Table Of Contents
Release Notes for Cisco 1750 Series Routers for Cisco IOS Release 12.1(5)XM
Determining the Software Release
Upgrading to a New Software Release
New Software Features in Cisco IOS Releases 12.1(5)XM and 12.1(5)XM1
Caveat CSCdr91706 and IOS HTTP Vulnerability
Fan Operation in Cisco 1700 Series Routers
Flash Defaults to Flash:1 on Multipartition Flash
Resolved Caveats - Release 12.1(5)XM7
Caveats for Release 12.1(5)XM1
Cisco IOS Software Documentation Set
Cisco IOS Release 12.1 Documentation Set
Obtaining Technical Assistance
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
Release Notes for Cisco 1750 Series Routers for Cisco IOS Release 12.1(5)XM
February 13, 2002
These release notes for Cisco 1750 routers describe the enhancements provided in Cisco IOS Release 12.1(5)XM7. These release notes are updated as needed. Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.1 on Cisco.com and the Documentation CD-ROM.
All caveats in Release 12.1(5)T are also in Release 12.1(5)XM7. For a list of the software caveats that apply to Cisco IOS Release 12.1 T, see Caveats for Cisco IOS Release 12.1 T that accompanies these release notes. The caveats document is updated for every maintenance release and is located on Cisco.com and the Documentation CD-ROM.
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You can find the most current Cisco IOS documentation on Cisco.com. These electronic documents might contain updates and modifications made after the hardcopy documents were printed.
Contents
These release notes describe the following topics:
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Early Deployment Releases
These release notes describe Cisco 1750 routers for Cisco IOS Release 12.1(5)XM7, which is an early deployment (ED) release based on Cisco IOS Release 12.1. Early deployment releases contain fixes for software caveats and support for new Cisco hardware and software features.
The following list shows the sequence of recent early deployment releases for Cisco 1750 routers:
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For more information, see the "Platform-Specific Documents" section about accessing related release note documents.
System Requirements
This section describes the system requirements for Cisco IOS Release 12.1(5)XM7:
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Memory Requirements
Hardware Supported
Cisco IOS Release 12.1(5)XM7 supports the Cisco 1750, which runs data and data-plus-voice images. For detailed descriptions of the new hardware features, see "New and Changed Information" section.
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 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 the Software Release
To determine the version of Cisco IOS software running on your Cisco 1750 router, log in to the router and enter the show version EXEC command:
router> show versionCisco Internetwork Operating System SoftwareIOS (tm) Software (c1700-sv3y56i-mz), Version 12.1(5)XM7, 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. Cisco IOS Release 12.1(5)XM7 supports the same feature sets as Cisco IOS Release 12.1 T, but Release 12.1(5)XM7 can include new features supported by Cisco 1750 routers.
Caution
Table 2, Table 3, and Table 4 list the features and feature sets supported by the Cisco 1750 routers in Cisco IOS Release 12.1(5)XM7. All three tables use the following conventions:
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New and Changed Information
New Software Features in Cisco IOS Releases 12.1(5)XM and 12.1(5)XM1
The following new software features are supported by Cisco 1750 routers for Release 12.1(5)XM. No new software features are supported by Cisco 1750 routers for Release 12.1(5)XM7.
MGCP CAS PBX and AAL2 PVC
The Media Gateway Control Protocol Channel Associated Signaling (MGCP CAS) PBX and ATM Adaptation Layer 2 Permanent Virtual Circuit (AAL2 PVC) feature set extends the Simple Gateway Control Protocol (SGCP) Channel Associated Signaling (CAS) and AAL2 support onto the merged SGCP/MGCP software base to enable various service provider solutions. Following is a list of the features in the feature set:
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Digital CAS (E&M) interfaces are supported in addition to the analog (FXO, FXS, and E&M) interfaces.
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MGCP 0.1 is now expanded to support CAS packages that handle CAS PBX and Feature Group D CAS functions, including Barge-In, Busy Line Verify, and 911 capabilities on the Trunking Gateway (TGW).
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The earlier version of the merged SGCP/MGCP stack supported only Voice over IP. The standalone SGCP software supported both VoIP and Voice over AAL2. The merged stack supports both VoIP and VoAAL2.
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The CAS PBX gateway features include CAS PBX trunks, digit maps, CAS events, and quarantine buffer software. These features were available in the existing standalone SGCP software; now they are supported in the merged stack.
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The essential difference for current SGCP users is that support for the SGCP application has been replaced with the MGCP application. The MGCP application supports both SGCP commands and MGCP commands, permitting access to a larger feature set than with the SGCP application alone. The MGCP CAS PBX and AAL2 PVC software assumes the MGCP mode as the default environment. This allows the gateway to recognize both MGCP and SGCP messages sent by the Call Agent. However, you can specify SGCP mode for certain messages to be sent by the gateway.
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Limitations and Restrictions
MIBs
Old Cisco Management Information Bases (MIBs) will be replaced in a future release. Currently, OLD-CISCO-* MIBs are being converted into more scalable MIBs—without affecting existing Cisco IOS products or NMS applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 5.
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Important Notes
The following sections contain important notes about Cisco IOS Release 12.1(5)XM7 that can apply to Cisco 1750 routers.
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.
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:).
Fan Operation in Cisco 1700 Series Routers
The fans in the Cisco 1700 series routers stay off until thermally activated (45°C/115°F).
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.
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.
All caveats in Release 12.1(5)T are also in Release 12.1(5)XM7. For information on caveats in Cisco IOS Release 12.1(5)T, refer to the Caveats for Cisco IOS Release 12.1 T document. For information on caveats in Cisco IOS Release 12.1, refer to the Caveats for Cisco IOS Release 12.1 document. These publications, located on Cisco.com and the Documentation CD-ROM, list severity 1 and 2 caveats, and select severity 3 caveats.
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Resolved Caveats - Release 12.1(5)XM7
This section describes unexpected behavior that is fixed in Release 12.1(5)XM7.
Management
CSCdw65903
An error can occur with management protocol processing. Please use the following URL for further information:
http://www.cisco.com/pcgi-bin/bugtool/onebug.pl?bugid=CSCdw65903
Caveats for Release 12.1(5)XM1
This section describes possibly unexpected behavior by Release12.1(5)XM1, specific to the Cisco 1750 router only. The following caveats are severity 3.
CSCdr26084
From the perspective of the Cisco 1750 router command line interface (CLI), the format used to describe the slot and port is <slot>/<port>. However, after executing the command show mgcp endpoint, the Cisco 1750 router might display the output in the format <slot>/<subinterface>/<port>, such as 0/0/1 for port 0/1. The 0 digit for the <slot> does not represent hardware; it is a phantom number added by Cisco 1750 internal code because there is no concept of a subinterface for Cisco 1750 routers. This syntax structure matches that of some other networking equipment requiring unique specifications for all three hardware aspects: the slot number, the sub-unit number, and the port number. On the Cisco 1750 router, the <subinterface> is actually the slot number. The output format of the command show mgcp endpoint thus provides information about how to configure the command call agent.
CSCdr39864
The Cisco 1750 router is a Residential Gateway (RGW) and supports MGCP on FXS ports only, therefore, do not configure MGCP on FXO or E&M ports.
Related Documentation
The following sections describe the documentation available for Cisco 1750 routers. 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 these documents:
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Release-Specific Documents
The following documents are specific to Cisco IOS Release 12.1 and 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
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
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See Caveats for Cisco IOS Release 12.1 and Caveats for Cisco IOS Release 12.1 T, which contain caveats applicable to all platforms for all maintenance releases of Cisco IOS Release 12.1 and Release 12.1 T:
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Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats
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Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats
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Platform-Specific Documents
These individual and groups of 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: Cisco Product Documentation: 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 Cisco IOS Release 12.1 T and above, 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.
The online-only feature module specific to Release 12.1(5)XM7 is located 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 12.1 X Releases: New Features in Release 12.1(5)XM: New Features in Release 12.1(5)XM: MGCP CAS PBX and AAL2 PVC
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 12.1 X Releases: New Features in Release 12.1(5)XM: New Features in Release 12.1(5)XM: MGCP CAS PBX and AAL2 PVC
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:
http://www.cisco.com/go/fn
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 the printed versions.
Documentation Modules
Each module in the Cisco IOS documentation set consists of two 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.
On Cisco.com and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set:
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Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
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Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Cisco IOS Release 12.1 Documentation Set
Table 6 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form ordered.
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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/pcgi-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.
