Table of Contents
Release Notes for Cisco IOS Release 12.2(13)ZH on the Cisco ICS 7750Contents
System Requirements
Hardware Supported
MRP and ASI Card Upgrades
Wide Area Network Interface Cards, Voice Interface Cards, and Voice WAN Interface Cards
Feature Set Tables
Important Notes
Caveats
Related Documentation
Cisco ICS 7750 Documents
Feature Navigator
Cisco IOS Software Documentation Set
Obtaining Technical Assistance
Obtaining Additional Publications and Information
Release Notes for Cisco IOS Release 12.2(13)ZH on the Cisco ICS 7750
These release notes describe features and functionality of Cisco IOS Release 12.2(13)ZH on the Cisco Integrated Communications System (ICS) 7750.
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Caution Software upgrades for the Cisco ICS 7750 are delivered in packaged system software bundles that are distributed on Cisco.com and/or on CD-ROM. Each Cisco ICS 7750 system software bundle is certified with a specific Cisco IOS release. Appropriate consideration must be given to the other software in the bundle when installing Cisco IOS software in the Cisco ICS 7750. Contact your sales representative for ordering instructions. |
These release notes are updated as needed to describe new memory requirements, new features, new hardware support, software platform deferrals, microcode changes, related document changes, and any other important changes. Use these release notes with the Cross-Platform Release Notes for Cisco IOS 12.2T located on Cisco.com and the Documentation CD-ROM.
Contents
These release notes discuss the following topics:
System Requirements
This section describes the system requirements for Release 12.2(13)ZH on the Cisco ICS 7750. It includes the following sections:
Memory Requirements
Table 1 describes the memory requirements for the Cisco IOS feature sets supported by Cisco IOS Release 12.2(13)ZH on ASIs and MRPs in a Cisco ICS 7750 chassis.
Table 1 Available Software Images and Memory Requirements for ASIs and MRPs
| Platform | Image Name | Image | Software Bundles | Required Flash Memory for the MRP300, MRP3-8FXS, MRP3-16FXS | Required Flash Memory for the MRP200, ASI81, ASI1601 | Required DRAM Memory2 | Runs From |
|---|---|---|---|---|---|---|---|
|
Reduced-IP/ |
| 1Flash memory is not used for the Cisco IOS image on ASIs and MRP200s. Since onboard flash is not available on ASIs and MRP200s, a Cisco IOS compressed image resides on the system processing engine (SPE) and is downloaded to the RAM of each ASI or MRP200 before image decompression.
2You can upgrade ASI or MRP card memory to 80 MB, 96 MB, or 128MB by installing a dual in-line memory module (DIMM) in the card DIMM slot. For memory upgrade instructions, refer to Installing Memory, PVDM, and VPN Modules in ASI Cards, MRP Cards, and SPE Cards in the Cisco ICS 7750. 3This image comprises one of the voice-only packages, and does not include data networking support. |
Hardware Supported
Cisco IOS Release 12.2(13)ZH supports ASIs and MRPs in a Cisco ICS 7750. See Table 2 for a description of the processor cards which are supported in the Cisco ICS 7750.
Processor Cards
Table 2 lists the processor cards that can be used in the Cisco ICS 7750.
Table 2 Cisco ICS 7750 Processor Cards
| Card | Card Description | Port Description |
|---|---|---|
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A single-board computer that runs system software applications such as ICS System Manager and Cisco CallManager. |
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A voice-and-data-capable router that can carry voice traffic over an IP network and can link remote Ethernet LANs to central offices over WAN links. The multiservice route processor has two slots that support combinations of WAN interface cards (WICs), voice WAN interface cards (VWICs), and Voice interface cards (VICs). It also has two slots to support Packet Voice Data modules (PVDMs). Five versions of PVDMs are available. The MRP 300 has onboard flash memory. |
Supports the data and voice interface port types listed in Table 5. |
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A voice-and-data-capable router that can carry voice traffic over an IP network and can link small-to- medium-size remote Ethernet LANs to central offices over WAN links (depending on the type of card installed in its WIC/VIC/VWIC slot) and can support connections to analog telephones, fax machines, and polycoms. It also has two PVDM slots. The MRP3-8FXS has onboard flash memory. |
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A voice-and-data-capable router that can carry voice traffic over an IP network and can link small-to- medium-size remote Ethernet LANs to central offices over WAN links (depending on the type of card installed in its WIC/VIC/VWIC slot) and can support the connection of eight analog trunks between a Central Office (CO) and an IP telephony system. It also has two PVDM slots and onboard flash memory. |
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An analog gateway that supports connections to telephones, fax machines, and polycoms. It also has two PVDM slots. The MRP3-16FXS has onboard flash memory. |
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A module that monitors the status of the chassis, power supply modules, and fans, and feeds real-time data to the system processing engines. The SAP card delivers its data to the SPE running System Manager. |
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An Ethernet switch that passes data between all system cards and to any other Ethernet switches connected to the system. |
| 1System software release 2.1.0 or later is supported only on SPE 310s. |
Table 3 lists the number of processor cards supported by a Cisco ICS 7750.
MRP and ASI Card Upgrades
You can upgrade MRP and ASI cards as follows:
- Memory. MRP and ASI cards ship with 64 MB of dynamic RAM (DRAM). You can upgrade MRP and ASI card memory to 80 MB, 96, or 128 MB by installing a dual in-line memory module (DIMM) in the card DIMM slot.
- Voice and data processing power. VICs, VWICs, and FXS modules installed in MRP or ASI cards might require additional digital signal processors (DSPs) for processing heavier volumes of voice traffic. You can install Packet Voice/Data Modules (PVDMs) in one or both of the card PVDM slots to give MRP and ASI cards more processing power.
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Note See Installing Memory, PVDM, and VPN Modules in ASI Cards, MRP Cards, and SPE Cards in the Cisco ICS 7750 for instructions on how to upgrade ASI and MRP cards. |
Table 4 provides information about the modules that you can install in ASI and MRP cards
Wide Area Network Interface Cards, Voice Interface Cards, and Voice WAN Interface Cards
Table 5 lists the WICs, VICs, and VWICs that you can order in Cisco ICS 7750 MRP and ASI 81 cards. Refer to the Cisco ICS 7750 Installation and Configuration Guide and the ICS System Manager online help for configuration instructions.
Table 5 Supported WICs, VICs and VWICs
| 1FXS = Foreign Exchange Station
2FXO = Foreign Exchange Office 3E&M = Ear and Mouth 4DID = Direct Inward Dial 5ISDN = Integrated Services Digital Network 6BRI = Basic Rate Interface 7CSU/DSU = channel services unit/data services unit |
Table 6 lists the combinations of WICs, VICs, and VWICs that are supported on MRP300s, MRP3-8FXOM1s, and MRP3-8FXSs, where the left column of the table shows that a T1, E1, 8-port FXO-M1, or 8-port FXS module is installed in Slot 0, and where the remaining columns of the table show the types of modules that could be installed in Slot 1 of a given type of MRP.
Table 6 Supported Combinations of WICS, VICs, and VWICs on MRP300s, MRP3-8FXOM1s, and MRP3-8FXSs
| 1Up to 48 voice channels are now supported on the same MRP300, in certain configurations. See the "New Software Features in Release 12.2(13)ZH" section for more information. |
Determining Your Software Release
Complete the following steps to determine the Cisco IOS software version running on Cisco ICS 7750 ASI, MRP, or SSP cards:
Step 1 On a PC, choose Start > Run.
Step 2 Enter the following command to open a Telnet session, where IP address is the IP address of the card that you wish to verify:
Step 3 Enter your login password.
Step 4 Enter the show version command:
The following is some of the output that is displayed after entering the command show version on an ASI or MRP card:
Additional output lines from the show version command include information such as the processor revision numbers, amount of available memory, hardware IDs, and partition information.
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. Release 12.2(13)ZH supports the same feature sets as Releases 12.2 and 12.2T, but Release 12.2(13)ZH can include new features supported by the Cisco ICS 7750 platform. Table 7 lists the feature sets supported by the Cisco ICS 7750.
Table 7 Feature Sets Supported by the Cisco ICS 7750
| Image Name | Feature Set Matrix Terms | Software Image |
|---|---|---|
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Cisco ICS 7750 IOS IP, IPX, AT, IBM, FW, Voice, Plus, IPSec 56 |
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Cisco ICS 7750 IOS IP, IPX, AT, IBM, FW, Voice, Plus, IPSec, 3DES |
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Cisco ICS 7750 IOS Reduced IP, Voice, Plus1 |
| 1This image comprises one of the new voice-only packages, and does not include data networking support. |
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Note For additional information about feature support for this Cisco IOS release, use the Feature Navigator. See the "Feature Navigator" section 15 for additional information. |
New and Changed Information
The following section lists the new hardware and software features supported by the Cisco ICS 7750, beginning with Cisco IOS software Release 12.2(13)ZH.
New Software Features in Release 12.2(13)ZH
Cisco IOS Release 12.2(13)ZH on the Cisco ICS 7750 supports the following features:
Enhanced ITU-T G.168 Echo Cancellation
This feature provides an alternative to the default Cisco-proprietary G.165 echo canceller (EC). The new extended EC provides improved performance for trunking gateway applications and provides a configurable tail length that supports up to 64 ms of echo cancellation.
The IOS command-line interface (CLI) has been modified to make the extended EC the default on the Cisco ICS 7750.
The extended EC offers the following improvements over the Cisco default EC:
For additional information about this feature, including the voice echo-canceller extended command, refer to the document Enhanced ITU-T G.168 Echo Cancellation .
E1 PRI QSIG and BRI QSIG (H.323)
This feature enables Cisco CallManager and the Cisco ICS 7750 to interoperate with legacy private branch exchanges (PBXs) in corporate networks, in H.323 mode. QSIG protocol support allows Cisco voice switching services to connect private branch exchanges (PBXs), key systems (KTs), and central office switches (COs) that communicate by using the QSIG protocol, which is becoming the standard for PBX interoperability in Europe and North America. QSIG is a variant of ISDN D-channel signaling. With QSIG, Cisco networks emulate the functionality of the public-switched telephone network (PSTN), and QSIG signaling messages allow the dynamic establishment of voice connections across a Cisco wide-area network (WAN) to a peer router, which can then transport the signaling and voice packets to a second private integrated services network exchange (PINX).
The Cisco voice packet network appears to the traditional QSIG PBXs as a distributed transit PBX that can establish calls to any PBX, non-QSIG PBX, or other telephony endpoint served by a Cisco gateway, including non-QSIG endpoints. When originating and terminating on QSIG endpoints, the QSIG messages are passed transparently across the network; the PBXs are responsible for processing and provisioning the supplementary services. When linking QSIG and non-QSIG endpoints served by a Cisco packet voice gateway, only basic calls are supported. In addition, all switched voice connections must be established and torn down in response to QSIG control messages.
E1 PRI QSIG Backhaul (MGCP)
PRI/Q.931 signaling backhaul is the transport of PRI signaling (Q.931 and above layers) between a media gateway (such as a Cisco access server, router, or concentrator) and a media gateway controller (such as Cisco CallManager). The media gateway controller is also referred to as a Virtual Switch Controller (VSC). Communication between the media gateway and the VSC is managed by the Media Gateway Control Protocol (MGCP).
The signaling backhaul takes place between a media gateway and the VSC. The media gateway provides an interface between the Public Switched Telephone Network (PSTN) and the packet network (IP or ATM). The VSC provides call processing and gateway control.
The general principle behind signaling backhaul is to pass as many layers of a protocol stack as possible through a gateway directly to the VSC.
Signaling backhaul usually occurs at a common boundary for all protocols. For ISDN, the signaling backhaul takes place at the boundary between Layer 2 (Q.921) and Layer 3 (Q.931). The lower layers of the protocol are terminated and processed on the gateway. The upper layers of the protocol are backhauled, or transported, to the VSC using Cisco Reliable User Datagram Protocol (RUDP) over IP. RUDP provides autonomous notification of connected and failed sessions and guarantees delivery of signaling protocols across an IP network.
Signaling backhaul provides the additional advantage of distributed protocol processing. This permits greater expandability and scalability, while offloading lower-layer protocol processing from the VSC.
Important Notes
The following sections contain important notes about Cisco IOS-related issues that can apply to the Cisco ICS 7750.
Codec Complexity Changes for BRI VICs
Before Release 12.2(13)ZH, MRPs in the Cisco ICS 7750 had to use the high-complexity image in order to support the VIC-2BRI-NT/TE. Beginning with Release 12.2(13)ZH, the following changes apply:
- The medium-complexity image is supported on BRI VICs
- The medium-complexity image is the default image on MRPs. (To use the high-complexity image, enter the codec complexity command.)
- Assuming that you are using the default configuration (high-complexity), a single DSP (a PVDM-4) is sufficient for the VIC-2BRI-NT/TE. (Before Release 12.2(13)ZH, two DSPs [a PVDM-8] were required to support the VIC-2BRI-NT/TE.)
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Note For additional information about the use of codecs and DSPs, refer to the "Configuring the Cisco ICS 7750" chapter in the Cisco ICS 7750 Installation and Configuration Guide . |
Software Images on MRP and ASI Cards
All of the MRPs and ASIs in a Cisco ICS 7750 must run the same Cisco IOS image.
Caveats
Caveats describe unexpected behavior or defects in Cisco IOS software releases. Severity 1 caveats are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these three severity levels.
Caveats in Release 12.2 T are also in Release 12.2(13)ZH. For information on caveats in Cisco IOS Release 12.2 T, refer to the Caveats for Cisco IOS Release 12.2 T document. For information on caveats in Cisco IOS Release 12.2, refer to the Caveats for Cisco IOS Release 12.2 document. These documents list severity 1 and 2 caveats, and are located on CCO and the Documentation CD.
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Note If you have an account with Cisco.com, you can also use the Bug Toolkit to find select caveats of any severity. To reach the Bug Toolkit, log in to Cisco.com and click Technical Support: Tools & Utilities: Software Bug Toolkit. Another option is to go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl . |
Open Caveats - Release 12.2(13)ZH
This section describes unexpected behavior in Release 12.2(13)ZH.
CSCdy19867
When a call to the PSTN is being made through MRP FXS and FXO interfaces on which the forward-digits all command has been entered, it is possible that the DTMF tones might be echoed back to the call originator, due to a suspected problem with the echo canceller.
Workaround—Tuning the echo canceller settings and disabling the forward all digits functionality on the necessary FXS and FXO interfaces should help solve this problem. Refer to the following documentation for more information:
CSCdy02040
If you are using an MRP or ASI with an E1 or T1 CAS trunk, if you change the TDM clocking on an E1 or T1 controller from an export clock configuration to an import clock configuration, and if the E1 or T1 controller is shut down when its clocking is changed, then configuring a DS0 group and entering a no shut command on that controller will cause intermittent call failures on some time slots.
For example, if interface T1 0/0 is configured as an export clock and interface T1 0/1 is also configured as an export clock, the following sequence of commands will cause intermittent call failures on T1 0/1:
Workaround—Do not shut down the E1 or T1 controller before changing its tdm clock configuration. Based on the example shown above, the following configuration will work:
Related Documentation
The following sections describe the documentation available for the Cisco ICS 7750. Typically, 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 Cisco.com and the Documentation CD-ROM.
Use these release notes with the documents listed in the following sections:
Release-Specific Documents
The following documents are specific to Release 12.2 and apply to Release 12.2(13)ZH. They are located on Cisco.com and the Documentation CD-ROM:
- Release Notes for Cisco IOS Release 12.2(13)ZH
Products & Services: IOS Software: Cisco IOS Software Releases 12.2: Cisco IOS Software Releases 12.2 YN: Technical Documentation: Release Notes: Cisco ICS 7750 - Cisco IOS Release 12.2(13)ZH
Product Documentation: Cisco IOS Software: Release 12.2: Release Notes: Cisco Integrated Communications System 7750: Release Notes for Cisco IOS Release 12.2(13)ZH on the Cisco ICS 7750
Products & Services: IOS Software: Cisco IOS Software Releases 12.2: Cisco IOS Software Releases 12.2 T: Technical Documentation: Release Notes: Cisco IOS Software Releases 12.2 T
Product Documentation: Cisco IOS Software: Cisco IOS Release 12.2: Release Notes: Cisco IOS Release 12.2 T
- Caveats for Cisco IOS Release 12.2 and 12.2 T
The Caveats for Cisco IOS Release 12.2 and Caveats for Cisco IOS Release 12.2 T documents contain caveats applicable to all platforms for all maintenance releases of Release 12.2.
Products & Services: IOS Software: Cisco IOS Software Releases 12.2: Cisco IOS Software Releases 12.2 T: Technical Documentation: Release Notes: Cisco IOS Software Releases 12.2 T
Product Documentation: Cisco IOS Software: Cisco IOS Release 12.2: Caveats
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Note If you have an account with Cisco.com, you can also use the Bug Toolkit to find select caveats of any severity. To reach the Bug Toolkit, log in to Cisco.com and click Technical Support: Tools & Utilities: Software Bug Toolkit. Another option is to go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl . |
Cisco ICS 7750 Documents
The documents described in this section are available on Cisco.com and on CD:
Products & Services: Voice Application Systems: Cisco ICS 7700 Series Integrated Communications Systems: Technical Documentation
On the Documentation CD-ROM (order number DOC-CONDOCCD=) at:
Product Documentation: Voice/Telephony: Cisco ICS 7750
Documentation Set
Printed versions of many of the platform-specific documents can be ordered as a boxed set (order number DOCS-7750=).
Feature Navigator
Feature Navigator is a web-based tool that enables you to quickly determine which Cisco IOS software images support a particular set of features and which features are supported in a particular Cisco IOS image. Feature Navigator is available 24 hours a day, 7 days a week.
To access Feature Navigator, you must have an account on Cisco.com. If you have forgotten or lost your account information, e-mail the Contact Database Administration group at cdbadmin@cisco.com. If you do not have an account on Cisco.com, go to http://www.cisco.com/register and follow the directions to set up an account.
To use Feature Navigator, you must have a JavaScript-enabled web browser such as Netscape 3.0 or later, or Internet Explorer 4.0 or later. Internet Explorer 4.0 always has JavaScript enabled. To enable JavaScript for Netscape 3.x or Netscape 4.x, follow the instructions provided with the web browser. For JavaScript support and enabling instructions for other browsers, check with the browser vendor.
Feature Navigator is updated when major Cisco IOS software releases and technology releases occur. You can access Feature Navigator at the following URL:
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 printed versions.
Documentation Modules
Each module in the Cisco IOS documentation set consists of one or more configuration guides and one or more corresponding command references. Chapters in a configuration guide describe protocols, configuration tasks, and 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. The Cisco IOS software documentation set is available on Cisco.com and on the Documentation CD-ROM.
Products & Services: IOS Software: Cisco IOS Software Releases 12.2 Mainline: Technical Documentation: Master Indices
On the Documentation CD-ROM at:
Product Documentation: Cisco IOS Software: Cisco IOS Release 12.2: Configuration Guides and Command References
Release 12.2 Documentation Set
Table 8 describes the contents of the Cisco IOS Release 12.2 software documentation set, which is available in both electronic and printed form.
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Note You can find the most current Cisco IOS documentation on Cisco.com and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed. |
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Note Some aspects of the complete Cisco IOS Release 12.2 software documentation set might not apply to the Cisco ICS 7750. |
Table 8 Cisco IOS Release 12.2 Documentation Set
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following URL:
Translated documentation is available at the following URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
http://www.cisco.com/public/ordsum.html
http://www.cisco.com/go/subscription
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
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.
Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you to
You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the following URL:
Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Inquiries to Cisco TAC are categorized according to the urgency of the issue:
- Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.
- Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
- Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.
- Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.
Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to the following URL:
All customers, partners, and resellers who have a valid Cisco services contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to the following URL to register:
http://www.cisco.com/register/
If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). In addition, please have available your service agreement number and your product serial number.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
http://www.cisco.com/en/US/products/products_catalog_links_launch.html
- Cisco Press publishes a wide range of networking publications. Cisco suggests these titles for new and experienced users: Internetworking Terms and Acronyms Dictionary, Internetworking Technology Handbook, Internetworking Troubleshooting Guide, and the Internetworking Design Guide. For current Cisco Press titles and other information, go to Cisco Press online at this URL:
http://www.cisco.com/en/US/about/ac123/ac114/about_cisco_packet_magazine.html
http://business.cisco.com/prod/tree.taf%3fasset_id=44699&public_view=true&kbns=1.html
http://www.cisco.com/en/US/about/ac123/ac147/about_cisco_the_internet_protocol_journal.html
http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
Copyright © 2003, Cisco Systems, Inc.
All rights reserved.