01-08 Managing the Message Tracing of the GGSN9811

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8Managing the Message Tracing of theGGSN9811

About This Chapter

The tracing function is used in daily maintenance. You can locate the fault in the service flow

by tracing themessage. After the data is configured, you can enable the tracing function to verify

whether the signaling links are normal, and then locate the fault.

8.1 Creating Message Tracing Tasks

This part describes how to create the message tracing tasks. The tracing management of the local

maintenance terminal (LMT) contains interface tracing and user tracing. The LMT provides

message descriptors to describe the messages. If you double-click a specified message in thebrowsing window, you can query the details of the message. This facilitates the operator to

analyze the tracing message.

8.2 BrowsingTracing Messages Online

This part describes how to browse the tracing messages online. You can browse the tracing

message displayed after the tracing task is created. When browsing the messages online, you

can scroll down the window and browse the message description.

8.3 Saving Tracing Results

This part describes how to save the tracing results locally.

8.4 Stopping/Restarting Tracing Tasks

This part describes how to stop or restart the tracing tasks. When you do not need to trace thetask temporarily, you can stop the tracing task. When you need to trace the task again, you can

restart the tracing task.

8.5 Closing Tracing Tasks

This part describes how to close the tracing tasks. When you do not need to trace the task, you

must close the tracing task to save system resources.

8.6 Browsing Tracing Results Offline

This part describes how to browse the tmf file offline through the trace viewer.

HUAWEI GGSN9811 Gateway GPRS Support Node

Operation Guide 8 Managing the Message Tracing of the GGSN9811

Issue 03 (2008-04-10) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd

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8.1 Creating Message Tracing Tasks

This part describes how to create the message tracing tasks. The tracing management of the local

maintenance terminal (LMT) contains interface tracing and user tracing. The LMT provides

message descriptors to describe the messages. If you double-click a specified message in the

browsing window, you can query the details of the message. This facilitates the operator to

analyze the tracing message.

8.1.1 Creating Interface Tracing Tasks

This part describes how to creating interface tracing tasks.

8.1.2 Creating User Tracing Tasks

User tracing refers to the tracing of the interface message in terms of the mobile station ID

(MSID).

8.1.1 Creating Interface Tracing TasksThis part describes how to creating interface tracing tasks.

Prerequisite

l The local maintenance terminal (LMT) is started.

l The user logs in to the GGSN9811 as an operator with tracing authority.

Context

Interface tracing includes the following tasks:

l Tracing Gn/Gp

l Tracing Ga

l Tracing Gi

l Tracing Go

l Tracing Gy

This section gives an example of creating a Gn/Gp interface tracing task. Refer to this example

to create other tracing tasks.

ProcedureStep 1 Click the Maintenancetab. Then click Interface Trace Taskunder Trace Management, and

select the object to be traced. The Gn/Gp Tracedialog box is displayed, as shown in Figure

8-1.

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Figure 8-1Gn/Gp Interface Trace window

Step 2 Set the fields in the dialog box. Press F1to view the descriptions. The descriptions are listed inTable 8-1.

Table 8-1Parameters for tracing Gn/Gp

Field name Description

Slot Number Slot number of the active SPU.

SGSN IP IP address of the signaling plane of the SGSN.

Message Type PATH: path management message.

TUNNEL: tunnel management message.

MIP: MIP message.

Auto Save l The traced message file is automatically

saved in the trace directory under the

software installation directory.

l The file is named in this format:

OfficeName_TraceType_year-month-

day-hour-minute-second.tmf. For

example,

201_Gn_Gp_2006-07-27-11-22-04.tmf.

l Each file may contain up to 5,000 records.When the number of records exceeds

5,000, the system creates a new file.

Step 3 Click OKto start the tracing task. The message browse window displays the traced signaling inreal time, as shown in Figure 8-2.





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Figure 8-2Message browse window for interface tracing

----End

8.1.2 Creating User Tracing Tasks

User tracing refers to the tracing of the interface message in terms of the mobile station ID

(MSID).

Prerequisite

l The local maintenance terminal (LMT) is started.

l The user logs in to the GGSN9811 as an operator with tracing authority.

Context

Subscriber tracing is performed to trace messages at each interface, based on the IMSI or

MSISDN.

Procedure

Step 1 Click the Maintenancetab. Double-click Trace Management> User Trace Task> UserTrace. The User Tracedialog box is displayed, as shown in Figure 8-3.



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Figure 8-3Setting parameters for subscriber tracing

Step 2 Set the fields in the dialog box. Press F1to view the descriptions of the fields. The descriptionsare listed in Table 8-2.

Table 8-2Descriptions of the fields in User Trace


IMSI/MSISDN IMSI length: 15.

MSISDN length: 16.

You must select either IMSI or MSISDN.

Message Type GTP: GTP_C messages that go between the

online subscribers on the SPU and the SGSN

through the Gn/Gp interface.

AAA: messages that between the online

subscribers on the SPU and the AAA through

the Gi interface.

CAP: Camel intelligent service messages thatgo between the online subscribers on the SPU

and the SCP.

UP: uplink data of the online subscribers on

the SPU. DOWN: downlink data of the online

subscribers on the SPU.

MIP: MIP messages that are sent by the online

subscribers on the SPU through the Gn and

Gi interfaces.





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Auto Save l The traced message file is automatically

saved in the trace directory under the

software installation directory.

l The file is named in this format:

OfficeName_TraceType_year-month-

day-hour-minute-second.tmf. For

example,

201_Gn_Gp_2006-10-29-11-29-30.tmf.

l Each file may contain up to 5,000 records.

When the number of records exceeds

5,000, the system creates a new file.

Step 3 Click OK to start the tracing task. The message browse window displays the traced signaling inreal time, as shown in Figure 8-4.

Figure 8-4Message browse window for subscriber tracing

----End

8.2 Browsing Tracing Messages Online

This part describes how to browse the tracing messages online. You can browse the tracing

message displayed after the tracing task is created. When browsing the messages online, youcan scroll down the window and browse the message description.



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Prerequisite

l The tracing task is created.

l The tracing message is reported.

Procedure

Step 1 Browse the tracing messages in real time. Right-click in the window, then the followingoperations can be performed.

If you select... Then...

Stop Trace Task All the tracing tasks are terminated.

Restart Trace Task Terminated tracing tasks are started again.

Save All Messages... All the tracing messages are saved to a specified

path.

Save Selected Message(s)... Selected tracing messages are saved to a

specified path.

Auto Scroll Messages in the browsing window are refreshed

in real time and scroll up automatically.

Clear Messages All messages in the browsing window are

cleared.

Prompt When Overload Control Occurs Overload control generated on the LM is

prompted.

Close All xxx Trace Tasks All the xxx tracing tasks are closed (xxx

represents the specified tasks).

Property... Properties of the task being traced are displayed.

Step 2 Double-click the message if you want to obtain more details on the message. The MessageBrowserwindow is displayed. Refer to Figure 8-5.





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Figure 8-5Message Browserwindow

NOTE

The window contains two parts, that is, the upper window and the lower window. You can adjust the size

of the window by moving the line in the window. When you select a line in the upper window, the selectedline is in blue. The hexadecimal code specified by the message body is displayed in blue in the lower

window.

----End

8.3 Saving Tracing Results

This part describes how to save the tracing results locally.

Prerequisite

l The tracing task is created.



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l The tracing message is reported.

Context

You can save the tracing results in two ways.

Procedure

l System automatically saving

1. When the tracing task is created, by default, the system automatically saves all the

messages of the tracing task as a tmf file.

By default, the system automatically saves the tracing results toInstallation path

\client\output\GGSN9811\LMT software version\trace. The rule for naming the file

is Office name_Tracing item_year-month-date-hour-minute-second.tmf.

NOTE

You can open the tmf file offline through Trace Viewer. For details, see 8.6 Browsing Tracing

Results Offline.

l Operator manually saving

1. Right-click on the tracing message window. Then, choose Save All MessagesorSave

Selected Message(s).... Alternatively, choose Save All Messagesor Save Selected

Message(s)...in the tracing message window of the trace viewer.

NOTE

l Save All Messages: All the messages displayed in the tracing message window are

dynamically saved in the file.

l Save Selected Message(s)...: Youcan select amessage by clicking. In addition, you can

select multiple messages by using Ctrl+Mouseor Shift+Mouse. If you need to selectconsecutive messages, move the cursor the the end of the messages to be selected, and then

drag the cursor to the desired message.

2. Select a path where the file is to be saved, enter the file name, and select the save type

in the Savedialog box. Table 8-3lists the save types.

Table 8-3Save types

Save Type Description Remarks

File of tracing

messages (*.tmf)

The file can be opened with trace viewer

so that the messages can be browsed

offline. This way to browse the messages

is clear.

It can be used to

find the message

text quickly.

Text file (*.txt)It is used to save the message texts in the

tracing window to the text file.

3. Click Saveto save the file to a specified path.

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8.4 Stopping/Restarting Tracing Tasks

This part describes how to stop or restart the tracing tasks. When you do not need to trace thetask temporarily, you can stop the tracing task. When you need to trace the task again, you can

restart the tracing task.

Prerequisite

The tracing task is created.

Procedure

l Stopping the tracing task

1. Right-click in the tracing message window, and then choose Stop Trace Task.

l Restarting the tracing task

1. Right-click in the tracing message window, and then choose Restart Trace Task.

----End

8.5 Closing Tracing Tasks

This part describes how to close the tracing tasks. When you do not need to trace the task, you

must close the tracing task to save system resources.

Prerequisite

The tracing task is created.

Context

You can close the tracing task in the following ways.

Procedure

l Click at the upper right corner of the tracing message window.

l Right-click in the tracing message window, and then choose Close All xxx Trace Tasks(xxx represents the tracing type such as R3 tracing message).

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8.6 Browsing Tracing Results Offline

This part describes how to browse the tmf file offline through the trace viewer.

Prerequisite

The tracing messages are saved as the tmf file.



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Context

The txt and csv files are available in the specified path. Double-click the file to browse the

messages.

Procedure

Step 1 Choose start> Programs> HUAWEI Local Maintenance Terminal > Trace Vieweron the

LMT. Alternatively, click in toolbar of the Local Maintenance Terminal window.

Step 2 Select the file in the Opendialog box.

Step 3 Click Openor double-click the file. Then, the file is open in the trace viewer window. Refer toFigure 8-6.

Figure 8-6Trace Viewerwindow

Step 4 Double-click the message to obtain more details. Refer to Figure 8-5.

Step 5 Choose File> Openif you want to open other files. Then, choose the file in the Opendialogbox.

Step 6 Right-click inthe Trace Viewerwindow to perform the following operations:


Save All Messages All the messages displayed in the window are saved as tracing

message file (.tmf) or text file (.txt).





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Save Selected Message(s)... Selected messages are saved as either the tmf file or the txt file.

Find Messages to be found are located in the window.

Property... Properties of the specified task are displayed.

Buttons in the title bar Messages in the window can be listed in terms of serial No.,

time, message direction, and message type.

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Operation Guide



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Documents

01-08 Managing the Message Tracing of the GGSN9811