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Table Of Contents
Release Notes for Catalyst 4000 Access Gateway Module for Cisco IOS Release 12.1 XI
Determining the Software Version
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI8
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI7
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI6
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI5
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI4
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI3
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI2
New Hardware Features in Cisco IOS Release 12.1(3a)XI
New Software Features in Cisco IOS Release 12.1(3a)XI
New Hardware Features in Cisco IOS Release 12.1(3a)XI
New Software Features in Cisco IOS Release 12.1(3a)XI
Tighten Screws on VICs and WICs
Need to Support 56 Kbps Operation for Slot 3 WIC
Open Caveats—Release 12.1(3a)XI8
Resolved Caveats—Release 12.1(3a)XI8
Open and Resolved Caveats—Release 12.1(3a)XI7
Open and Resolved Caveats—Release 12.1(3a)XI6
Open and Resolved Caveats—Release 12.1(3a)XI5
Open and Resolved Caveats—Release 12.1(3a)XI4
Open and Resolved Caveats—Release 12.1(3a)XI3
Open Caveats—Cisco IOS Release 12.1(3a)XI2
Open Caveats—Cisco IOS Release 12.1(3)XI1
Closed Caveats—Cisco IOS Release 12.1(3)XI1
Open Caveats—Cisco IOS Release 12.1(3a)XI
Resolved Caveats—Release 12.1(3a)XI
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 Catalyst 4000 Access Gateway Module for Cisco IOS Release 12.1 XI
February 12, 2002
Note
You can find the most current Cisco IOS documentation on Cisco Connection Online (CCO). These electronic documents may contain updates and modifications made after the hardcopy documents were printed.
These release notes for the Catalyst 4000 Access Gateway module describe the enhancements provided in Cisco IOS Release 12.1(3)XI8. These release notes are updated as needed.
For a list of the software caveats that apply to Cisco IOS Release 12.1(3)XI8, see the "Caveats" section and Caveats for Cisco IOS Release 12.1 T. The caveats document is updated for every maintenance release and is also located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.1 located on CCO and the Documentation CD-ROM.
Contents
These release notes describe the following topics:
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Introduction
The Cisco Catalyst 4000 Access Gateway module adds voice interfaces, WAN interfaces and DSP farm services to the Cisco Catalyst 4000 family switch and enables it to become an integrated voice and data solution for branch and remote offices and small to medium businesses that support from 50 to 240 users. The module provides the following interfaces:
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The Cisco Catalyst 4000 Access Gateway Module supports H.323 for the telephony gateway functions and the Skinny Client Control Protocol (SCCP) for the DSP farm services. The modules operates as a peer device in Voice over IP (VoIP) applications or as a slave device under the control of Cisco Call Manager in the Cisco AVVID IP Telephony environment.
System Requirements
This section describes the system requirements for Release 12.1(3)XI8:
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Memory Recommendations
Table 1 describes the minimum memory recommendations for the Access Gateway module.
Hardware Supported
Cisco IOS Release 12.1(3a)XI8 supports the Catalyst 4000 Access Gateway module.
Determining the Software Version
To determine the version of Cisco IOS software running on an Access Gateway module, log in to the device and enter the show version EXEC command:
router> show versionCisco Internetwork Operating System SoftwareIOS (tm) c4gwy Software (c4gwy-io3s-mz), Version 12.1(3)XI8, RELEASE SOFTWAREFeature Set Tables
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(3)XI8 supports the same feature sets as Cisco IOS Release 12.1, but Cisco IOS Release 12.1(3)XI8 can include new features supported by the Access Gateway module.
Table 2 describes the supported feature sets.
Caution
New and Changed Information
The following sections list the new hardware and software features Cisco IOS Release 12.1(3a)XI8.
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI8
Cisco IOS Release 12.1(3a)XI8 does not support the Cisco Catalyst 4000.
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI7
Cisco IOS Release 12.1(3a)XI7 does not support the Cisco Catalyst 4000.
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI6
Cisco IOS Release 12.1(3a)XI6 does not support the Cisco Catalyst 4000.
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI5
Cisco IOS Release 12.1(3a)XI5 does not support the Cisco Catalyst 4000.
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI4
Cisco IOS Release 12.1(3a)XI4 does not support the Cisco Catalyst 4000.
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI3
Cisco IOS Release 12.1(3a)XI3 does not support the Cisco Catalyst 4000.
New Hardware and Software Features in Cisco IOS Release 12.1(3a)XI2
Cisco IOS Release 12.1(3a)XI2 does not support the Cisco Catalyst 4000.
New Hardware Features in Cisco IOS Release 12.1(3a)XI
Cisco IOS Release 12.1(3a)XI supports the Cisco Catalyst 4000 Access Gateway module.
New Software Features in Cisco IOS Release 12.1(3a)XI
There are two new software features supported by the Catalyst 4000 Access Gateway module for Cisco IOS Release 12.1(3a)XI. Under the control of Cisco CallManager, the Access Gateway module can support conferencing and transcoding services.
The conferencing service allows an external Cisco CallManager to use the DSP farm to mix participants into multiple conferences. The conferencing service adds G.711 voice streams to form unicast conferences.
The Cisco CallManager controls the conference with Skinny Client Control Protocol (SCCP).
The conferencing service supports:
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Partitioning the 24 channels into a set of conferences is done at the Cisco CallManager.
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The transcoding service allows an external Cisco CallManager to use the DSP farm to compress or decompress WAN packets of voice streams between G.723.1 or G.729a to or from G.711. G.711 is the uncompressed format for LANs.
The transcoding service supports:
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New Hardware Features in Cisco IOS Release 12.1(3a)XI
Cisco IOS Release 12.1(3a)XI supports the Cisco Catalyst 4000 Access Gateway module.
New Software Features in Cisco IOS Release 12.1(3a)XI
There are no new software features supported by the Catalyst 4000 Access Gateway module for Cisco IOS Release 12.1(3a)XI.
Important Notes
The following sections contain important notes about Cisco IOS Release 12.1(3)XI8 that can apply to the Catalyst 4000 Access Gateway module.
Tighten Screws on VICs and WICs
You must tighten the screws on the VICs and WICs mounted on the Access Gateway module. If the screws are not properly tightened, the VIC or WIC may malfunction.
TDM Clocking
The TDM clock reference on the Access Gateway module can be derived from one of seven sources. These are the free running on-board clock and two recovered clock sources from each VIC slot that contains an E1/T1 card.
The default reference is the on-board clock. The frame-clock-select command can be used to select one of the E1/T1 ports as the primary reference. This command can also be used to select up to 3 prioritized backups that can be used if the primary clock fails. Switch over to a backup source is non-revertive, the system does not switch back to a higher priority clock if it recovers after a failure.
The command has the following syntax:
[no] frame-clock-select priority E1/T1 slot/portThe clock source with priority 1 is the primary reference and the clock with priority 4 is the lowest priority backup.
The clock reference selection using the frame-clock-select command is independent of the clock selection between line or internal on an E1/T1 controller. Framing and CRC errors due to clock slips may be observed on E1/T1 interfaces if the on-board clock is used as the reference.
Need to Support 56 Kbps Operation for Slot 3 WIC
The 8260 Rev1A device, which is being used in the Access Gateway module hardware, has a defect that can cause data corruption when configuring the MCC SI Ram for 2 entries (7 bits forming the 56kbps channel and 1 bit being discarded).
As a workaround, 3 SI RAM entries would have to be used, but the Access Gateway module does not have enough room available. Therefore, only 64kbps channels will be supported on the Access Gateway module.
If absolutely required, we could implement this feature in Access Gateway module slots 1 and 2 using the SCCs and limit it to 2 channels or super-channels per Access Gateway module slot. This requires more design work and will not be addressed unless really needed.
Customers that need 56kbps should use the WIC-56K4 WIC.
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.
This section contains only open and resolved caveats for this current Cisco IOS maintenance release.
All caveats in Cisco IOS Release 12.1(3) and Cisco IOS Release 12.1(3)T are in Cisco IOS Release 12.1(a)XI8.
For information on caveats in Cisco IOS Release 12.1, see Caveats for Cisco IOS Release 12.1, which lists severity 1 and 2 caveats and is located on CCO and the Documentation CD-ROM.
Open Caveats—Release 12.1(3a)XI8
There are no open caveats specific to Cisco IOS Release 12.1(3a)XI8 that require documentation in the release notes.
Resolved Caveats—Release 12.1(3a)XI8
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(3a)XI8. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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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 and Resolved Caveats—Release 12.1(3a)XI7
Cisco IOS Release 12.1(3a)XI7 does not support the Cisco Catalyst 4000.
Open and Resolved Caveats—Release 12.1(3a)XI6
Cisco IOS Release 12.1(3a)XI6 does not support the Cisco Catalyst 4000.
Open and Resolved Caveats—Release 12.1(3a)XI5
Cisco IOS Release 12.1(3a)XI5 does not support the Cisco Catalyst 4000.
Open and Resolved Caveats—Release 12.1(3a)XI4
Cisco IOS Release 12.1(3a)XI5 does not support the Cisco Catalyst 4000.
Open and Resolved Caveats—Release 12.1(3a)XI3
Cisco IOS Release 12.1(3a)XI3 does not support the Cisco Catalyst 4000.
Open Caveats—Cisco IOS Release 12.1(3a)XI2
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Basic FAX is not working in IP Telephony mode when using the FXS/G.711 interface.
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Before erasing a file from the flash file system, all telnet sessions to the Access Gateway (except the one from where the erase command will be executed) must be closed. Otherwise a system crash might occur.
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Fast switching is disabled on serial interfaces when IP RTP header compression is configured.
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The show voicecard conference and show voicecard transcode commands can be inaccurate on extremely busy networks.
During periods of heavy usage, when calls are repeatedly connected and torn down, problems are encountered if you perform the show commands for transcoding or conferencing.The conference bridge or transcoder resource might have been released and then reused.The results are an incomplete display of the actual resource.
There are also times when the console gets stuck in a loop when trying to track an invalid resource.
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Caller ID is not supported on analog and digital ports (T1CAS and Analog FCS) in this release.
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When the conference bridge resource limit of 24 conferees is reached, the twenty-fifth conferee causes the conference originator to be dropped. The conference originator is also dropped when the maximum users on a conference bridge is extended beyond six.
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In IP Telephony mode, the Access Gateway module only supports two codecs: G711u and G711a. The default codec appears as G729r8. The codec needs to be set to G.711 using the command line interface.
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Hook-flash does not work properly.
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The Access Gateway module does not support fxs-ground-start signalling in ds0-group command. See the following example:
Gateway(config-controller)#ds0-group 0 time 1 type ?e&m-delay-dial E & M Delay Diale&m-immediate-start E & M Immediate Starte&m-wink-start E & M Wink Startext-sig External Signalingfxo-ground-start FXO Ground Startfxo-loop-start FXO Loop Startfxs-loop-start FXS Loop StartOpen Caveats—Cisco IOS Release 12.1(3)XI1
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Fast switching is disabled on serial interfaces when IP RTP header compression is configured.
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The show voicecard conference and show voicecard transcode commands can be inaccurate on extremely busy networks.
During periods of heavy usage, when calls are repeatedly connected and torn down, problems are encountered if you perform the show commands for transcoding or conferencing.The conference bridge or transcoder resource might have been released and then reused.The results are an incomplete display of the actual resource.
There are also times when the console gets stuck in a loop when trying to track an invalid resource.
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Caller ID is not supported on analog and digital ports (T1CAS and Analog FCS) in this release.
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When the conference bridge resource limit of 24 conferees is reached, the twenty-fifth conferee causes the conference originator to be dropped. The conference originator is also dropped when the maxium users on a conference bridge is extended beyond six.
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In IP Telephony mode, the Access Gateway module only supports two codecs: G711u and G711a. The default codec appears as G729r8. The codec needs to be set to G.711 using the command line interface.
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Hook-flash does not work properly.
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During normal IP gateway operation, T1 CAS and analog FXS work fine. But if a VoIP call is placed over the network and requires hardware transcoding, the voice interface stops working. Symptons are no dialtone from Chopin, signaling still goes through, but no talk path. This happens as long as one hardware transcoded call is up. This condition disappears once the transcoded call is released.
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The Access Gateway module does not support fxs-ground-start signalling in ds0-group command. See the following example:
Gateway(config-controller)#ds0-group 0 time 1 type ?e&m-delay-dial E & M Delay Diale&m-immediate-start E & M Immediate Starte&m-wink-start E & M Wink Startext-sig External Signalingfxo-ground-start FXO Ground Startfxo-loop-start FXO Loop Startfxs-loop-start FXS Loop StartClosed Caveats—Cisco IOS Release 12.1(3)XI1
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Need to support 56kb/s operation for slot 3 wic.
Reason for this action:
The 8260 Rev1A device (which is being used in the FCS Access Gateway module hardware) has a defect that can cause data corruption when configuring the MCC SI Ram for 2 entries (7 bits forming the 56kbps channel and 1 bitbeing discarded). As a workaround, 3 SI RAM entries would have to be used, but the Access Gateway module does not have enough room available. Therefore, only 64kbps channels will be supported on the Access Gateway module.
If absolutely required, we could implement this feature in Access Gateway module slots 1 and 2 using the SCCs and limit it to 2 channels or super-channels per Access Gateway module slot. This requires more design work and will not be addressed unless really needed.
Customers needing 56kbps should use the WIC-56K4 WIC.
Open Caveats—Cisco IOS Release 12.1(3a)XI
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There are 3 VIC/WIC cards installed on the Access Gateway module, but SNMP query for cardTable returns with no value. CiscoView needs the information to manage the VIC/WIC cards on the Access Gateway module.
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When running LFI on a WAN and a line is oversubscribed, when there is a high level of voice traffic, the line protocol may go down. If RTP header compression is enabled, the line protocol will stay up.
Resolved Caveats—Release 12.1(3a)XI
There are no resolved caveats specific to Cisco IOS Release 12.1(3a)XI that require documentation in the release notes.
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Related Documentation
The following sections describe the documentation available for the Cisco Catalyst 4000 family switches. 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 CCO 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 or support Cisco IOS Release 12.1(3a)XI8 and are located on CCO and the Documentation CD-ROM:
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On CCO 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
Platform-Specific Documents
These documents are available for the Cisco Catalyst 4000 family switches on CCO and the Documentation CD-ROM:
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On CCO at:
Technical Documents: Documentation Home Page: Multilayer LAN Switches: Cisco 4000 Family Switches
On the Documentation CD-ROM at:
Cisco Product Documentation: Multilayer LAN Switches: Cisco 4000 Family Switches
Feature Modules
Feature modules describe new features supported by Cisco IOS Release 12.1 T, 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 CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in Release 12.1T
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in Release 12.1T
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, 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.
On CCO and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.
On CCO 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 IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Release 12.1 Documentation Set
Table 3 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form upon request.
Note
On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1
On the Documentation CD-ROM:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1
Table 3
Cisco IOS Release 12.1 Documentation Set
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 CCO 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 CCO 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 Connection Online (CCO) 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 docs, or by sending mail to Cisco.
Cisco Connection Online
Cisco continues to revolutionize how business is done on the Internet. Cisco Connection Online 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.
CCO's broad range of features and services helps customers and partners to streamline business processes and improve productivity. Through CCO, 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 CCO 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 CCO in the following ways:
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You can e-mail questions about using CCO 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 CCO login account, you can access the following URL, which contains links and tips on configuring your Cisco products:
http://www.cisco.com/kobayashi/technotes/serv_tips.shtml
This URL is subject to change without notice. If it changes, point your Web browser to CCO and click on this path: Technical Assistance Center: Technical Tips. (You must have a CCO account to access this link.)
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.
