Table Of Contents
Release Notes for the
Cisco 1401 Router for
Cisco IOS Release 12.0(1)XACisco IOS Feature Sets for the Cisco 1401 Router
New Features in Release 12.0(1)XA
Flash defaults to Flash:1 on Multipartition Flash
Open Caveats—Release 12.0(1)XA
Cisco IOS Software Documentation
Software Configuration Tips on the Cisco TAC Home Page
Release Notes for the
Cisco 1401 Router for
Cisco IOS Release 12.0(1)XA
November 2, 1998
These release notes describe the new features and significant software components for Cisco IOS Release 12.0(1)XA for the Cisco 1401 router.
Note
The Cisco 1401 router supports a subset of the Cisco IOS features described in these release notes. The Cisco IOS features that are available for the Cisco 1401 router are listed in the section "Cisco IOS Feature Sets for the Cisco 1401 Router" on page 3.
Contents
These release notes discuss the following topics:
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System Requirements
This section describes the system requirements for Release 12.0(1)XA and includes the following sections:
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Memory Requirements
Table 1 describes the memory requirements for the Cisco IOS feature sets supported by Cisco IOS Release 12.0(1)XA on the Cisco 1401 router.
Cisco 1401 Router
The Cisco 1401 router is an ATM-25 router for Digital Subscriber Line (DSL) networks that connects small businesses and remote branch offices to the Internet or to larger, corporate networks. The router features one 10BaseT and one ATM-25 interface to provide a seamless connection from a 10BaseT local area network (LAN) to an ATM network. The ATM-25 interface can be connected to an external, DSL modem to provide a connection of up to 8 Mbps to the Internet or to corporate networks.
Following are some of the key features of the Cisco 1401 router:
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Cisco IOS Feature Sets for the Cisco 1401 Router
The Cisco IOS software is packaged into "feature sets" (also called "software images"). There are many different feature sets available, and each feature set contains a specific subset of Cisco IOS features. The Plus keyword is used to identify feature sets with a value-added option that contains a variable set of additional features depending on the hardware platform selected.
The following list shows which feature sets are supported on the Cisco 1401 router. These feature sets only apply to Cisco IOS Release 12.0(1)XA:
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Feature Set Tables
To determine what features are available with each feature set (software image), see . The table summarizes the features you can use when running a specific feature set on the Cisco 1401 router for Cisco IOS Release 12.0(1)XA. The feature set table uses the following symbol conventions to identify features:
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New and Changed Information
The following sections list the new features supported by the Cisco 1401 router in Cisco IOS Release 12.0(1)XA.
New Features in Release 12.0(1)XA
The following new features in Cisco IOS Release 12.0(1)XA are available for the Cisco 1401 router. Release 12.0(1)XA also supports the features in Cisco IOS Release 12.0(1)T, which are described in the Release Notes for Cisco IOS Release 12.0 T. To access this document, see the section, "Related Documentation."
The following new features in Cisco IOS Release 12.0(1)XA are available for the Cisco 1401 router.
Support for Cisco 1401
This is the first Cisco IOS release to include support for the Cisco 1401 router.
Important Notes
This section describes warnings and cautions about using the Cisco IOS Release 12.0(1)XA software.
Flash defaults to Flash:1 on Multipartition Flash
When using a multipartition flash card, the various flash partitions are referred to as "flash:1:", "flash:2:", etc. If you specify only "flash" in a multipartition flash, the parser assumes "flash:1:." For example, if you type "show flash all" the parser defaults to "show flash:1: all" and only the flash information for the first partition displays. To see information for all flash partitions, type "show flash ?" This will list all of the valid partitions. Then enter "show flash:xx: all" on each valid partition.
Traffic Shaping
On the ATM25 interface of the C1400 there are two types of traffic shaping: hardware-based and software-based. Hardware-based traffic shaping is provided by the ATM SAR chip and is enabled on a per-pvc basis by one of the following IOS PVC configuration commands:
ubr <peak-cell-rate>
ubr+ <peak-cell-rate> <mininum-guaranteed-cell-rate>
vbr-nrt <peak-cell-rate> <sustainable-cell-rate> <maximum-burst-size>The SAR chip has "rate counters" that control the rate at which the current buffer up for segmentation is going to be transmitted. Ideally, the SAR chip could be programmed with values for all of the above command parameters. Unfortunately, it only has the rate counters, which specify a divisor of the basic line rate of 25 Mbps and which really sets the maximum transmission rate (peak-cell-rate) for the channel. Note that with the "ubr" and "ubr+" commands, the rate counter for the PVC is obtained from the <peak-cell-rate> parameter. With the "vbr-nrt" command, the rate counter is obtained from the <sustainable-cell-rate> parameter. While the <mininum-guaranteed-cell-rate> parameter in the "ubr+" command and the <peak-cell-rate> parameter in the "vbr-nrt" command can be specified by the user, they are ignored by the ATM25 driver.
Software-based traffic shaping is enabled on a per-interface basis via the "traffic-shape" interface configuration command. For performance reasons, and since for ATM interfaces you most likely want to do shaping on a per-pvc basis, the ATM driver does not support software-based traffic shaping while fastswitching. However, if fast-switching is disabled and the "traffic-shape" interface configuration command is enabled, then software traffic shaping will occur. (See CSCdk28377 for more information).
Open Caveats—Release 12.0(1)XA
There are no new caveats in Cisco IOS Release 12.0(1)XA. However, the caveats in Cisco IOS Releases 12.0(1) T apply to Release 12.0(1)XA. For descriptions of Cisco IOS Release 12.0 T caveats, see the Cisco IOS Software Release 12.0 T Caveats. To access this document, see the section, "Related Documentation."
Related Documentation
The following sections describe the documentation available for the Cisco 1401 router. Typically these documents consist of hardware installation guides, software installation guide guides, Cisco IOS configuration and command references, system error messages, and feature modules, which are updates to the Cisco IOS documentation. Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online only.
The most up-to-date documentation can be found on the Web via Cisco Connection Online (CCO) and on the latest Documentation CD-ROM. These electronic documents might contain updates and modifications made after the paper documents were printed. For information on CCO, refer to the "Cisco Connection Online" section later in this document. For more information on to the CD-ROM, refer to the "Documentation CD-ROM" section later in this document.
The following sections describe the documentation related to these release notes:
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Cisco IOS Software Documentation
Release 12.0(1)XA release notes should be used in conjunction with the Release Notes for Cisco IOS Release 12.0 T. This document describes the release from which the current special release is derived.
Additional documentation for Cisco IOS Release 12.0 T is listed below.
To access release-specific documentation on the documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco Product Documentation/Cisco IOS Software Configuration/Cisco IOS Release 12.0
The following documents apply to Cisco IOS Release 12.0(1)T:
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Hardware Documents
Hardware documentation for the Cisco 1401 router is listed below. These documents ship with the Cisco 1401 router.
To access hardware documents on CCO, follow this path:
Products and Ordering: Cisco Documentation: Cisco Product Documentation/DSL Products/Cisco 1401
To access hardware documentation on the documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco Product Documentation/DSL Products/Cisco 1401
The following documents are specific to the Cisco 1401 router:
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Software Documents
Cisco IOS software documentation is listed in . Software documentation consists of the Cisco IOS configuration guides and command references and also includes several supporting documents. These documents are shipped with the Cisco 1401 router in electronic form on the Documentation CD-ROM, unless you specifically ordered the printed version of the documents.
To access software documents on CCO, follow this path:
Products and Ordering: Cisco Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0
To access software documentation on the documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0
Note
Service and Support
For service and support for a product purchased from a reseller, contact the reseller. Resellers offer a wide variety of Cisco service and support programs, which are described in the section "Service and Support" in the information packet that shipped with your product.
Note
For service and support for a product purchased directly from Cisco, use CCO.
Software Configuration Tips on the Cisco TAC Home Page
The following URL contains links to access helpful tips on configuring your Cisco products:
http://www.cisco.com/kobayashi/serv_tips.shtml
This URL is subject to change without notice. If it changes, point your web browser to http://www.cisco.com/, and follow this path: Software & Support, Technical Tips (button on left margin).
"Hot Tips" are 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 access fax-on-demand and receive documents at your fax machine from the USA, call 888-50-CISCO (888-502-4726). From other areas, call 415-596-4408.
The following sections are provided from the Technical Tips page:
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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:
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For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
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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 current 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.
If you are reading Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.
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