Table Of Contents
Release Notes for Cisco MC3810 for Cisco IOS Release 12.1
Determining the Software Version
Upgrading to a New Software Release
New Hardware Features in Release 12.1(6)
New Software Features in Release 12.1(6)
Caveat CSCdr91706 and IOS HTTP Vulnerability
Command Changes in Release 12.1(5)
Using the Cisco MC3810 with QSIG or BRI
Using the Cisco MC3810 with the PSTN
Cisco IOS Software Documentation Set
Cisco IOS Release 12.1 Documentation Set
Obtaining Technical Assistance
Contacting TAC by Using the Cisco TAC Website
Release Notes for Cisco MC3810 for Cisco IOS Release 12.1
January 2, 2001
Note
You can find the most current Cisco IOS documentation on Cisco Connection Online (CCO). These electronic documents may contain updates and modification made after the hardcopy documents were printed.
These release notes for the Cisco MC3810 multiservice access concentrator support Cisco IOS Release 12.1, up to and including Release 12.1(6). These release notes are updated as needed to describe new features, memory recommendations, hardware support, software platform deferrals, and changes to related documents.
For a list of software caveats that apply to Cisco IOS Release 12.1(6), refer to the document Caveats for Cisco IOS Release 12.1 that accompanies these release notes. The caveats document is updated for every maintenance release and is located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Use these release notes with the cross-platform Release Notes for Cisco IOS Release 12.1 located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Contents
These release notes describe the following topics:
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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 customer premises equipment (CPE) 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, and 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 log-in facilities provided by Telnet and rlogin. Three types of configuration interfaces are provided:
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The HTTP-based interface allows configuration from any web browser such as Netscape Navigator or Microsoft Explorer. The SNMP MIB allows management of the Cisco MC3810 from SNMP managers (for example, HP OpenView).
System Requirements
This section describes the system requirements for Cisco IOS Release12.1(6):
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Memory Recommendations
Table 1 lists the minimum recommended memory for the Cisco 3810 series for Cisco IOS Release 12.1(6).
Table 1 Memory Recommendations for the Cisco MC3810
FromIP
mc3810-i-mz
4 MB1
16 MB2
RAM
IP Plus
mc3810-is-mz
8 MB
32 MB
RAM
IP/ATM Plus
mc3810-a2is-mz
8 MB
32 MB
RAM
IP Plus ATM MCM H323
mc3810-a2isx-mz
8 MB
32 MB
RAM
Enterprise Plus
mc3810-js-mz
8 MB
32 MB
RAM
Enterprise/ATM Plus
mc3810-a2js-mz
8 MB
32 MB
RAM
Enterprise Plus ATM MCM H323
mc3810-a2jsx-mz
8 MB
32 MB
RAM
1 Required Flash for IP feature set; default configuration includes 8 MB.
2 Required DRAM for IP feature set; default configuration includes 32 MB.
Hardware Supported
Cisco IOS Release12.1(6) supports the Cisco MC3810 multiservice access concentrator. The Cisco MC3810 base chassis is a semi-fixed 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:
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Cisco MC3810 series concentrators are supplied in various standard hardware configurations. These 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 not equipped with a functional module is closed off with a removable cover plate.
Table 2 Cisco MC3810 Series Standard Hardware Categories
Base chassis services1
None
Optional modules can be added to create other chassis variations
Base 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
(only one voice compression module)MFT2 to support a channelized T1 or E1 trunk
MFT2 and VDM3 to support video codec dialing
Base chassis services1 plus compressed digital voice through digital PBX
DVM
VCM3 or VCM6 or
(one or two voice compression modules)MFT2 to support a channelized T1 or E1 trunk
MFT2 and VDM to support video codec dialing
Base chassis services1 plus compressed digital voice through PINX
BVM and MFT1
VCM3 or VCM6 or
(only one voice compression module)MFT to support a channelized T1 or E1 trunk
MFT2 and VDM3 to support video codec dialing
Base 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 and/or VCM6 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 for Cisco IOS Release 12.1
6-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
Supports an RS-366 Automatic Calling Equipment (ACE) interface to the DTE port of the videoconferencing equipment4
MC3810-VDM
1-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 the U.K.
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
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
1-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 RS-366 ACE cable (product order number 72-1722-01) to connect the VDM to the videoconferencing equipment RS-366 dial-up 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 a Cisco MC3810, log in and enter the show version EXEC command:
MC3810>show versionCisco Internetwork Operating System SoftwareIOS (tm) MC3810 Software (mc3810-js-mz), Version 12.1(6), RELEASE SOFTWAREUpgrading to a New Software Release
For general information about upgrading to a new software release, see the product bulletin Cisco IOS Upgrade Ordering Instructions on CCO at:
http://www.cisco.com/warp/public/cc/cisco/mkt/ios/prodlit/957_pp.htm
Feature Set Table
Cisco IOS software is packaged in feature sets consisting of software images—depending on the platform. Table 4 lists the available Cisco IOS Release 12.1(6) software images.
Table 5 lists the features and feature sets supported by the Cisco MC3810 in Cisco IOS Release 12.1(6) and uses the following conventions:
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Note
Table 5 Feature List by Feature Set for the Cisco MC3810
PlusATM LANE FSSR Protocol
No
Yes
Yes
Yes
Yes
Yes
Yes
Frame Relay-ATM Interworking (FRF.5) Enhancements
No
No
Yes
Yes
No
Yes
Yes
Frame Relay-ATM Interworking (FRF.8)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ Enhanced Load Balancing
No
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ Ethernet Redundancy
No
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ Peer Clusters
No
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ RSVP
No
Yes
Yes
Yes
Yes
Yes
Yes
DLSw+ RSVP Bandwidth Reservation
No
Yes
Yes
Yes
Yes
Yes
No
CLI String Search
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Response Time Reporter (RTR) Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Service Assurance Agent (formerly RTR) Enhancements
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SNMP version 3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Application Specific Routing
No
No
No
No
No
No
No
Gateway Support for Alternate Gatekeeper
No
No
No
Yes
No
No
Yes
H.323 Gatekeeper and Proxy
No
No
No
Yes
No
No
Yes
H.235 Accounting and Security Enhancements for Cisco Gateways
No
No
No
Yes
No
No
Yes
H.323 Version 2
No
No
No
Yes
No
No
Yes
H.323 Multizone Enhancements
No
No
No
Yes
No
No
Yes
H.323 Hot Standby Routing Protocol (HSRP)
No
No
No
Yes
No
No
Yes
Multicast Routing Monitor
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Multimedia Conference Manager
No
No
No
Yes
No
No
Yes
PGM Router Assist
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Process MIB
Yes
Yes
Yes
No
Yes
Yes
No
Response Time Reporter Enhancements
Yes
Yes
Yes
No
Yes
Yes
No
Cisco MC3810 - IGX 8400 Interworking
No
Yes
Yes
Yes
Yes
Yes
Yes
Priority Queuing Support Enhancement for Cisco MC3810-IGX Interworking
No
Yes
Yes
Yes
Yes
Yes
Yes
Time-Based Access Lists
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Tunneling Endpoint Discovery
No
No
No
No
Yes
Yes
Yes
ATM Video SVCs
No
No
Yes
Yes
No
Yes
Yes
ATM Voice SVCs
No
No
Yes
Yes
No
Yes
Yes
Call Detail Records (CDR)
No
Yes
Yes
Yes
Yes
Yes
Yes
Fancy Queuing on Frame Relay or Cisco HDLC
Yes
Yes
Yes
Yes
Yes
Yes
Yes
G.726 (ADPCM)
No
Yes
Yes
Yes
Yes
Yes
Yes
ISDN BRI Voice Module1
No
Yes
Yes
Yes
Yes
Yes
Yes
ISDN PRI QSIG Digit Forwarding1
No
Yes
Yes
Yes
Yes
Yes
Yes
ISDN PRI QSIG Voice Signaling1
No
Yes
Yes
Yes
Yes
Yes
Yes
Local Voice Busy Out
No
Yes
Yes
Yes
Yes
Yes
Yes
Multi-length Dial Patterns
No
Yes
Yes
Yes
Yes
Yes
Yes
OPX Ring-Through
No
Yes
Yes
Yes
Yes
Yes
Yes
Permanent Connection
No
Yes
Yes
Yes
Yes
Yes
Yes
Preference-based Hunt Groups
No
Yes
Yes
Yes
Yes
Yes
Yes
Transparent CCS
No
Yes
Yes
Yes
Yes
Yes
Yes
Voice over Frame Relay Using FRF.11 and FRF.12
No
Yes
Yes
Yes
Yes
Yes
Yes
Facility Data Link Capabilities on Multiflex Trunk
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Frame Relay End-to-End Keepalive
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Frame Relay-ATM Interworking (FRF.8)
No
No
Yes
Yes
No
Yes
Yes
Integrated BRI Backup1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Multicast Source Discovery Protocol (MSDP)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
X.25 Closed User Groups
No
Yes
Yes
Yes
Yes
Yes
Yes
X.25 Switch Local Acknowledgment
No
Yes
Yes
Yes
Yes
Yes
Yes
X.25 over Frame Relay (Annex G)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
1 When the older motherboard (SCB 6.06) is used with this feature, serial port 1 cannot be used. When the new motherboard (SCB 6.07 and later versions) is used, serial port 1 can be used in DCE mode only.
New and Changed Information
The following is a list of the new hardware and software features supported by the Cisco MC3810 for Release 12.1(6).
New Hardware Features in Release 12.1(6)
There are no new hardware features supported by the Cisco MC3810 in Cisco IOS Release12.1(6).
New Software Features in Release 12.1(6)
There are no new software features supported by the Cisco MC3810 in Cisco IOS Release 12.1(6).
Important Notes
This section contains important information about the use of your Cisco IOS Release12.1(6) software.
Caveat CSCdr91706 and IOS HTTP Vulnerability
A defect in multiple releases of Cisco IOS software will cause a Cisco router or switch to halt and reload if the IOS HTTP service is enabled, browsing to http://router-ip/anytext?/ is attempted, and the enable password is supplied when requested. This defect can be exploited to produce a denial of service (DoS) attack.
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. Customers are urged to upgrade to releases that are not vulnerable to this defect as shown in detail below.
This vulnerability can only be exploited if the enable password is known or not set.
You are strongly encouraged to read the complete advisory, which is available at http://www.cisco.com/warp/public/707/ioshttpserverquery-pub.shtml.
Command Changes in Release 12.1(5)
The ppp ipcp command, which supplies Domain Name System (DNS) or Windows Internet Naming Service (WINS) addresses during IP Control Protocol (IPCP) negotiation, has been enhanced with the reject and accept keywords. These keywords allow enabling or disabling support for the Microsoft IPCP extensions defined by RFC 1877.
Deprecated MIBs
Old Cisco Management Information Bases (MIBs) will be replaced in a future release. OLD-CISCO-* MIBS are currently being migrated 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 the following table.
Using the Cisco MC3810 with QSIG or BRI
Serial port 1 is restricted to DCE operation when the following occurs:
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•
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Using the Cisco MC3810 with the PSTN
This section includes important notes regarding use of the Cisco MC3810 with the Public Switched Telephone Network (PSTN).
Connections to the PSTN
Exercise care when connecting switched voice ports on the Cisco MC3810 directly to the PSTN because improper configurations can expose a corporate network to telephone fraud.
Switched Access from the PSTN
The Cisco MC3810 can connect a user from the PSTN directly to the corporate wide-area telephone network. You can configure the Cisco MC3810 as a phone switch that can switch a user to any location in that network, even to remote locations that are connected again to another PSTN. However, the Cisco MC3810 does not provide any mechanism to restrict users from calling after they are connected. Without proper network design, this condition could result in the unauthorized use of the corporate network for making calls at the corporation's expense. To prevent this from occurring, Cisco does not recommend connecting a switched voice interface on the Cisco MC3810 directly to the PSTN. Instead, it should be connected to a PBX that implements a security scheme that prevents unauthorized use.
Non-Switched Calls
The same opportunity for illicit use does not exist for non-switched call types such as pass-through connections, although the possibility for fraud does exist at the direct contact point. Pass-through calls create a path to only a single location specified by the network administrator. For example, a pass-through connection might be used to pass a trunk from a PBX to the PSTN. In this case, the trunk on the PBX always passes straight through the Cisco MC3810 to the PSTN. As a result, the necessary security is provided by the PBX.
Caveats
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.
For information on caveats in Cisco IOS Release 12.1(6), see Caveats for Cisco IOS Release 12.1, which lists severity 1 and 2 caveats and select severity 3 caveats for Cisco IOS Release 12.1(6) and is located on CCO and the Documentation CD-ROM.
Note
http://www.cisco.com/support/bugtools
Related Documentation
The following sections describe the documentation available for the Cisco MC3810. 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 CCO and the Documentation CD-ROM.
Use these release notes with the documents listed in the following sections:
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Release-Specific Documents
The following documents are specific to or support Cisco IOS Release12.1(6). They are located on CCO and the Documentation CD-ROM:
•
To reach the cross-platform Release Notes for Cisco IOS Release 12.1 on CCO, follow this path, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes
To reach the cross-platform Release Notes for Cisco IOS Release 12.1 on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes
•
To reach these documents, refer to the Service & Support section at this path on CCO:
Technical Documents
•
The Caveats for Cisco IOS Release 12.1 document contains caveats applicable to all platforms for all maintenance releases of Cisco IOS Release 12.1.
To reach the caveat document on CCO, follow this path, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Caveats: Caveats for Cisco IOS Release 12.1
To reach the caveat document on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS 12.1: Caveats: Caveats for Cisco IOS Release 12.1
Note
http://www.cisco.com/support/bugtools
Platform-Specific Documents
The documents listed below are available for the Cisco MC3810. These documents are also available online at Cisco Connection Online (CCO) and on the Documentation CD-ROM.
•
•
•
•
•
•
To reach Cisco MC3810 documentation on CCO, follow this path, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Access Servers and Access Routers: Multiservice Access Concentrators
To reach Cisco MC3810 documentation on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Access Servers and Access Routers: Multiservice Access Concentrators
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. These documents 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 comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Each configuration guide can be used 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.
To reach these documents on CCO, follow this path, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
To reach these documents on the Documentation CD-ROM, follow this path:
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 7 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form if ordered.
Note
To reach the Cisco IOS documentation set from CCO, click on this path, beginning under the Service & Support heading:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1
To reach the Cisco IOS documentation set on the Documentation CD-ROM, click on this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1
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:
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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:
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http://www.cisco.com/cgi-bin/order/order_root.pl
•
http://www.cisco.com/go/subscription
•
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 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:
http://www.cisco.com
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:
http://www.cisco.com/tac
P3 and P4 level problems are defined as follows:
•
•
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:
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Guest
