Table Of Contents
Release Notes for Cisco Media Gateway Controller Node Manager Release 2.3
February 8, 2007
The Cisco Media Gateway Controller (MGC) Node Manager (Cisco MNM) is an element management system (EMS) for the Cisco Media Gateway Controller Node, a call control node based on the Cisco PGW 2200 Softswitch. Cisco MNM provides basic management of the Cisco Media Gateway Controller Node devices including fault, configuration, performance and security.
Cisco MNM 2.3(2) is built on version 3.2 of the Cisco Element Management Framework (CEMF) software package. This release adds support for Cisco MGC host call control software Release 9.3(2) and provides backward-compatibility across older versions of the software, including the 7.4(11), 7.4(12), and 9.x releases.
These release notes describe the features and caveats for Cisco MNM. Please read this entire document prior to using Cisco MNM as it contains pertinent information about installing, configuring, and using the software. This document provides up-to-date information about the current release of the Cisco MNM from Cisco Systems, Inc.
For more information on the Cisco MNM software, please visit Cisco's Web site at:
http://www.cisco.com > Products and Services > Network Management > Cisco Media Gateway Controller Node Manager.
Note The Cisco PGW 2200 PSTN Gateway has been renamed as the Cisco PGW 2200 Softswitch. Older names of this product are the Cisco VSC 3000 and Cisco SC 2200. Some documents may still use the older names.
Software Release History
Release 2.3(2) supports Cisco MGC Release 9.3(2) software.
Cisco MNM 2.3(2) adds support for managing the features new in Cisco MGC Release 9.3(2), as shown in Table 1. Enhancement identification numbers are listed where applicable.
Caveats Resolved in Release 2.3(2)
The following caveats were resolved in this release:
Release 2.3(1) Patch 3 Information
The following caveats were resolved in Release 2.3(1) Patch 3:
Table 3 Resolved in Release 2.3(1) Patch 3
DDTS Number Description
The Cisco MGC host controller crashes when the Cisco SC2200 is down.
Release 2.3(1) Patch 2 Information
The following caveats were resolved in Release 2.3(1) Patch 2:
Table 4 Resolved in Release 2.3(1) Patch 2
DDTS Number Description
PTC not able to delete nailed trunks.
Release 2.3(1) Patch 1 Information
The following caveats were resolved in Release 2.3(1) Patch 1:
Release 2.3(1) Information
The following caveats were resolved in Release 2.3(1):
The following caveats were resolved in Release 2.1(2):
•The Backup/Restore feature has been removed. This feature is now supported in VSPT.
•Cisco MGX support has been removed. Cisco MGX is now supported in the Cisco MGM Element Manager.
•Online documentation added.
•Cisco MNM has been enhanced to display performance data for SS7Path.
•A new dialog box has been created for Dial Plan properties.
•Added upgrade option to provide ability to upgrade from Cisco MNM 1.5 to Cisco MNM 2.x.
The following caveats were resolved:
The following is the minimum hardware and software you need to install and run Cisco MNM:
•Sun Ultra 60 workstation with 2 CPUs (440 MHz or faster)
•Sun Solaris 8 operating system
–April 2001 release recommended
–Open Windows with the Common Desktop Environment (CDE)
•2.0 GB of RAM (or greater)
•9 GB SCSI drives properly configured. The database drives should be configured as RAW devices and connected to a separate SCSI controller for maximum performance.
•The tmpfs file system must be mounted to /tmp for maximum performance.
•ObjectStore (Cisco Element Management Framework (CEMF) database program) should be configured to use raw file systems
Note Detailed system requirements are documented in Chapter 2 of the Cisco Media Gateway Controller Node Manager User's Guide. Review this chapter prior to installing or configuring the software.
Note Installing drives greater than 9 GB does not result in performance gains. The main bottleneck of the CEMF application is hard disk input/output (i/o) speed, not capacity. Maximum performance is achieved using many drives of lower capacity instead of a few, larger capacity drives.
Supported Network Elements
The following network elements have been tested and verified to work with this release 2.3(2) of the Cisco MNM.
Note All other releases of Network Element Software have not been tested and are not supported with this release.
7.4(11), 7.4(12), 9.14(T), 9.1(5), 9.2(2), 9.3(1), and 9.3(2)
•Billing and Measurement Server (BAMS):
2.63, 2.64, 2.65, 2.67i, 2.68, 3.08, 3.10, and 3.12
•H.323 Signaling Interface (HSI)
2.21 (backward compatible with 2.20)
•Catalyst 5500 or 6500:
5.x or higher
Cisco IOS Release 12.x
Cisco 2611 or 2651 router running Cisco IOS Release 12.1(x), 12.2(x)
Cisco 2611XM router running Cisco IOS Release 12.2(11)T2
Cisco AS5350 or AS5400 access server running Cisco IOS Release 12.2(10.6)T
•Cisco EMF: Cisco MNM 2.3(2) has been tested and verified with CEMF 3.2 patch 3 and CEMF 3.2 Patch 4.
Installation Procedure Checklist
Before installing the software, read Chapter 2, Installing CMNM, of the Cisco MGC Node Manager User's Guide. If you are setting up a client/server architecture, then the CEMF and Cisco MNM software must be installed on both the client and server workstations. The Cisco MNM installation software determines whether the client or manager software should be installed.
•Verify that the minimum hardware requirements pertaining to your site have been met
•Ensure that the computer is in DNS
–Ensure that the computer is using DNS
The computer must have a valid entry in DNS.
–If the computer is not using DNS, disable Name Resolution completely (that is, there should be no /etc/resolv.conf file).
•Verify that the CEMF software has been installed and is running (the CEMF software must be running for the Cisco MNM software to be installed.)
Note Refer to the "Installing CMNM" section in the "Cisco Media Gateway Controller Node Manager Users Guide" for detailed instruction on how to mount the CD-ROM.
Step 1 Become the root user.
Step 2 Place Cisco MNM CD in the CD-ROM drive.
Step 3 Change to the /cdrom/cdrom0 directory
Step 4 Execute the command: ./installCSCOcmnm.
Step 5 Follow the on-screen prompts.
Step 6 Eject the CD-ROM when the installation is complete.
Upgrade Procedure Checklist
The Cisco MNM upgrade process enables you to easily upgrade from Cisco MNM Release 1.5. Refer to the "Upgrading from CMNM Release 1.5" section of the "Cisco Media Gateway Controller Node Manager Users Guide" for detailed instructions on how to mount the CD-ROM.
Step 1 Become the root user.
Step 2 Place Cisco MNM CD in the CD-ROM drive.
Step 3 Change to the /cdrom/cdrom0 directory.
Step 4 Execute the command ./installCSCOcmnm -upgrade.
Step 5 Follow the on-screen prompts.
Step 6 Eject the CD-ROM when the installation is complete.
The Cisco MNM patch process is cumulative. Downloading and installing the latest patch installs all previous patches. The patch process automatically determines which portions of the Cisco MGC Node Manager need to be patched. In order for you to install a patch, the base Cisco MGC Node Manager software must be installed. Use the following steps to install the desired patch.
Step 1 Verify that the base Cisco MGC Node Manager software is installed.
Step 2 Become the root user.
Step 3 Create a temporary installation directory /opt/cmnm_tmp_install.
Step 4 Download the patched software:
a. Go to www.cisco.com.
b. Log in.
c. Navigate to Technical Support > Software Center > Products and Downloads > Voice Software. On this page find and click on Cisco Media Gateway Controller Node Manager. You go to the patch download page.
d. Download the desired patch to the temporary installation directory.
Step 5 Extract the patched software. For example, you can use:zcat CSCOcmnmPatch_0x.tar.Z | tar xvf -
Step 6 Execute the command: ./patchCSCOcmnm
Step 7 Follow the on-screen prompts.
Known Issues and Operational Recommendations
This section contains information about known issues and the corresponding workarounds.
Note For more information about Cisco IOS issues and workarounds, see the Cisco IOS release notes for your platform.
Cisco MNM Checks for Available Disk Space For Installation
During installation, Cisco MNM detects how much disk space is available for installation. If the system does not have enough available disk space, you are prompted whether you want to continue the installation routine. If you enter 'N' to stop the Cisco MNM installation, the installation continues.
The workaround is to ensure that enough free disk space is available before Cisco MNM is installed. The amount of disk space required is detailed in the Cisco MNM installation guide.
Cisco MNM Cannot Discover an Interface or IP Address for BAMS
Sometimes Cisco MNM reports that it cannot discover an interface or IP address for BAMS. This might be caused by the mib2agt getting into a strange state. You can restart the mib2agt by stopping the current process. The new process mib2agt is restarted automatically.ps -ef | grep mib2agt kill -9 <PID>
Using the VNC Viewer to Access Cisco MNM Remotely
X terminal remote access to Cisco MNM has been tested with Reflection X. If you use the AT&T Virtual Network Computing Viewer to access Cisco MNM remotely, you may encounter a display problem when you launch the Cisco MGC Host Toolbar, caused by the current Cisco MNM address translation process.
To display the Cisco MGC Toolbar launched from Cisco MNM:
In the VNC Viewer window before launching Cisco MNM, set the display by doing one of the following (depending on which shell you are using):
If you are using "sh" or "bash", run this command:export DISPLAY=10.1.1.1:n.0
If you are using "csh", run this command:setenv DISPLAY 10.1.1.1:n.0
where 10.1.1.1 is the IP address of the VNC host (usually the Cisco MNM presentation server) and n.0 is the port ID that matches the instance of the VNC server you are logging into.
You may then launch Cisco MNM normally and PGW tools will be properly displayed.
Hints and Tips
Initial Cisco MNM Configuration
Cisco MNM is initially configured with one user:id: admin password: admin
Sample Network Seed File
A sample network seed file is located at: <CEMF Direcory>/samples/seedfile.txt. To access the <CEMF Directory>, enter the following command:
Manager:pkgparam CSCOcemfm BASEDIR
Client:pkgparam CSCOcemfc BASEDIR
Installing CEMF/Cisco MNM on a Server
If you have installed CEMF/Cisco MNM on a server and need to change the IP address/hostname, you must make the changes shown in the following procedudre:
Note The following example uses the hostname CMNM and the IP address 10.1.1.1.
Step 1 #cd <CEMF Directory>/bin
Step 2 #./cemf stop
Step 3 Edit /var/adm/Atlantech/system/info to reflect the following hostname and ip address:MGRHOSTNAME=ramblerMGRIPADDRESS=10.1.1.1COREHOSTNAME=rambler
Step 4 Edit <CEMF Directory>/config/env/avCore.sh to reflect the hostname in the lines below, and save the file.MgrSystemManager=rambler1270; export MgrSystemManagerPortAllocator=rambler1270; export PortAllocatortransRouter=rambler1271; export transRouter;
Step 5 Edit /var/sadm/pkg/CSCOcemfm/pkginfo to reflect the following values:MGRIPADDRESS=10.1.1.1MGRHOSTNAME=10.1.1.1COREHOSTNAME=10.1.1.1LOCALHOSTNAME=10.1.1.1
Step 6 You will also need to make these same changes for each Element Manager. To do so, edit the following files:/var/sadm/pkg/hostEM/pkginfo/var/sadm/pkg/mgcEM/pkginfo/var/sadm/pkg/mgxEM/pkginfo
Step 7 Rename <CEMF Directory>/ODI/OS5.1/ostore/<hostname>_server_parameter to reflect the new hostname.
Note You must obtain a new CEMF license. For information on obtaining a new CEMF license, refer to "CEMF Licensing" in the "Troubleshooting" section.
Step 8 <CEMF Direcory>/bin/cemf start
Configuring the CEMF Software for Maximum Performance
The following are guidelines for installing CEMF:
•Use the primary drive for the Solaris operating system and the ObjectStore transaction log.
•The second drive should contain the CEMF software (that is, /opt/cemf).
•Configure the ObjectStore database for Raw FileSystems. The remaining hard drives should contain the RAW FileSystem partitions for the CEMF database (preferably on a separate SCSI controller).
Mount the tmpfs file system to /tmp so the ObjectStore cache files can be kept in memory. ObjectStore is the database program included with CEMF. Keeping the cache files in memory provides for an enormous performance boost for CEMF. Here is how the tmpfs line should read in the /etc/vfstab file (the blank areas between the keywords are spaces):swap - /tmp tmpfs - yes -
Configuring Raw Filesystems in ObjectStore
By default, the CEMF database system (ObjectStore) is configured to use typical cooked file systems (that is, filesystems with readable directory entries) for the database. However, database performance is maximized when ObjectStore is configured to use Raw file systems. To achieve maximum performance, the hard drives containing the Raw file systems should be on a separate SCSI controller (not on the same controller as the primary operating system drive). The following should be noted:
•Partition the hard drives when you install the Solaris operating system.
•Type the command, /bin/pkgparam CSCOcemfm BASEDIR to get the installation directory for the CEMF software.
•All Raw partitions must be exactly the same size (in MB). ObjectStore does not use partitions of different sizes.
•The Raw partition names (that is, /dev/rdsk/c0t1d0s3) must be available before starting the configuration session.
•Determine the name of the machine (for example,cemfserver).
•Adding, modifying, and/or deleting Raw File systems resets the ObjectStore database and destroys any existing data there.
Complete the following steps to start the ObjectStore and CEMF processes:
Step 1 Log in to the system as the root user.
Step 2 Using the following command, stop the current CEMF processes:
Step 3 Shut down ObjectStore:
Step 4 Shut down the AV license manager:
Step 5 Start a CEMF shell:
Step 6 Change to the CEMF installation directory:
Step 7 Change the directory to ./ODI/OS5.1/ostore/etc (under /opt/<INSTALL_DIR>).
Step 8 Edit the hostname server parameter file (<hostname>_server_parameters) with the following modifications:
•Put a comment character # at the beginning of the Log File line. This places the transaction log in the Raw partition and improves performance.
•Add an entry for each Raw Partition ObjectStore will use. Each line must begin with PartitionX: (where X is a number, starting with zero and incrementing by one).
Note Don't forget the colon character.
–Each line must have the word PARTITION as the second element.
–Each line must have the Raw partition listed as the last element (use the rdsk partition identifier).
–Example:unix-shell#> cd /opt/CSCOcemf/ODI/OS5.1/ostore/etcunix-shell#> cat cemfserver_server_parameters#Log File: /opt/transact.logPartition0: PARTITION /dev/rdsk/c2t9d0s0Partition1: PARTITION /dev/rdsk/c2t10d0s0Partition2: PARTITION /dev/rdsk/c2t12d0s0Partition3: PARTITION /dev/rdsk/c2t13d0s0unix-shell#>
Step 9 Change directory to <CEMF_INSTALL>/ODI/OS5.1/ostore/lib. For example, /opt/CSCOcemf/ODI/OS5.1/ostore/lib.
Step 10 Run the command ./osserver -i to reinitialize ObjectStore. Answer yes when prompted to reinitialize the database.
Step 11 Run the command /etc/init.d/cemf reset to reset the CEMF database. Answer yes when prompted.
Step 12 Run the command /etc/init.d/cemf start to start the ObjectStore and CEMF processes.
ObjectStore is now using RAW databases.
Viewing Core Files Generated by CEMF and Cisco MNM
Use the /opt/cemf/bin/listCores command to view all core files generated by CEMF and Cisco MNM.
If you are having problems with CEMF licensing, you might need to stop and restart the license manager daemon. To do so, execute the following commands:#> /etc/rc2.d/S98alvm stop #> /etc/rc2.d/S98alvm start
Note The CEMF licenses are fixed for a particular machine. You cannot copy the license file from one machine to another. If you want to install the CEMF software on another machine, you must contact Cisco TAC and ask for a new license. You will need the hostname and hostid of the new machine.
Viewing the Most Recently Changed Log Files
Cisco MNM log files are stored in <CEMF Directory>/logs. You can view the most recently changed log file with ls -lt command.
Interesting Cisco MNM Log Files
Some interesting Cisco MNM log files are:
•hostController.log [MGC Host]
•mgcController.log [MGC Node]
•trapLog.log Incoming traps are logged here, to separate them from CEMF log messages collected in mgcTrapProcessor.log.
Error Messages That Are Safe to Ignore
Most of the entries in the Cisco MNM log files are created by the CEMF platform and are of limited value. The following error messages are safe to ignore:
•SNMP and MIB parsing errors (which display when an EM controller starts):
–SNMP : ERROR mib.cc:1283 Mib Object is already on the tree for .
–SNMP : ERROR mibDependencyMgr.cc:191 mibDependencyMgr.cc:196 Mib . not defined
–SNMP : ERROR mibParser.y:359 EXPORTS are currently ignored (;, line 8)
–SNMP : WARN mibParser.y:1154 Name and number form OIDs are not properly implemented ().
•Database warning (which display when an EM controller is first installed):
general : WARN Creating Database /opt/AV3/db/mgcController.db
•General errors (which display when the EM controller starts up):
–general : ERROR Unable to get event channel ID for channel ' '
–general : ERROR EventChannelManager : Failed to find location for event channel
–general : WARN OGManager::OGManager - Unable to get deleteEventChannel from .ini file
–general : ERROR OGManager::processGroupClass - invalid class id
–general : ERROR EventChannelManager : Failed to find location for event channel ERROR OGManager::processGroupClass - invalid class id
–general : ERROR OGChangeEventHandler::process - could not find drep!
–general : ERROR IdAllocatorOS : Deprecated constructor called
–Task : WARN PerfPollTask::createGroupsResult : group . already exists.
–mgcController : WARN Controller::initialiseController Controller is configured NOT to auto populate tech tree on autodiscover
•Other misc errors:
–general : WARN CommsBuffer::serialize - resizing buffer size
–general : ERROR PersistentAttributeStore::PersistentAttributeStore() nameInit = 'xxx. is longer than 16 characters. All Objectstore segment comments will be truncated to use the first 16 characters.
Resetting the User Password
If you forget your password, you can reset the CEMF user IDs and passwords. The following command removes all passwords, and resets the admin user ID's password to admin.<CEMF Directory>/bin/cemf shell <CEMF Directory>/bin/partitioningTool -r
Backing Up and Restoring the CEMF/Cisco MNM Databases
The following command backs-up the CEMF/Cisco MNM databases. By default the backup files are placed in /opt/AVBackup./opt/CSCOcemf/bin/cemf stop /opt/CSCOcemf/bin/cemf backup /opt/CSCOcemf/bin/cemf start
The following command will restore a CEMF/Cisco MNM database./opt/CSCOcemf/bin/cemf stop /opt/CSCOcemf/bin/cemf restore -t mm-dd-yyyy /opt/CSCOcemf/bin/cemf start
For more information on backing up and restoring CEMF/Cisco MNM Databases refer to the "Cisco EMF Database Backup and Restore Procedures" section of the Installing, Licensing, and Configuring Cisco EMF Manual.
Forcing an Uninstall of an Element Manager
The CEMF daemons must be running for the Element Managers (EMs) to uninstall. There are two ways to force an uninstall of an EM; both cause loss of all CEMF/Cisco MNM data. Before running these commands, it is recommended that you back up your databases.
The uninstallCSCOcmnm script can be invoked with an undocumented option to force the removal of all or one EM. From a command line, as root, type the command:
/opt/CSCOcemf/uninstall/uninstallCSCOcmnm -force [-em <EM>]
You can specify only one EM to remove or all EMs by omitting that parameter. The list of EMs includes hostEM, mgcEM, andmgxEM.
/opt/CSCOcemf/uninstall/uninstallCSCOcmnm -force -em mgxEM -em mgcEM
After you run this command, the CEMF databases are corrupted. To correct this problem, reset the CEMF databases by running the following command. You must do this before using CEMF again, even using CEMF to reinstall Cisco MNM./opt/CSCOcemf/bin/cemf stop /opt/CSCOcemf/bin/cemf reset /opt/CSCOcemf/bin/cemf start
After you have successfully reset the database and restarted CEMF, you must reinstall Cisco MNM. If you want to restore a CEMF/Cisco MNM database after you have reinstalled Cisco MNM, refer to "Backing up and restoring the CEMF/CMNM Databases" in the preceding section.
If the above method doesn't remove the EMs, then you can try another method. When the EMs are installed, Solaris package information is placed in subdirectories of /var/sadm/pkg. The subdirectory is the name of the packge, as specified above (that is, hostEMm, mgcEMm, and so on.). As the root user, complete the following steps for each EM that you want to remove./opt/CSCOcemf/bin/cemf stop touch /var/sadm/pkg/<EM>/install/.avload pkgrm <EM> /opt/CSCOcemf/bin/cemf reset /opt/CSCOcemf/bin/cemf start
Example:/opt/CSCOcemf/bin/cemf stop touch /var/sadm/pkg/mgcEMm/install/.avload pkgrm mgcEMm /opt/CSCOcemf/bin/cemf reset /opt/CSCOcemf/bin/cemf start
To restore a CEMF/Cisco MNM database after you have reinstalled Cisco MNM, refer to the preceding "Backing Up and Restoring the CEMF/CMNM Databases".
Managing Network Devices Over a Slow Link
If you are managing network devices over a slow link (T1 or slower), you might need to alter SNMP parameters used by Cisco MNM for SNMP Get Requests. You can change these parameters for any existing objects by accessing the States dialog. You can also change these parameters in the Advanced tab of the Seed File Deployment dialog.
The default number of SNMP retries is 2. You might need to increase this value when the Cisco MNM workstation is connected to network devices over a slow link.
The default SNMP timeout value is 5000 milliseconds (5 seconds). You may need to increase this value when the Cisco MNM workstation is connected to network devices over a slow link.
Maximizing Logfile Output
By default Cisco MNM logs only warning and error messages. If you want to turn on debug messages in all log files, complete the following steps, as the root user:
Step 1 cd <CEMF Direcory>/bin
Step 2 ./cemf stop
Step 3 cd <CEMF Direcory>/config/init
Step 4 Edit loggercommon.include and add or change the following line:
loggingLevelMask = 12
Step 5 cd <CEMF Direcory>/bin
Step 6 ./cemf start
Step 7 To set the logging level back to warning, add or change the following line:
loggingLevelMask = 10
The following sections explain how to obtain documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following URL:
Translated documentation is available at the following URL:
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped 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 through an annual subscription.
Cisco documentation is available in the following ways:
•Registered Cisco Direct Customers can order Cisco product documentation from the Networking Products MarketPlace:
•Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:
•Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).
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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 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 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 to
•Streamline business processes and improve productivity
•Resolve technical issues with online support
•Download and test software packages
•Order Cisco learning materials and merchandise
•Register for online skill assessment, training, and certification programs
You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the following URL:
Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Inquiries to Cisco TAC are categorized according to the urgency of the issue:
•Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.
•Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
•Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.
•Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.
Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
The Cisco TAC Web Site allows you 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 the following URL:
All customers, partners, and resellers who have a valid Cisco services 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 the following URL to register:
If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL:
If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; 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 will automatically open a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL:
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). In addition, please have available your service agreement number and your product serial number.