Table Of Contents
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.3(2)XF
Determining the Software Version
Upgrading to a New Software Release
New Software Features in Release 12.3(2)XF
H.323 Version 4-Enhanced Call Usage Reporting
H.323v4 Gateway Zone Prefix Registration Enhancements
SIP Transfer Using the Refer Method and Call Forwarding
Zero Touch Frame Relay Deployment
New Software Features in Release 12.3(2)T
Zero Touch Frame Relay Deployment
Resolved Caveats - Release 12.3(2)XF
Cisco IOS Software Documentation Set
Release 12.3 Documentation Set
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.3(2)XF
January 5, 2004
These release notes describe new features and significant software components for the Cisco 1700 series routers that support the Cisco IOS Release 12.3(2)T, up to and including Release 12.3(2)XF. 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 12.3T located on Cisco.com and the Documentation CD.
For a list of the software caveats that apply to Release 12.3(2)XF, see the "Caveats" section and Caveats for Cisco IOS Release 12.3(2)T. The online caveats document is updated for every maintenance release and is located on Cisco.com and the Documentation CD.
Contents
System Requirements
This section describes the system requirements for Release 12.3(2)XF and includes the following sections:
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Determining the Software Version
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Memory Requirements
Table 1 describes the memory requirements for the Cisco IOS feature sets supported by the Cisco IOS Release 12.3(2)XF on the Cisco 1700 series routers.
Hardware Supported
Cisco IOS Release 12.3(2)XF supports the following Cisco 1700 series routers:
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The Cisco 1701, Cisco 1710, Cisco 1711, Cisco 1712, Cisco 1720, and Cisco 1721routers run data images only. The Cisco 1751, Cisco 1751-V, and Cisco 1760 routers run data or data-and-voice images, providing digital and analog voice support. The Cisco 1711 and Cisco 1712 routers run select IPSec Triple Data Encryption Standard (3DES) images only (the Cisco 1700 IOS IP/ADSL/IPX/AT/IBM/FW/IDS PLUS IPSEC 3DES, the Cisco 1700 IOS IP/ADSL/FW/IDS PLUS IPSEC 3DES, the Cisco 1700 Advanced Security, and the Cisco 1700 IOS ADVANCED ENTERPRISE SERVICES images).
For descriptions of existing hardware features and supported modules, see the hardware installation guides, configuration and command reference guides, and additional documents specific to the Cisco 1700 series 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_mod/1700/index.htm
This URL is subject to change without notice. If it changes, point your web browser to Cisco.com, and click the following path:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 1700 Series Routers: <platform_name>
Determining the Software Version
To determine which version of Cisco IOS software is currently running on your Cisco 1700 series 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.
router> show versionCisco Internetwork Operating System SoftwareIOS (tm) C1700 Software (C1700-Y7-MZ), Version 12.3(2)XF, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)Synched to technology version 12.3(3.5)TUpgrading to a New Software Release
For general information about upgrading to a new software release, refer to the 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 12.3(2)XF supports the same feature sets as Releases 12.3 and 12.3(2)T, but Release 12.3(2)XF includes new features supported by the Cisco 1700 series routers.
Caution
Table 3 through Table 5 list the feature and feature sets supported in the Cisco IOS Release 12.3(2)XF.
The tables use the following conventions:
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Table 5, Part 2 Feature List by Cross-Platform Feature Set for Cisco 1701, 1710, 1711, 1712, 1721, 1751, 1751-V, and 1760 Routers
H.323 Version 4-Enhanced Call Usage Reporting
12.3(2)XF
No
No
Yes
H.323v4 Gateway Zone Prefix Registration Enhancements
12.3(2)XF
No
No
Yes
SIP Transfer Using the Refer Method and Call Forwarding
12.3(2)XF
No
No
Yes
Zero Touch Frame Relay Deployment
12.3(2)XF
Yes
Yes
Yes
G.Clear Codec
12.3(2)XF
No
No
Yes
Configurable DHCP Client
12.3(2)XF
Yes
Yes
Yes
1 This image is supported only on Cisco 1751, 1751-V, and 1760 routers.
New and Changed Information
The following sections list the new software features supported by the Cisco 1700 series routers for Release 12.3(2)XF.
New Software Features in Release 12.3(2)XF
The following sections describe the new software features supported by the Cisco 1700 series routers for Release 12.3(2)XF.
H.323 Version 4-Enhanced Call Usage Reporting
The H.323 Version 4-Enhanced Call Usage Reporting feature takes advantage of the H.323 version 4 enhancements and provides standards-based call-usage reporting to the gatekeeper from an H.323 gateway. This information is used by the gatekeeper to generate call detail records. Until now, this information was provided in a proprietary billing token.
H.323v4 Gateway Zone Prefix Registration Enhancements
The H.323 Version 4 (H.323v4) Gateway Zone Prefix Registration Enhancements feature provides support for two capabilities included in H.323 version 4:
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Additive registration allows a gateway to add to or modify a list of aliases contained in a previous registration without first unregistering from the gatekeeper.
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Dynamic zone prefix registration allows a gateway to register actual public switched telephone network (PSTN) destinations served by the gateway with its gatekeeper.
For more details, refer to the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t15/ftgwzpre.htm
SIP Transfer Using the Refer Method and Call Forwarding
The call transfer capabilities using the SIP Refer method supplement the Bye and Also methods already implemented on Cisco IOS SIP gateways.
For more details, refer to the following URL:
Zero Touch Frame Relay Deployment
The Zero Touch Frame Relay Deployment feature automates the deployment of Cisco customer premises equipment (CPE) using Frame Relay as access technology. Service providers and large enterprise customers who deploy Frame Relay can ship CPE to their subscriber or branch offices with generic bootstrap configuration.
Once powered up, the CPE goes through following steps to complete Zero Touch Frame Relay Deployment:
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
a.
Step 7
G.Clear Codec
The G.Clear codec guarantees bit integrity when transferring a digital signal level 0 (DS-0) through a gateway server, supports the transporting of nonvoice circuit data sessions through a Voice over IP (VoIP) network, and enables the VoIP networks to transport ISDN and switched 56 circuit-switched data calls. With the availability of G.Clear codec, ISDN data calls that do not require bonding can be supported.
In a transit application, because it is possible to have a mix of voice and data calls, a lack of support for G.Clear limits the solution to voice-only calls. The end-user application is in charge of handling packet loss and error recovery. This packet loss management precludes the use of clear channel with some applications unless the IP network is carefully engineered.
In an Media Gateway Control Protocol (MGCP) environment, the voice gateway backhauls the public switched telephony network (PSTN) signaling channel to the call agent. The call agent examines the bearer capability and determines when a G.Clear call should be established.
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Configurable DHCP Client
The Configurable Dynamic Host Configuration Protocol (DHCP) Client feature enables additional DHCP options to be configured in the Cisco IOS software to offer equivalent functionality to Cisco 340 and Cisco 350 Series Access Points. The new available DCHP options are as follows:
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Allows the user to enter a unique hexadecimal value or a unique null terminated ASCII string. An example for the hexadecimal value is 0x574D00464B3031, which is ?WM<00>GK01?, where <00> is the ASCII null character. An example for the unique null terminated ASCII string is "WMUNKNOWN". The type field of the client identifier option will be set to 0x0 in this case.
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Allows the user to configure the Vendor Class Identifier string to use in DHCP interactions.
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Allows the user to configure the suggested lease time to be included as the Lease Time Option in DHCP interaction.
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Allows the user to tell the system what options it should not ask for when requesting a DHCP address.
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This option specifies the name of the client. The name may or may not be qualified with the local domain.
For more details, refer to the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123t/123t4/gtdhcpcf.htm
New Software Features in Release 12.3(2)T
For information regarding the features supported in the Cisco IOS Release 12.3(2)T, refer to the Cross-Platform Release Notes and New Feature Documentation links at the following location on Cisco.com:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123relnt/xprn123/index.htm
This URL is subject to change without notice. If it changes, point your web browser to Cisco.com, and click the following path:
Service & Support: Technical Documents: Cisco IOS Software: Release 12.3: Release Notes: Cross-Platform Release Notes (Cisco IOS Release 12.3(2)T)
Limitations and Restrictions
The following sections list the limitations and restrictions that apply for the Cisco IOS release 12.3(2)XF.
Zero Touch Frame Relay Deployment
The Zero Touch Frame Relay Deployment feature requires the use of IE2100 server.
Caveats
Caveats describe unexpected behavior or defects in the 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 Cisco IOS Release 12.3(2)T are also in Release 12.3(2)XF. For information on caveats in Cisco IOS Release 12.3(2)T, refer to the Caveats for Cisco IOS Release 12.3(2)T document. This document lists severity 1 and 2 caveats; the documents are located on Cisco.com and the Documentation CD.
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Resolved Caveats - Release 12.3(2)XF
This section documents possible unexpected behavior by Cisco IOS Release 12.3(2)XF and describes only severity 1 and 2 caveats and selected severity 3 caveats.
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Hold timer not invoked with multiple hold requests.
Sometimes when a call is resumed, the hold timer is not stopped, and the call is terminated when the timer expires.
Workaround
None.
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TCP checks should verify ack sequence number.
A vulnerability in the Transmission Control Protocol (TCP) specification (RFC793) has been discovered by an external researcher. The successful exploitation enables an adversary to reset any established TCP connection in a much shorter time than was previously discussed publicly. Depending on the application, the connection may get automatically re-established. In other cases, a user will have to repeat the action (for example, open a new Telnet or SSH session). Depending upon the attacked protocol, a successful attack may have additional consequences beyond terminated connection which must be considered. This attack vector is only applicable to the sessions which are terminating on a device (such as a router, switch, or computer) and not to the sessions that are only passing through the device (for example, transit traffic that is being routed by a router). In addition, this attack vector does not directly compromise data integrity or confidentiality.
All Cisco products which contain TCP stack are susceptible to this vulnerability.
This advisory is available at http://www.cisco.com/warp/public/707/cisco-sa-20040420-tcp-ios.shtml, and it describes this vulnerability as it applies to Cisco products that run Cisco IOS® software.
A companion advisory that describes this vulnerability for products that do not run Cisco IOS software is available at http://www.cisco.com/warp/public/707/cisco-sa-20040420-tcp-nonios.shtml.
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.
Use these release notes with the documents listed in the following sections:
Release-Specific Documents
The following documents are specific to Release 12.3 and apply to Release 12.3(2)XF. They are located on Cisco.com and the Documentation CD (under the heading Service & Support):
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Technical Documents: Cisco IOS Software: Release 12.3: Release Notes: Cisco IOS Release 12.3(2)T
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Technical Documents: Product Bulletins
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Technical Documents: Cisco IOS Software: Release 12.3: Caveats
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Platform-Specific Documents
Hardware installation guides, configuration and command reference guides, and additional documents specific to the Cisco 1700 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_mod/1700/index.htm
This URL is subject to change without notice. If it changes, point your web browser to Cisco.com, and click the following path:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 1700 Series Routers: <platform_name>
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:
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 one or more configuration guides and one or more corresponding command references. Chapters in a configuration guide describe protocols, configuration tasks, and 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:
Products & Services: IOS Software: Cisco IOS Software Releases 12.3 Mainline: Technical Documentation: Master Indices
On the Documentation CD-ROM at:
Product Documentation: Cisco IOS Software: Cisco IOS Release 12.3: Configuration Guides and Command References
Release 12.3 Documentation Set
Table 6 describes the contents of the Cisco IOS Release 12.3 software documentation set, which is available in both electronic and printed form.
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Service and Support
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:
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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:
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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 © 2004, Cisco Systems, Inc. All rights reserved.
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