Release Notes for Cisco IOS Release 11.2(4)XA

March 3, 1997

These release notes describe the features and caveats for Cisco Internetwork Operating System (Cisco IOS) Release 11.2(4)XA for the Cisco 3600 series and Cisco 1600 series routers.

Prior to Cisco IOS Release 11.2, maintenance releases of major Cisco IOS software releases were used to deliver additional new features. Beginning with Cisco IOS Release 11.2, Cisco Systems provides software release "trains" based on a single version of Cisco IOS software. Maintenance releases of the Major train software deliver fixes to software defects only, thus providing the most stable software for your network, for the features you need. In addition to the Major train, there are Early Deployment (ED) trains, which primarily deliver new features.

The ED train that these release notes refer to--Release 11.2 XA--delivers both fixes to software defects and support for the Cisco 3600 series and Cisco 1600 series routers only. The Release 11.2 P ED train also delivers both fixes to software defects and support for new platforms but for a broader range of hardware devices. The other ED train--Release 11.2 F--delivers fixes to software defects, new platform support, and new cross-platform functionality.

Use these release notes in conjunction with the Release Notes for Cisco IOS Release 11.2, because the software caveats that apply to Release 11.2 also apply to Release 11.2(4)XA.

Introduction

These release notes discuss the following topics:

• Documentation, page 2

• Platform Support, page 2

• Features Supported by Release 11.2(4)XA, page 5

• Cisco IOS Feature Sets, page 5

• Release 11.2(4)XA Caveats, page 12

• Upgrading to a New Software Release, page 13

• Memory Requirements, page 13

• Cisco Connection Online, page 14

• Documentation CD-ROM, page 15

Documentation

For Cisco IOS Release 11.2(4)XA, the Cisco IOS documentation consists of the Feature Guide for Cisco IOS Release 11.2(4)XA. This feature guide supplements the Cisco IOS Release 11.2 configuration guide and command reference publications.

In the Feature Guide for Cisco IOS Release 11.2(4)XA, each new feature is documented in its own section, which includes configuration tasks as well as new and changed command reference pages. The Feature Guide for Cisco IOS Release 11.2(4)XA contains documentation for the new features described in these release notes. See the "Features Supported by Release 11.2(4)XA" section.

These release notes do not describe features that are available in Release 11.2, Release 11.2 P, or Release  11.2 F. For information about features in Release 11.2, refer to the Release Notes for Cisco IOS Release 11.2. For information about features in Release  11.2 P, refer to the Release Notes for Cisco IOS Release  11.2 P. For information about features in Release  11.2 F, refer to the Release Notes for Cisco IOS Release  11.2 F.

All the documents mentioned are available as printed manuals or electronic documents.

For electronic documentation of Release 11.2 router and access server software features, available on the Documentation CD-ROM, refer to the Cisco IOS Release 11.2 configuration guides and command references, which are located in the Cisco IOS Release 11.2 database.

You can also access Cisco technical documentation on the World Wide Web at http://www.cisco.com.

Platform Support

Cisco IOS Release 11.2(4)XA is supported on the following platforms:

• Cisco 3600 series routers--Cisco 3640 and Cisco 3620

• Cisco 1600 series routers--Cisco 1601, Cisco 1602, Cisco 1603, and Cisco 1604

Table 1 summarizes the LAN interfaces supported on each platform series.

Table 2 summarizes the WAN data rates and interfaces supported on each platform series.

Table 3 and Table 4 list the WAN interface cards and network modules supported on each platform series.

Features Supported by Release 11.2(4)XA

The following hardware platforms are supported by Cisco IOS Release 11.2(4)XA.

Cisco 1600 Series Routers

The Cisco 1600 series of access routers delivers the next-generation set of features and benefits for small-office Internet and intranet access: WAN flexibility, end-to-end security, end-to-end quality of service, ease of use, deployment, and management. The Cisco 1600 series routers connect small offices with Ethernet LANs to the public Internet and to a company's internal intranet or corporate LAN through several WAN connections such as ISDN, asynchronous serial, and synchronous serial. The Cisco 1600 series routers include the following models: the Cisco 1601, Cisco 1602, Cisco 1603, and Cisco 1604.

All Cisco 1600 series models include one Ethernet port, one built-in WAN port, and one WAN interface card expansion slot for additional connectivity and flexibility. The Cisco 1601 includes a built-in serial WAN port; the Cisco 1602 has an onboard 56-kbps four-wire Channel Service Unit/Data Service Unit (CSU/DSU); the Cisco 1603 has an ISDN BRI S/T port; and the Cisco 1604 includes an ISDN BRI U interface with a built-in NT1 device.

Cisco 3600 Series Routers

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

The Cisco 3640 has four network module slots; the Cisco 3620 has two slots. Each network module slot accepts a variety of network module interface cards, including LAN and WAN mixed media cards supporting Ethernet, Token Ring, and a variety of WAN technologies. These cards provide the foundation of LAN and WAN connectivity on a single modular network module. Additional applications are supported with a series of network module cards offering asynchronous and synchronous serial, ISDN PRI, and ISDN BRI interfaces.

Cisco IOS Feature Sets

The Cisco IOS software is packaged into feature sets, which are also called software images. There are many different feature sets available, and each feature set contains a specific subset of Cisco IOS features. Not all feature sets are available for all platforms. Also, some features sets support different features when run of different platforms.

This section lists the Cisco IOS software feature sets available for the Cisco 3600 series and Cisco 1600 series routers.

Table 5 through Table 7 use the following conventions to identify features:

Cisco IOS images with 40-bit Data Encryption Standard (DES) support may legally be distributed to any party eligible to receive Cisco IOS software. 40-bit DES is not a cryptographically strong solution and should not be used to protect sensitive data.

Cisco IOS images with 56-bit DES are subject to International Traffic in Arms Regulations (ITAR) controls and have a limited distribution. Images to be installed outside the U.S. require an export license. Customer orders may be denied or subject to delay because of U.S. government regulations. Contact your sales representative or distributor for more information, or send e-mail to export@cisco.com.

Table 5 shows the standard feature sets supported in Release 11.2(4)XA.

Release 11.2(4)XA Caveats

This section describes possible unexpected behavior by Release 11.2(4)XA for the Cisco 1603 router only.

A router reload is known to occur on a Cisco 1603 under the following conditions:

1. A BRI interface is initially configured with a wrong dial string and the BRI interface is already active on Layers 1 and 2.
   
   
2. A second correct dial string is configured.
   
   
3. While pinging through the correct dial string, the wrong dial string unconfigured.
   

[CSCdi81928]

Upgrading to a New Software Release

If you are upgrading to Cisco IOS Release 11.2(4)XA from an earlier Cisco IOS software release, you should save your current configuration file before configuring your access server with the Cisco IOS Release 11.2(4)XA software in the event that an unrecoverable error occurs during download or configuration. If you need help, see the "Cisco Connection Online" section.

Memory Requirements

Table 8 and Table 9 describe the memory requirements for each platform's feature set supported by Cisco IOS Release 11.2(4)XA.

Cisco Connection Online

Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.

Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.

CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.

You can access CCO in the following ways:

• WWW:  http://www.cisco.com

• WWW:  http://www-europe.cisco.com

• WWW:  http://www-china.cisco.com

• Telnet:  cco.cisco.com

• Modem:  From North America, 408 526-8070; from Europe, 33 1 64 46 40 82. Use the following terminal settings: VT100 emulation; databits: 8; parity: none; stop bits: 1; and connection rates up to 28.8 kbps.

For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@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, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more up to date than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.