Table Of Contents
Release Notes for the Cisco 800 and SOHO 90 Series Routers for Cisco IOS Release 12.2(8)YN
Determining the Software Version
Upgrading to a New Software Release
New Hardware Features in Release 12.2(8)YN
New Software Features in Release 12.2(8)YN
Flash File System Squeeze Utility
Backup Dial Through Console Port
New Software Features in Release 12.2(8)T
Backup Dial Through Console Port
Resolved Caveats - Release 12.2(8)YN2
Open Caveats - Release 12.2(8)YN
Obtaining Technical Assistance
Release Notes for the Cisco 800 and SOHO 90 Series Routers for Cisco IOS Release 12.2(8)YN
July 30, 2003
These release notes describe new features and significant software components for the Cisco 831 and 837 routers, and Cisco SOHO 91, and SOHO 97 routers that support Cisco IOS Release 12.2 T, up to and including Release 12.2(8)YN2. These release notes are updated as needed to describe new memory requirements, new features, new hardware support, software platform deferrals, microcode or modem code changes, related document changes, and any other important changes. Use these release notes with the Cross-Platform Release Notes for Cisco IOS Release 12.2 T located on CCO and the Documentation CD.
For a list of the software caveats that apply to Release 12.2(8)YN2, refer to the section "Caveats" and to the online Caveats for Cisco IOS Release 12.2 T document. The caveats document is updated for every 12.2 T maintenance release and is located on Cisco Connection Online (CCO) and the Documentation CD.
Contents
These release notes discuss the following topics:
•Obtaining Technical Assistance
System Requirements
This section describes the system requirements for Release 12.2(8)YN2 and includes the following sections:
•Determining the Software Version
•Upgrading to a New Software Release
Memory Requirements
This section describes the memory requirements for the Cisco IOS feature sets supported by Cisco IOS Release 12.2(8)YN2 on the Cisco 831, 837, SOHO 91, and SOHO 97 routers.
Hardware Supported
Cisco IOS Release 12.2(8)YN2 supports the following Cisco 831, 837, SOHO 91, and SOHO 97 routers:
•Cisco 831 Routers
•Cisco 837 Routers
•Cisco SOHO 91 Routers
•Cisco SOHO 97 Routers
For detailed descriptions of new hardware features and which features are supported on each router, see the "New and Changed Information" section. For descriptions of existing hardware features and supported modules, see the hardware installation guides, configuration and command reference guides, and additional documents specific to Cisco 831, 837, SOHO 91, and SOHO 97 routers, which are available on Cisco.com and the Documentation CD at the following location:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/800/index.htmThis URL is subject to change without notice. If it changes, point your web browser to CCO, and click the following path:
Cisco Product Documentation: Access Servers and Access Routers: Fixed Access : Cisco 800 Series Routers: <platform_name>Determining the Software Version
To determine the version of Cisco IOS software currently running on your Cisco 831, 837, SOHO 91, and SOHO 97 router, log in to the router and enter the show version EXEC command. The following sample output from the show version command indicates the version number on the second output line:
router> show versionCisco Internetwork Operating System SoftwareIOS (tm) C837 Software (C837-K9O3SY6-M), Version 12.2(8)YN2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1) Synched to technology version 12.2(11.2u)TUpgrading to a New Software Release
For general information about upgrading to a new software release, see Software Installation and Upgrade Procedures located at: http://www.cisco.com/warp/public/130/upgrade_index.shtml.
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(8)YN2 supports the same feature sets as Releases 12.2 and 12.2(8)T, but Release 12.2(8)YN2 includes new features supported by the Cisco 831, 837, SOHO 91, and SOHO 97 routers.
Caution 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 can be denied or subject to delay due to United States government regulations. When applicable, the 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 2 lists the features and feature sets supported in Cisco IOS Release 12.2(8)YN2.
The table uses the following conventions:
•Yes—The feature is supported in the software image.
•No—The feature is not supported in the software image.
•In—The number in the "In" column indicates the Cisco IOS release in which the feature was introduced. For example, "12.2(8)YN" means the feature was introduced in 12.2(8)YN. If a cell in this column is empty, the feature was included in a previous release or the initial base release.
Note These feature set tables only contain a selected list of features, which are cumulative for Release 12.2(8)nn early deployment releases only (nn identifies each early deployment release). The tables do not list all features in each image—additional features are listed in the Cross-Platform Release Notes for Cisco IOS Release 12.2 T and Release 12.2 T Cisco IOS documentation.
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 831, 837, SOHO 91, and SOHO 97 routers for Release 12.2(8)YN2.
New Hardware Features in Release 12.2(8)YN
The Cisco 831, 837, SOHO 91, and SOHO 97 have the following additional features over existing broadband routers:
•A 4-port Ethernet switch.
•Hardware encryption coprocessor.
•Virtual Aux port that uses the same physical port as the console port.
•A newer MPC857DSL processor.
New Software Features in Release 12.2(8)YN
The following sections describe the new software features supported by the Cisco 831, 837, SOHO 91, and SOHO 97 routers for Release 12.2(8)YN.
Flash File System Squeeze Utility
When a flash memory device is full, the files must be rearranged so the space used by the deleted files can be reclaimed. The "squeeze" feature erases all the deleted files from the router's file system and copies all the valid files from the beginning of the flash memory. The squeeze operation can take as long as several minutes because it involves erasing and rewriting almost an entire flash memory space. To enable this feature, the entire flash device, including any partitions, has to be completely erased. There is a provision in the erase command to disable this squeeze utility.
Backup Dial Through Console Port
Backup Dial Through Console Port (Dial-on-Demand Routing-DDR) backup is a method of bringing up an alternate link should the primary WAN link fail. The router configured for DDR backup recognizes that the connection to the remote site has been lost, and initiates a DDR connection to the remote site using the modem setup via auxiliary port. This feature provides protection against WAN downtime by allowing configuration of a backup modem line connection.
When backup dial is enabled, and DDR backup is configured, the router recognizes that the WAN connection is lost, and initiates a DDR connection to the remote site using the modem setup via auxiliary port. Once the primary (WAN) link is up, the router diverts the traffic back to the WAN media.
New Software Features in Release 12.2(8)T
For information regarding the features supported in Cisco IOS Release 12.2 T, refer to the Cross-Platform Release Notes and New Feature Documentation links at the following location on CCO:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/xprn122t/index.htm
This URL is subject to change without notice. If it changes, point your web browser to CCO, and click the following path:
Service & Support: Technical Documents: Cisco IOS Software: Release 12.2: Release Notes: Cross-Platform Release Notes (Cisco IOS Release 12.2T)
Limitations
Backup Dial Through Console Port
•Since both the console port and auxiliary port in the IOS configuration correspond to the same physical RJ-45 port, both ports cannot be activated at the same time. A CLI is needed to enable/disable either one of the ports.
•If the backup dial configuration is enabled through NVRAM, the console port is not available. Use the reverse telnet command to disable the back up dial feature and access the router through the console port again. If the telnet command is not used, the router must be rebooted to make the console port available.
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(8)YN2. 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.
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 toCisco.com and click Service & Support: Technical Assistance Center: Tool Index: Bug Toolkit. Another option is to go to http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.
Resolved Caveats - Release 12.2(8)YN2
Cisco IOS Release 12.2(8)YN2 is a rebuild release for Cisco IOS Release 12.2(8)YN. This section describes unexpected behavior that is fixed in Release 12.2(8)YN2.
Miscellaneous
CSCdz71127
Cisco routers and switches running Cisco IOS software and configured to process Internet Protocol version 4 (IPv4) packets are vulnerable to a Denial of Service (DoS) attack. A rare sequence of crafted IPv4 packets sent directly to the device may cause the input interface to stop processing traffic once the input queue is full. No authentication is required to process the inbound packet. Processing of IPv4 packets is enabled by default. Devices running only IP version 6 (IPv6) are not affected. A workaround is available.
Cisco has made software available, free of charge, to correct the problem.
This advisory is available at
http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml
CSCea02355
Cisco routers and switches running Cisco IOS software and configured to process Internet Protocol version 4 (IPv4) packets are vulnerable to a Denial of Service (DoS) attack. A rare sequence of crafted IPv4 packets sent directly to the device may cause the input interface to stop processing traffic once the input queue is full. No authentication is required to process the inbound packet. Processing of IPv4 packets is enabled by default. Devices running only IP version 6 (IPv6) are not affected. A workaround is available.
Cisco has made software available, free of charge, to correct the problem.
This advisory is available at
http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml
Open Caveats - Release 12.2(8)YN
Miscellaneous
CSCdy67155
Extra packets sent during performance testing causes test failure.
Workaround:
There is no workaround proposed as of now.
CSCdz01314
Interface async1 (console/aux) generated CRC erros at input.
Workaround:
There is no workaround proposed as of now.
CSCdy50090
Second copy of SAs for E1 does not show with IPSEC/GRE configuration.
Workaround:
There is no workaround proposed as of now.
CSCdy04573
CDP-4-DUPLEX_MISMATCH message with auto duplex configured in peer side.
•Configure the global command no cdp advertise-v2 or
•Disable CDP on the complaining interface(s) or
•Change to Error Syslog level
Related Documentation
The following sections describe the documentation available for the Cisco 831, 837, SOHO 91, and SOHO 97 routers. 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.
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(8)YN2. They are located on Cisco.com and the Documentation CD (under the heading Service & Support):
•To reach the Cross-Platform Release Notes for Cisco IOS Release 12.2 T, click this path:
Technical Documents: Cisco IOS Software: Release 12.2: Release Notes: Cisco IOS Release 12.2 T
•To reach product bulletins, field notices, and other release-specific documents, click this path:
Technical Documents: Product Bulletins
•To reach the Caveats for Cisco IOS Release 12.2 and Caveats for Cisco IOS Release 12.2 T documents, which contain caveats applicable to all platforms for all maintenance releases of Release 12.2, click this path:
Technical Documents: Cisco IOS Software: Release 12.2: Caveats
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 toCisco.com and click Service & Support: Technical Assistance Center: Tool Index: Bug Toolkit. Another option is to go to http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.
Platform-Specific Documents
Hardware installation guides, configuration and command reference guides, and additional documents specific to Cisco 831, 837, SOHO 91, and SOHO 97 series routers are available on Cisco.com and the Documentation CD at the following location:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/800/index.htm
This URL is subject to change without notice. If it changes, point your web browser to CCO, and click the following path:
Cisco Product Documentation: Access Servers and Access Routers: Fixed Access Routers: Cisco 800 Series Routers: <platform_name>
Obtaining Documentation
These sections explain how to obtain documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at this URL:
Translated documentation is available at this 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
You can order Cisco documentation in these ways:
•Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Networking Products MarketPlace:
http://www.cisco.com/cgi-bin/order/order_root.pl
•Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:
http://www.cisco.com/go/subscription
•Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, U.S.A.) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).
Documentation Feedback
You can submit comments electronically on Cisco.com. In the Cisco Documentation home page, click the Fax or Email option in the "Leave Feedback" section at the bottom of the page.
You can e-mail your comments to bug-doc@cisco.com.
You can submit your comments by mail by using the response card behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain online 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 with these tasks:
•Streamline business processes and improve productivity
•Resolve technical issues with online support
•Download and test software packages
•Order Cisco learning materials and merchandise
•Register for online skill assessment, training, and certification programs
If you want to obtain customized information and service, you can self-register on Cisco.com. To access Cisco.com, go to this URL:
Technical Assistance Center
The Cisco Technical Assistance Center (TAC) is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Cisco TAC inquiries 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.
The Cisco TAC resource that you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
You can use the Cisco TAC Web Site 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 this URL:
All customers, partners, and resellers who have a valid Cisco service 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 this URL to register:
http://www.cisco.com/register/
If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco TAC Web Site, you can open a case online by using the TAC Case Open tool at this URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. 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 automatically opens a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this 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). When you call the center, please have available your service agreement number and your product serial number.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
Copyright © 2002, Cisco Systems, Inc.
All rights reserved.