Table Of Contents
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.1(3)XP
Determining Your Software Release
Upgrading to a New Software Release
New Hardware Features in Release 12.1(3)XP
1-Port ADSL WAN Interface Card
New Software Features in Release 12.1(3)XP
Caveat CSCdr91706 and IOS HTTP Vulnerability
Fan Operation in Cisco 1700 Series Routers
Flash defaults to Flash:1 on Multipartition Flash
Peak Cell Rate and Sustainable Cell Rate Values
Resolved Caveats—Release 12.1(3)XP4
Open Caveats—Release 12.1(3)XP3
Resolved Caveats—Release 12.1(3)XP3
Open Caveats—Release 12.1(3)XP
Cisco IOS Software Documentation Set
Release 12.1 Documentation Set
Obtaining Technical Assistance
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.1(3)XP
March 14, 2002
These release notes for the Cisco 1700 series describe the enhancements provided in Cisco IOS Release 12.1(3)XP4. These release notes are updated as needed.
For a list of the software caveats that apply to Cisco IOS Release 12.1(3)XP4, see the "Caveats" section and Caveats for Cisco IOS Release 12.1 T. The caveats document is updated for every maintenance release and is located on Cisco Connection Online (Cisco.com) and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.1 located on Cisco.com and the Documentation CD-ROM.
Contents
These release notes discuss the following topics:
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Obtaining Technical Assistance
System Requirements
This section describes the system requirements for Release 12.1(3)XP4 and includes the following sections:
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Memory Requirements
Hardware Supported
Cisco IOS Release 12.1(3)XP4 supports the Cisco 1700 series routers:
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For detailed descriptions of the new hardware features, see the documents listed in the "Platform-Specific Documents" section.
Cisco 1720
The 1720 router provides Internet and intranet access, and includes the following:
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The Cisco 1720 router has the following hardware components:
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The Cisco 1720 router supports any combination of one or two of the following WAN interface cards, which are shared with the Cisco 1600, 2600, and 3600 routers:
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Cisco 1750
The voice-and-data capable Cisco 1750 router provides global Internet and company intranet access, and includes the following:
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The Cisco 1750 router has the following hardware components:
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The Cisco 1750 router also supports any combination of one or two of the following WAN interface cards, which are shared with the Cisco 1600, 1720, 2600, and 3600 routers:
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The Cisco 1750 router supports any combination of one or two of the following voice interface cards, which are shared with the Cisco 2600 and 3600 routers:
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Determining Your Software Release
To determine the version of Cisco IOS software running on your Cisco 1700 series, log in to the platform and enter the show version EXEC command:
router> show versionCisco Internetwork Operating System SoftwareIOS(tm) Software (c1700-y-mz), Version 12.1(3)XP4, RELEASE SOFTWAREUpgrading 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 12.1(3)XP4 supports the same feature sets as Releases 12.1 and 12.1 T, but Release 12.1(3)XP4 can include new features supported by the Cisco 1700 series routers.
Caution
Table 2 through Table 5 list the features and feature sets supported by the Cisco 1700 series routers in Cisco IOS Release 12.1(3)XP4. The tables use the following conventions:
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New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 1700 series for Release 12.1(3)XP4.
New Hardware Features in Release 12.1(3)XP
The following new hardware feature is supported by the Cisco 1700 series for Cisco IOS Release 12.1(3)XP:
1-Port ADSL WAN Interface Card
The ADSL WAN interface card is a 1-port WAN interface card (WIC) for the Cisco 1700 series of modular access routers. The card provides asymmetric digital subscriber line (ADSL) high-speed digital data transfer between a single customer premises equipment (CPE) subscriber and the central office.
The ADSL WIC is compatible with the Alcatel Digital Subscriber Loop Access Multiplexer (DSLAM), the Cisco 6260 DSLAM with Flexi-line cards and the Cisco 6130 DSLAM with Flexi-line cards. It supports Asynchronous Transfer Mode (ATM) Adaptation Layer (AAL)5 (AAL5) and various classes of Quality of Service (QoS) for both voice and data service.
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New Software Features in Release 12.1(3)XP
The following new software features are supported by the Cisco 1700 series for Cisco IOS Release 12.1(3)XP:
PPPoE
The Point to Point over Ethernet (PPPoE) feature is PPP encapsulation over ATM adaptation layer 5 (AAL5) to support bridged protocols. The encapsulation method is AAL5 Subnetwork Access Protocol (AAL5SNAP), which is PPP over Ethernet over Logical Link Control and Subnetwork Access Protocol (LLC/SNAP) over AAL5 over ATM. Although this encapsulation primarily supports bridging, if the router is configured to support routing, you can use PPPoE for routing.
PPPoA (RFC 2364)
The Point to Point over ATM (PPPoA) feature is PPP encapsulation over ATM AAL5 to support routed protocols. There are two encapsulation methods. The first method is AAL5MUX, which is PPP over AAL5 over ATM. The second method is AAL5SNAP, which is PPP over SNAP/LLC over AAL5 over ATM. PPPoA cannot be used for bridging.
Support for RFC1483
RFC1483 provides multi-protocol encapsulation over ATM AAL5 to support bridged and routed protocols. The feature includes two encapsulation methods. The first method, LLC/SNAP encapsulation, multiplexes multiple protocols over a single virtual circuit (VC). The second method, VC-multiplexed, assumes each protocol is carried over a separate VC.
New or Modified Commands
Release 12.1(3)XP contains the following three new or modified Cisco IOS commands for configuring the ADSL WAN interface card:
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For details about these commands and ADSL WAN interface card configuration instructions, see the following publications:
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Important Notes
The following sections contain important notes that can apply to the Cisco 1700 series.
Caveat CSCdr91706 and IOS HTTP Vulnerability
A defect in multiple releases of Cisco IOS software causes a Cisco router or switch to halt and reload if the IOS HTTP service is enabled and you browse to http://router-ip/anytext?/ and enter the enable password when it is requested. This defect can be exploited to produce a denial of service (DoS) attack. This vulnerability can only be exploited if the enable password is known or not set.
The vulnerability, identified as Cisco bug ID CSCdr91706, affects virtually all mainstream Cisco routers and switches running Cisco IOS software releases 12.0 through 12.1, inclusive. This is not the same defect as CSCdr36952.
The vulnerability has been corrected and Cisco is making fixed releases available for free to replace all affected IOS releases. Cisco urges all customers to upgrade to releases that are not vulnerable to this defect as listed in the complete advisory, which is available at: http://www.cisco.com/warp/public/707/ ioshttpserverquery-pub.shtml. You are strongly encouraged to read the complete advisory.
Cisco Express Forwarding
When installed in a Cisco 1720 or 1750 router, the Cisco Virtual Private Network (VPN) module does not support Cisco express forwarding (CEF).
Fan Operation in Cisco 1700 Series Routers
The fans in Cisco 1700 series routers stay off until thermally activated.
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 enter 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, enter show flash ?. This will list all of the valid partitions. Then enter show flash:xx: all on each valid partition.
Peak Cell Rate and Sustainable Cell Rate Values
On Cisco 1700 routers, specify the Peak Cell Rate (PCR) and Sustainable Cell Rate (SCR) as multiples of 32 Kbps. Other rates are treated as the next lower value of a multiple of 32. For example, an entered PCR value of 150 is considered 128.
Using the boot flash Command
Booting a Cisco 1700 series router with the commands boot flash or boot system flash results in unpredictable behavior. To work around this problem, be sure to enter a colon (:) following both commands (for example, boot flash: or boot system flash:.)
Caveats
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.
All caveats in Cisco IOS Release 12.1 and Cisco IOS Release 12.1 T are also in Cisco IOS Release 12.1(3)XP4.
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 Cisco.com and the Documentation CD-ROM.
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Resolved Caveats—Release 12.1(3)XP4
This section describes possibly unexpected behavior by software releases prior to Release 12.1(3)XP4 that have been resolved in Release 12.1(3)XP4 and above.
Management
CSCdw65903
An error can occur with management protocol processing. Please use the following URL for further information:
http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdw65903
Open Caveats—Release 12.1(3)XP3
This section describes possibly unexpected behavior by Release 12.1(3)XP3. Only severity 1 through 3 caveats are included.
Miscellaneous
CSCds04747
Connection setup improvements.
CSCds32217
D-write community string readable with read-only community, Cisco IOS.
Resolved Caveats—Release 12.1(3)XP3
This section describes possibly unexpected behavior by software releases prior to Release 12.1(3)XP3 that have been resolved in Release 12.1(3)XP3 and above.
Miscellaneous
CSCds05811
If secondary IP addresses are configured on either an Ethernet or FastEthernet interface and the running-config is saved to NVRAM, when the router is reloaded the secondary IP addresses disappear from the configuration. This caveat is identical to the caveats: CSCdr51651, CSCdr72866, CSCdr72868, and CSCdr77724, as well as cases A445655, A519050, and A466616. The problem was originally found in Release 12.1(2)T. This caveat is fixed in Cisco IOS Release 12.1(3)XP3.
Open Caveats—Release 12.1(3)XP
This section describes possibly unexpected behavior by Release 12.1(3)XP. Only severity 1 through 3 caveats are included.
SNMP/MIBs
CSCdr72822
When using SNMP queries to retrieve information on the ADSL WIC, the serial number information and cardIfCardIndex is reported incorrectly by a Cisco 1700 series router.
CSCdr76180
SNMP queries can retrieve AAL5 MIB information, which is configured under a sub-interface (such as [atm { 0 | 1}]). However, SNMP queries to retrieve AAL5 MIB information do not return correct data from the main ATM interface (atm { 0 | 1 }).
Voice
CSCdr86655
The use of a hidden command is required to use an E&M interface with a PBX. If the remote end is also using a "y7" image, it must also be configured with the command voice rtp send-recv, regardless of which voice interface it uses.
CSCds31256
When configuring a connection trunk, do not precede the phone number with a "+". Use only numbers when specifying the digits to make the connection. Other characters may cause a crash when unconfiguring the connection trunk.
WAN
CSCdr72822
Cisco 1700 series routers incorrectly report serial number information when using SNMP queries to retrieve information on an ADSL-WIC.
CSCdr83635
A Cisco 1700 series router cannot achieve Systems Network Architecture (SNA) connectivity with Qualified Logical Link Control (QLLC) over remote source-route bridging (RSRB) with local acknowledgement. There is no known workaround.
CSCdr95335
Under some rare situations, an operational ADSL-WIC might generate the following debug message: "dslsar_tx_status_ind:," freeing more buffers than exist.
CSCdr98842
After reloading a Cisco 1700 series router with an ADSL-WIC, the router might intermittently generate the following error message: "ASSERTION FAILED: file ../les/if_dslsar_rcv.c, line 707." To work around this problem, reset the ATM interface(s) by using the command shutdown and then bring up the interface(s) again using the command no shutdown.
CSCds01047
If you enter the command shutdown on an ATM interface and reload a Cisco 1700 series router, subsequently using the command show running-config does not display the ATM interface as shut down. However, using the command show start correctly displays the ATM interface as shut down.
CSCds06523
Under certain undetermined conditions, an operational ADSL-WIC might occasionally produce the following debug message: "atm_parse_packet(ATM0):Invalid VC(32776) received, type=xxxx."
CSCds04829
If the show dsl interface command is entered multiple times back to back while the ADSL WIC is passing data, a transmitter section of the ADSL WIC goes to freeze and data can not be transmitted through the interface. To work around this problem, reset the ATM interface(s) by using
clear interface ATM {0 | 1}.Related Documentation
The following sections describe the documentation available for the Cisco 1700 series 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-ROM.
Use these release notes with the documents listed in the following sections:
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Release-Specific Documents
The following documents are specific to Release 12.1. They are located on Cisco.com and the Documentation CD-ROM.
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On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes
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Technical Documents: Product Bulletins
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As a supplement to the caveats listed in the "Caveats" section section in these release notes, see the Caveats for Cisco IOS Release 12.1 and Caveats for Cisco IOS Release 12.1 T documents, which contain caveats applicable to all platforms for all maintenance releases of IOS Releases 12.1 and 12.1 T.
On Cisco.com 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
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Platform-Specific Documents
Cisco 1720
These documents are available for the Cisco 1720 router on Cisco.com and the Documentation CD-ROM:
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On Cisco.com at:
Technical Documents: Documentation Home Page: Access Servers and Access Routers: Modular Access Routers: Cisco 1720 Router
On the Documentation CD-ROM at:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 1720 Router
Cisco 1750
These documents are available for the Cisco 1750 router on Cisco.com and the Documentation CD-ROM:
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On Cisco.com at:
Technical Documents: Documentation Home Page: Access Servers and Access Routers: Modular Access Routers: Cisco 1750 Router
On the Documentation CD-ROM at:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 1750 Router
Feature Modules
Feature modules describe new features supported by Release 12.1(3)XP4 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 Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in 12.1-Based Limited Lifetime Releases: New Features in 12.1X Releases
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in 12.1-Based Limited Lifetime Releases: New Features in 12.1X Releases
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 two types of 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.
The Cisco IOS software documentation set is available on Cisco.com and on the Documentation CD-ROM.
On Cisco.com 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 Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Release 12.1 Documentation Set
Table 6 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in both electronic and printed form.
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On Cisco.com 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
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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 Cisco.com 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 Cisco.com 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.com 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.com
Cisco continues to revolutionize how business is done on the Internet. Cisco.com 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.
Cisco.com's broad range of features and services helps customers and partners to streamline business processes and improve productivity. Through Cisco.com, 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 Cisco.com 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 Cisco.com in the following ways:
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You can e-mail questions about using Cisco.com 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:
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 Cisco.com log-in account, you can access the following URL, which contains links and tips on configuring your Cisco products:
http://www.cisco.com/public/technotes/tech_sw.html
This URL is subject to change without notice. If it changes, point your Web browser to Cisco.com, press Login, and click on this path: Technical Assistance Center: Technical Tips.
The following sections are provided from the Technical Tips page:
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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 95134-9883We appreciate and value your comments.
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