Table Of Contents
Release Notes for the Cisco Mobile Wireless Transport Manager 6.0
Date: March 8, 2007
These release notes describe the caveats for the Cisco Mobile Wireless Transport Manager (MWTM), Release 6.0. These release notes accompany the:
•User Guide for the Cisco Mobile Wireless Transport Manager 6.0
•Installation Guide for the Cisco Mobile Wireless Transport Manager 6.0
•OSS Integration Guide for the Cisco Mobile Wireless Transport Manager 6.0
Note You can access the most current Cisco documentation, including these release notes, online at:
For the latest MWTM information and software updates, go to http://www.cisco.com/go/mwtm.
These release notes contain:
These release notes describe caveats, known bugs, and other important information for installing and using MWTM 6.0.
What's New in MWTM 6.0
The MWTM 6.0 release provides an upgrade path for existing users of the:
•Signaling Gateway Manager (SGM) 4.1
•Mobile Wireless Transport Manager (MWTM) 5.0
The MWTM 6.0 release provides these new features:
For a detailed list of features that the MWTM 6.0 release provides, see the "Overview" chapter of the User Guide for the Cisco Mobile Wireless Transport Manager 6.0.
Limitations and Restrictions
This section describes limitations and restrictions that are associated with the MWTM.
When using the MWTM provisioning feature to modify the management interface, sometimes the operation fails with this message:No prompt response
This response can occur when changing the duplex or speed attributes for the Ethernet interface. The response can also occur for other interface attributes that affect IP connectivity between the MWTM and the device.
The default setting for a provisioning operation timeout is 50 seconds. As a workaround, the system administrator can increase the TGS_OP_TIMEOUT attribute in the System.properties file to a higher value. You must restart the MWTM server for this change to take effect.
The MWTM Node > Home Page right-click menu option does not work correctly for the following SSH-enabled IP Transfer Point (ITP) nodes:
The browser launches, as expected, but the user is not prompted for login information.
Note This limitation exists for any ITP node running the 12.2(x) IOS with SSH enabled.
MWTM Telnet Proxy
If you enable the MWTM Telnet proxy (mwtm tnproxy enable command), you cannot use an external Telnet program to connect to a node from the MWTM client; you must use the Telnet program that comes with the MWTM.
To use an external Telnet program, you must disable the MWTM Telnet proxy (mwtm tnproxy disable command).
Open MWTM Caveats
This section describes caveats that exist in the MWTM 6.0 software:
Symptom If a command with INSTANCE_NUMBER is included in the UserCommands.ts file, the instance number will appear on all nodes in the GUI. If you run this command on a node that does not have multi-instance enabled, it fails.
Workaround If you have a network with both single and multi-instance nodes, you must configure a separate set of troubleshooting commands for each node type in the UserCommands.ts file. Do this by grouping the commands for each type under a separate category.
Symptom The preferences dialog of the MWTM client interface allows you to customize the way that data series appear in charts. You can specify series color, line style, and symbol style. However, symbol style and line style preferences do not work when displaying real-time charts for MSU rates and for RAN backhauls and shorthauls.
Symptom Credentials for a node are associated with a unique IP address. If a node has more than one accessible IP address, functions that require credentials might not resolve to a credential based on the selected IP address, and the requested function would fail. The MWTM functions that require credentials include:
•Discovery of ONS and RAN_SVC nodes
•Route and Global Title Translation (GTT) table deployment
Conditions Nodes with multiple, accessible IP addresses with credentials set for a subset of those IP addresses.
Workaround Specify credentials for all accessible IP addresses for a node.
Symptom In various GUI and web pages, simple text fields might contain unprintable characters. An example is the Model Name PID field for a RAN service (RAN_SVC) card in an ONS chassis.
Conditions Some RAN_SVC cards in an ONS chassis can exhibit this behavior.
Workaround None. This is a cosmetic problem and does not affect functionality.
Symptom The following exception with corresponding stacktrace can occur. The MWTM captures this exception in the sgmConsoleLog.txt file:java.net.SocketException: Broken pipe
Conditions This exception can occur when users access the MWTM web interface and frequently abort connections while the server is under heavy load (for example, during discovery). Pressing the Stop button on the web browser or navigating to a different web page before the current page finishes loading can cause this exception to occur.
Note The root cause of this condition is an internal bug in the Tomcat web application that ships with this release of the MWTM.
Workaround None, but you can safely avoid these log messages.
Symptom The following error messages may appear when performing these operations:
Conditions The error messages occur when ITP linkset, AS, and ASP names contain a colon [:].
Workaround Remove the colon [:] from ITP linkset, AS, and ASP names.
Symptom When provisioning ITP nodes from the Provision tab of the web interface, some provisioning operations might fail on the node with these symptoms and conditions:
Workaround None. The user must know the ITP card information and specify correct values in the provisioning request.
Symptom Sometimes when using the client on a Solaris multi-processor computer, an exception occurs when the topology window is open and you are manipulating views.
Workaround Close the topology window, then reopen it.
Symptom The RAN-O backhaul performance charts can show incorrect % Utilization (Y axis, on the right side of the chart).
Conditions RAN-O backhaul interfaces with asymmetric link speeds or different physical interfaces for send and receive traffic. For example, you might observe this symptom if the backhaul uses Digital Subscriber Line (DSL) or cable media.
Workaround Use the Y axis on the left side of the chart, which shows backhaul utilization in bits or bytes per second.
Symptom Loading the GTT table from an ITP might fail with this error message:nameFormatErr
Conditions The ITP network name contains a space ( ) character.
Workaround Remove the space ( ) character from the ITP network name, or use an underscore (_) or a hyphen (-) instead of the space ( ).
Symptom When you select a shorthaul in the navigation tree of the MWTM web interface, and click the Errors tab, the total number of errors displayed might not equal the sum of the individual errors because of rounding errors. The total number of errors might be one or two counts more or less than the sum of the individual errors.
Conditions You have enabled RAN-O statistics collection.
Workaround None. These minor mismatches will cancel each other over a few adjacent report intervals. The mismatches do not accumulate over a period of time.
Open Device Caveats
This section documents caveats associated with the devices that the MWTM manages. These caveats can affect the capability of the MWTM to manage the associated features. Follow the guidelines in the workarounds for these defects.
Symptom When you unconfigure Preventive Cyclic Retransmission (PCR) from an MTP2 link on an ITP device, the device incorrectly retains tuning parameters, such as n1 and n2, in the running configuration.
Conditions You configure PCR and set tuning parameters with values other than default values.
Workaround Unconfigure the tuned parameter first. Then unconfigure PCR.
Symptom When you unconfigure a tuned parameter for a link that belongs to a linkset with a configured profile, the default value for the timer is incorrectly restored instead of the profile timer value.
Conditions The cs7 profile is overriding the profile value.
Workaround Unconfigure and reconfigure the profile for the linkset. This action should restore the profile value to all links.
Symptom When you configure the following parameter for an SCTP link:retransmit-cwnd-rate <rate> sctp-fast-retransmit
the sctp-fast-retransmit portion is not saved in the configuration, and is ignored at the next reload.
Conditions Tune the sctp-fast-retransmit parameter for retransmit-cwnd-rate.
Workaround Reconfigure the parameter after reloading the device.
Symptom The Management Information Base (MIB) ifTable does not contain T1/E1 controllers for the T1/E1 controllers on the Cisco 2600 WIC card.
Conditions The Cisco 2600 with a T1 or E1 WIC card running IOS 12.4(11)SW.
Workaround None. You cannot use the MWTM to:
•Show T1/E1 controllers on the Cisco 2600 running IOS 12.4(11)SW.
•Provision T1/E1 controllers or channelized serial interfaces on the Cisco 2600 running IOS 12.4(11)SW.
Symptom The MWTM login credentials might not work if you run the no enable secret command on the active RAN Service (RAN SVC) Module.
Conditions During failover, the running configuration on the active RAN service card merges with the RAN protection card. As a result, any baseline configuration command that exists on the protection card but not on the active card will be applied.
Workaround For all RAN service cards:
•Apply the enable-secret configuration option.
•Define these credentials in the MWTM.
Use this document in conjunction with the following documents:
•Installation Guide for the Cisco Mobile Wireless Transport Manager 6.0
•User Guide for the Cisco Mobile Wireless Transport Manager 6.0
•OSS Integration Guide for the Cisco Mobile Wireless Transport Manager 6.0
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This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.
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