. As updates, the feature modules are available online only. Feature module information is incorporated in the next printing of the Cisco IOS documentation set.

On CCO  at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation

On the Documentation CD-ROM at:

Cisco IOS Software Documentation Set

The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents that are shipped with your order in electronic form on the Documentation CD-ROM---unless you specifically ordered the printed versions.

Documentation Modules

Each module in the Cisco IOS documentation set consists of two books: a configuration guide and a corresponding command reference. Chapters in a configuration guide describe protocols, configuration tasks, Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference.

On CCO  and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.

On CCO  at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References

On the Documentation CD-ROM at:

Cisco IOS Release 12.1 Documentation Set

Table 8 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form if ordered.

Note You can find the most current Cisco IOS documentation on CCO  and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed.

On CCO  at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1

On the Documentation CD-ROM at:

---

Note Cisco Management Information Base (MIB) User Quick Reference is no longer published. If you have an account with CCO, you can find the current list of MIBs supported by Cisco. To reach the Cisco Network Management Toolkit, go to CC, press Login, and click to Software Center: Network Mgmt Products: Cisco Network Management Toolkit: Cisco MIB.

---

Obtaining Documentation

World Wide Web

You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.

Documentation CD-ROM

Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly. Therefore, it is probably more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.

Ordering Documentation

Registered CCO users can order the Documentation CD-ROM and other Cisco Product documentation through our online Subscription Services at http://www.cisco.com/cgi-bin/subcat/kaojump.cgi.

Nonregistered CCO users can order documentation through a local account representative by calling Cisco's corporate headquarters (California, USA) at 408 526-4000 or, in North America, call 800 553-NETS (6387).

Obtaining Technical Assistance

Cisco provides Cisco Connection Online (CCO)  as a starting point for all technical assistance. Warranty or maintenance contract customers can use the Technical Assistance Center. All customers can submit technical feedback on Cisco documentation using the web, e-mail, a self-addressed stamped response card included in many printed documents, or by sending mail to Cisco.

Cisco Connection Online

Cisco continues to revolutionize how business is done on the Internet. Cisco Connection Online is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.

CCO's broad range of features and services helps customers and partners to streamline business processes and improve productivity. Through CCO, you will find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online support services, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.

Customers and partners can self-register on CCO to obtain additional personalized information and services. Registered users may order products, check on the status of an order and view benefits specific to their relationships with Cisco.

You can access CCO  in the following ways:

• WWW: www.cisco.com

• Telnet: cco.cisco.com

• Modem using standard connection rates and the following terminal settings: VT100 emulation; 8 data bits; no parity; and 1 stop bit.

  • From North America, call 408 526-8070

  • From Europe, call 33 1 64 46 40 82

You can e-mail questions about using CCO to cco-team@cisco.com.

Technical Assistance Center

The Cisco Technical Assistance Center (TAC) is available to warranty or maintenance contract customers who need technical assistance with a Cisco product that is under warranty or covered by a maintenance contract.

To display the TAC web site that includes links to technical support information and software upgrades and for requesting TAC support, use www.cisco.com/techsupport.

To contact by e-mail, use one of the following:

Language	E-mail Address
English	tac@cisco.com
Hanzi (Chinese)	chinese-tac@cisco.com
Kanji (Japanese)	japan-tac@cisco.com
Hangul (Korean)	korea-tac@cisco.com
Spanish	tac@cisco.com
Thai	thai-tac@cisco.com

In North America, TAC can be reached at 800 553-2447 or 408 526-7209. For other telephone numbers and TAC e-mail addresses worldwide, consult the following web site: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.

Software Configuration Tips on the Cisco Technical Assistance Center Home Page

If you have a CCO log-in account, you can access the following URL, which contains links and tips on configuring your Cisco products:

http://www.cisco.com/kobayashi/technotes/serv_tips.shtml

This URL is subject to change without notice. If it changes, point your Web browser to CCO, press Login, and click on this path: Technical Assistance Center: Technical Tips.

The following sections are provided from the Technical Tips page:

• Access Dial Cookbook---Contains common configurations or recipes for configuring various access routes and dial technologies.

• Field Notices---Notifies you of any critical issues regarding Cisco products and includes problem descriptions, safety or security issues, and hardware defects.

• Frequently Asked Questions---Describes the most frequently asked technical questions about Cisco hardware and software.

• Hardware---Provides technical tips related to specific hardware platforms.

• Hot Tips---Describes popular tips and hints gathered from the Cisco Technical Assistance Center (TAC). Most of these documents are available from the TAC Fax-on-demand service. To reach Fax-on-demand and receive documents at your fax machine from the United States, call 888 50-CISCO (888 502-4726). From other areas, call 650 596-4408.

• Internetworking Features---Lists tips on using Cisco  IOS software features and services.

• Sample Configurations---Provides actual configuration examples that are complete with topology and annotations.

Documentation Feedback

If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.

You can e-mail your comments to bug-doc@cisco.com.

To submit your comments by mail, for your convenience many documents contain a response card behind the front cover. Otherwise, you can mail your comments to the following address:

Cisco Systems, Inc.
Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate and value your comments.

Posted: Wed Jun 21 16:55:29 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.