Table Of Contents
Release Notes for Cisco 3810 for Cisco IOS Release 12.2 XG
Determining the Software Version
Upgrading to a New Software Release
New Hardware and Software Features in Cisco IOS Release 12.2(2) XG1
New Hardware Features in Cisco IOS Release 12.2(2) XG
New Software Features in Cisco IOS Release 12.2(2) XG
Survivable Remote Site Telephony
Deprecated and Replacement MIBs
Changes to output attenuation Command
Caveats for Cisco IOS Release 12.2(2) XG
Open Caveats—Cisco IOS Release 12.2(2) XG1
Resolved Caveats—Cisco IOS Release 12.2(2) XG1
Open Caveats—Cisco IOS Release 12.2(2) XG
Resolved Caveats—Cisco IOS Release 12.2(2) XG
Cisco IOS Software Documentation Set
Cisco IOS Release 12.2 Documentation Set Contents
Obtaining Technical Assistance
Contacting TAC by Using the Cisco TAC Website
Release Notes for Cisco 3810 for Cisco IOS Release 12.2 XG
June 12, 2002
Cisco IOS Release 12.2(2) XG1
78-13504-01 Rev. C0
Note The last release of Cisco IOS Release12.2 XG is Cisco IOS Release 12.2(2) XG1. The migration path for customers who need bug fixes for Cisco IOS Release12.2(2) XG1 features is Cisco IOS Release 12.2(8) T. Cisco IOS Release 12.2(8) T release has the complete feature content of Cisco IOS Release 12.2(2) XG1 and will eventually reach general deployment (GD).
These release notes for the Cisco 3810 support Cisco IOS Release 12.2(2) XG1. These release notes are updated as needed.
For a list of the software caveats that apply to Cisco IOS Release 12.2(2) XG, see the "Caveats for Cisco IOS Release 12.2(2) XG" section and Caveats for Cisco IOS Release 12.2 T. This caveats document is updated for every maintenance release and is also located on Cisco.com and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.2 T located on Cisco.com and the Documentation CD-ROM.
Contents
These release notes describe the following topics:
•MIBs
•Caveats for Cisco IOS Release 12.2(2) XG
•Obtaining Technical Assistance
Introduction
The Cisco MC3810 multiservice access concentrator is fully supported by Cisco IOS software for multiprotocol routing, bridging, and Systems Network Architecture (SNA). As part of an enterprise backbone or as a CPE device to serve provider-managed network services, the Cisco MC3810 reduces operating costs and complexity, and increases network throughput and performance.
The Cisco MC3810 provides a complete file system for software images, message files, and reports. The standard Flash memory size is 8 MB. A 16-MB upgrade option is available. The 16-MB version can hold two code images simultaneously for fail-safe upgrades.
Management and configuration of the Cisco MC3810 should be familiar to the Cisco IOS user and compatible with existing management systems. As such, it provides a superset of the Cisco command-line interface (CLI). The Cisco MC3810 can be managed by standard Cisco management platforms and facilities such as CiscoView and the native remote login facilities provided by Telnet and rlogin. Three types of configuration interfaces are provided as follows:
•Cisco CLI
•HTTP-based configuration server
•SNMP-based MIB
The HTTP-based interface allows configuration from any web browser such as Netscape Navigator or Microsoft Explorer. The Simple Network Management Protocol (SNMP) MIB allows management of the Cisco MC3810 from SNMP managers (for example, HP OpenView).
For information on new features and Cisco IOS commands supported by Cisco IOS Release 12.2(2) XG1, see the "New and Changed Information" section and the "Related Documentation" section.
System Requirements
This section describes the system requirements for Cisco IOS Release 12.2 XG and includes the following sections:
•Determining the Software Version
•Upgrading to a New Software Release
Memory Recommendations
Supported Hardware
Cisco IOS Release 12.2(2) XG1 supports the Cisco MC3810 multiservice access concentrator. The Cisco MC3810 base chassis is a semifixed configuration router that can be customized for a specific application at the factory or in the field by a qualified technician. The base chassis includes the following components:
•One fixed Ethernet LAN port
•A console port and an auxiliary port
•Two synchronous serial ports
•Five mounting areas for functional modules that support additional capabilities
•AC, DC, or redundant power supply option
Cisco MC3810 series concentrators are supplied in various standard hardware configurations. These concentrators are equipped with different sets of functional modules to provide specific functional capability. Many configurations are possible, but they are all variations of the basic categories described in Table 2. Supported hardware is shown in Table 3. The chassis opening for any mounting area that is not equipped with a functional module is closed off with a removable cover plate.
For detailed descriptions of the new hardware features, see the "New and Changed Information" section.
Table 2 Cisco MC3810 Series Standard Hardware Categories
Category Service Types Supported Required Modules Optional Modules Base ChassisBase chassis services1
None
Optional modules can be added to create other chassis variations
Analog Voice ChassisBase chassis services1 plus compressed analog voice connections to telephone, fax, central office, analog PBX
AVM (analog voice module) with 1 to 6 APMs (analog personality modules)
VCM3 or VCM6 or
HCM2 or HCM6
(only one voice compression module)MFT2 to support a channelized T1 or E1 trunk
MFT2 and VDM3 to support video codec dialing
Digital Voice ChassisBase chassis services1 plus compressed digital voice through digital PBX
DVM
VCM3 or VCM6 or
HCM2 or HCM6
(one or two voice compression modules)MFT2 to support a channelized T1 or E1 trunk
MFT2 and VDM3 to support video codec dialing
BRI Voice ChassisBase chassis services1 plus compressed digital voice through PINX
BVM and MFT1
VCM3 or VCM6 or
HCM2 or HCM6
(only one voice compression module)MFT2 to support a channelized T1 or E1 trunk
MFT2 and VDM3 to support video codec dialing
T1/E1 Trunk ChassisBase chassis services1 plus channelized T1 or E1
MFT2
DVM to support digital cross-connect voice (channel bank functionality/
drop and insert) through digital PBX or channel bankVDM3 to support video codec dialing
VCM3 or VCM6, or HCM2 or HCM6, to support voice compression
1 Base chassis services include administrative access, Ethernet, data transport, and video transport.
2 The MFT is available with or without BRI backup.
3 If a VDM is installed, an MFT is required to support ATM for the video dialing network connection.
Table 3 Hardware Supported on the Cisco MC3810 Multiservice Access Concentrator
Module or Other Hardware Option Product Description Product Number Voice Interface Modules6-port AVM1
MC3810-AVM6=
1-port E1 DVM, connects to PBX/channel bank/key system2
MC3810-DVM-E1=
1-port T1 DVM, connects to PBX/channel bank/key system2
MC3810-DVM-T1=
1-port unbalanced E1 DVM, connects to PBX/channel bank/key system2
MC3810-DVM-BNC=
4-port BRI voice module3
MC3810-BVM4=
Video Dialing ModuleSupports an EIA/TIA-366 Automatic Calling Equipment (ACE) interface to the DTE port of the videoconferencing equipment4
MC3810-VDM=
Analog Personality Modules 51-port E&M analog module
MC3810-APM-EM=
1-port FXS analog module
MC3810-APM-FXS=
1-port FXO analog module
MC3810-APM-FXO=
1-port FXO analog module, approved for United Kingdom
MC3810-FXO-UK=
1-port FXO analog module, approved for Germany
MC3810-FXO-GER=
1-port FXO analog module, approved for PR26 countries
MC3810-FXO-PR2=
1-port FXO analog module, approved for PR37 countries
MC3810-FXO-PR3=
Voice Compression Modules 82-DSP HCM, supports up to 8 channels of compressed voice
MC3810-HCM2=
6-DSP HCM, supports up to 24 channels of compressed voice
MC3810-HCM6=
3-DSP VCM, supports up to 6 channels9 of compressed voice
MC3810-VCM3=
6-DSP VCM, supports up to 12 channels9 of compressed voice
MC3810-VCM6=
Multiflex Trunk Modules with Optional BRI1-port MFT with RJ-48 channelized T1 interface
MC3810-MFT-T1=
1-port MFT with RJ-48 channelized E1 interface
MC3810-MFT-E1=
1-port MFT with unbalanced E1-BNC interface
MC3810-MFT-BNC=
1-port MFT with RJ-48 channelized T1 and BRI S/T interfaces
MC3810-MFT-TBS=
1-port MFT with unbalanced E1-BNC and BRI S/T interfaces
MC3810-MFT-EUS=
1 Requires one to six APMs and one voice compression module (VCM3 or VCM6).
2 Requires one or two voice compression modules (VCM6) for processed voice.
3 Requires one voice compression module (VCM3 or VCM6) and Cisco IOS Release 12.0(4)T or a later release.
4 Requires MFT for ATM connectivity and Cisco serial V.35 DCE cable (product order number 72-1721-01) that includes a Ringing Indicator (RI) conductor, and a Cisco EIA/TIA-366 ACE cable (product order number 72-1722-01) to connect the VDM to the videoconferencing equipment RS-366 dialup DTE port.
5 For use with analog voice modules; one AVM requires at least one APM and supports up to six APMs.
6 PR2 countries currently include Australia and New Zealand.
7 PR3 countries currently include Japan and Singapore.
8 VCMs and Cisco IOS Plus feature sets are required for voice processing (for example, switching, compression, echo cancellation, and silence suppression) but not for drop-and-insert applications.
9 Cisco MC3810 maximum voice channel support by compression algorithm: G.711 at 64 kbps = 6 channels; G.726 at 32 kbps = 12 channels; G.729 at 8 kbps = 12 channels; G.729a at 8 kbps = 24 channels.
Determining the Software Version
To determine the version of Cisco IOS software running on your Cisco 3810, log in to the Cisco 3810 and enter the show version EXEC command:
Router> show versionCisco Internetwork Operating System SoftwareIOS (tm) 12.2 XG Software mc3810-a2isv5-mz, Version 12.2(2) XG1, RELEASE SOFTWAREUpgrading to a New Software Release
For general information about upgrading to a new software release, refer to Upgrading the Cisco IOS Software Release in Cisco Routers and Modems 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 12.2(2) XG1 supports the same feature sets as Cisco IOS Release 12.2 T, but Cisco IOS Release 12.2(2) XG1 can include new features supported by the Cisco 3810.
Caution Cisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to U.S. government export controls and have limited distribution. Strong encryption images to be installed outside the United States are likely to require an export license. Customer orders may be denied or subject to delay because of U.S. government regulations. When applicable, the purchaser/user must obtain local import and use authorizations for all encryption strengths. Please contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com.
Table 4 lists the features and feature sets supported by the Cisco 3810 in Cisco IOS Release 12.2(2) XG1 and uses the following conventions:
•Yes—The feature is supported in the software image.
•No—The feature is not supported in the software image.
•In—The number in the "In" column indicates the Cisco IOS release in which the feature was introduced. For example, (2)XG means a feature was introduced in 12.2(2) XG1.
Note You can find the most current Cisco IOS documentation on Cisco.com. If you have a Cisco.com login account, you can find image and release information regarding features prior to Cisco IOS Release 12.2(2) T by using the Feature Navigator tool at http://www.cisco.com/go/fn.
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 3810 for Cisco IOS Release 12.2(2) XG1.
New Hardware and Software Features in Cisco IOS Release 12.2(2) XG1
There are no new hardware and software features supported by the Cisco 3810 for Cisco IOS Release 12.2(2) XG.
New Hardware Features in Cisco IOS Release 12.2(2) XG
There are no new hardware feature supported in Cisco IOS Release 12.2(2) XG.
New Software Features in Cisco IOS Release 12.2(2) XG
The following new software feature is supported by the Cisco 3810 for Cisco IOS Release 12.2(2) XG:
Survivable Remote Site Telephony
The SRS Telephony feature enables the router to provide call handling support for the Cisco IP phones when the Cisco IP phones lose connection to the remote primary, secondary, or tertiary Cisco CallManager or when the WAN connection is down.
The Cisco CallManager 3.0 supports Cisco IP phones at remote sites attached to Cisco branch office multiservice routers across the WAN. Prior to the SRS Telephony feature, when the WAN connection between the remote branch office router and the Cisco CallManager failed or connectivity with the Cisco CallManager was lost for some reason, the Cisco IP phones at the branch office became unusable for the duration of the failure. The SRS Telephony feature overcomes this problem and enables the basic features of the Cisco IP phones by providing call-handling support on the branch office router for its attached Cisco IP phones. The system automatically detects the failure and uses the Simple Network Auto Provisioning (SNAP) technology to autoconfigure the branch office router to provide call processing for the local Cisco IP phones. The business at the remote site can continue to make and receive calls during the failure. When the WAN link or connection to the primary Cisco CallManager is restored, call-handling capabilities for the Cisco IP phones switch back to the primary Cisco CallManager. During a failure when SRS Telephony feature is enabled, the Cisco IP phone displays a message to inform you that the Cisco IP phones are in the Cisco CallManager fallback mode and are able to perform limited functions.
Refer to the following document for more information:
http://www.cisco.com/univercd/cc/td/doc/product/access/ip_ph/srs/index.htm
MIBs
Current MIBs
To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
Deprecated and Replacement MIBs
Old Cisco 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 network management system (NMS) applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 5.
Limitations and Restrictions
Changes to output attenuation Command
In Cisco IOS Release 12.2(2), the range of the output attenuation command for voice ports has changed from 0-14 to -6-14.
in important notes about Cisco IOS Release 12.2 XG that can apply to the Cisco 3810.
Caveats for Cisco IOS Release 12.2(2) XG
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only select severity 3 caveats are included in the caveats document.
All caveats in Cisco IOS Release 12.2 and Cisco IOS Release 12.2 T are also in Cisco IOS Release 12.2(2) XG1.
For information on caveats in Cisco IOS Release 12.2, see Caveats for Cisco IOS Release 12.2.
For information on caveats in Cisco IOS Release 12.2 T, see Caveats for Cisco IOS Release 12.2 T, which lists severity 1 and 2 caveats and select severity 3 caveats and is located on Cisco.com and the Documentation CD-ROM.
This section contains only open and resolved caveats for the current Cisco IOS maintenance release.
Caveat numbers and brief descriptions for Cisco IOS Release 12.2(2) XG1 are listed in Table 7. For details about a particular caveat, go to Bug Toolkit at http://www.cisco.com/kobayashi/bugs/bugs.html.
To access this location, you must have an account on Cisco.com. For information about how to obtain an account, go to the "Feature Navigator" section.
Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for any release. To reach Bug Navigator II, log in to Cisco.com and click Service and Support: Technical Assistance Center: Select & Download Software: Jump to a software resource: Software Bug Toolkit/Bug Watcher. Another option is to go to http://www.cisco.com/support/bugtools/.
Open Caveats—Cisco IOS Release 12.2(2) XG1
There are no open caveats specific to Cisco IOS Release 12.2(2) XG1 that require documentation in the release notes.
Resolved Caveats—Cisco IOS Release 12.2(2) XG1
All the caveats listed in Table 6 are resolved in Cisco IOS Release 12.2(2) XG1. This table lists only severity 1 and 2 caveats and select severity 3 caveats.
Open Caveats—Cisco IOS Release 12.2(2) XG
There are no open caveats specific to Cisco IOS Release 12.2(2) XG that require documentation in the release notes.
Resolved Caveats—Cisco IOS Release 12.2(2) XG
All the caveats listed in Table 7 are resolved in Cisco IOS Release 12.2(2) XG. This table lists only severity 1 and 2 caveats and select severity 3 caveats.
Related Documentation
The following sections describe the documentation available for the Cisco 3810. These documents consist of hardware and software installation guides, Cisco IOS configuration guides 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:
•Cisco IOS Software Documentation Set
Release-Specific Documents
The following documents are specific to Cisco IOS Release 12.2 and are located on Cisco.com and the Documentation CD-ROM:
•Cross-Platform Release Notes for Cisco IOS Release 12.2 and Cross-Platform Release Notes for Cisco IOS Release 12.2 T
On Cisco.com at:
Technical Documents: Cisco IOS Software: Cisco IOS Release 12.2: Release Notes: Cross-Platform Release Notes
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Release Notes: Cross-Platform Release Notes
•Product bulletins, field notices, and other release-specific documents on Cisco.com at:
Technical Documents
•The "Caveats for Cisco IOS Release 12.2(2) XG" section
As a supplement to the caveats listed in Caveats for Cisco IOS Release 12.2(2) XG in these release notes, see Caveats for Cisco IOS Release 12.2 and Caveats for Cisco IOS Release 12.2 T, which contain caveats applicable to all platforms for all maintenance releases of Cisco IOS Release 12.2 and Cisco IOS Release 12.2 T.
On Cisco.com at:
Technical Documents: Cisco IOS Software: Cisco IOS Release 12.2: Release Notes: Caveats
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Caveats
Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for any release. To reach Bug Navigator II, log in to Cisco.com and click Service & Support: Technical Assistance Center: Select & Download Software: Jump to a software resource: Software Bug Toolkit/Bug Watcher. Another option is to go to http://www.cisco.com/support/bugtools/bugtool.shtml.
Platform-Specific Documents
These documents are available for the Cisco 3810 on Cisco.com and the Documentation CD-ROM:
•Quick Start Guide Cisco 3600 Series Routers
•Hardware Installation Documents for Cisco 3600 Series
•Software Configuration Documents for Cisco 3600 Series
•Regulatory Compliance and Safety Documents for Cisco 3600 Series
On Cisco.com at:
Technical Documents: Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 3600 Series Routers
On the Documentation CD-ROM at:
Cisco Product Documentation: Access Servers and Access Routers: Modular Access Routers: Cisco 3600 Series Routers
Feature Modules
Feature modules describe new features that are supported in Cisco IOS Release 12.2 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 into the next printing of the Cisco IOS documentation set.
On Cisco.com at:
Technical Documents: Cisco IOS Software: Cisco IOS Release 12.2: New Feature Documentation
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: New Feature Documentation
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 establish 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. The Cisco IOS software documentation set is 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 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 at:
Technical Documents: Cisco IOS Software: Cisco IOS Release 12.2: Configuration Guides and Command References
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Configuration Guides and Command References
Cisco IOS Release 12.2 Documentation Set Contents
Table 8 lists the contents of the Cisco IOS Release 12.2 software documentation set, which is available in both electronic and printed form.
Note You can find the most current Cisco IOS documentation on Cisco.com and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed.
On Cisco.com at:
Technical Documents: Cisco IOS Software: Cisco IOS Release 12.2
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
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 and may be more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
•Registered Cisco Direct Customers can order Cisco Product documentation from the Networking Products MarketPlace:
http://www.cisco.com/cgi-bin/order/order_root.pl
•Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:
http://www.cisco.com/go/subscription
•Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, in North America, by calling 800 553-NETS(6387).
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, use the response card behind the front cover of your document, or write to the following address:
Attn Document Resource Connection
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.
Cisco.com
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 provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, 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 can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
To access Cisco.com, go to the following website:
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
P3 and P4 level problems are defined as follows:
•P3—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
•P4—You need information or assistance on Cisco product capabilities, product installation, or basic product configuration.
In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.
To register for Cisco.com, go to the following website:
http://www.cisco.com/register/
If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:
http://www.cisco.com/tac/caseopen
Contacting TAC by Telephone
If you have a priority level 1 (P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
•P1—Your production network is down, causing a critical impact to business operations if service is not restored quickly. No workaround is available.
•P2—Your production network is severely degraded, affecting significant aspects of your business operations. No workaround is available.