Q：What logs do I need to collect for different faults (U1900 series)?
A：The LMT for the U1900 allows you to collect the Fault Information and allows you to collect the Fault Information based on the fault category.
Fault Information Collection Rules
Table 1-1 Fault Information Collection Rules
|
Information |
When to Collect |
|
Registration faults |
Collecting SIP message. |
|
Call faults |
Collecting Call Logs Generated When a Fault Occurs. |
|
system restart and breakdown faults |
Obtaining the Black Box to check the operation logs |
Collecting Call Logs Generated When a Fault Occurs
To locate a voice fault, engineers often need to check call logs. Therefore, you need to collect call logs.
Step 1 Log in to the LMT and enter the Config mode.
Step 2 Enable the call log function by referring to the following figure.
Figure 1-1 Enabling the call log function
Table 1-2 Recommended modules for commom fault scenarios
|
Scenario |
Module |
|
E1 trunk-based incoming and outgoing call failures |
lService modules: RM, CM, CCM, and USAM lTrunk modules: PRI, BRI, ISUP, TUP, R2, QSIG, and SIP (Select trunk modules according to the trunk types actually used.) lSIP signaling module |
|
AT0 trunk faults |
lService modules: RM, CM, CCM, and USAM lTrunk module: AT0 lSIP signaling module |
|
SIP trunk-based incoming and outgoing call failures |
lService modules: CCM and USAM lTrunk modules: SIPTK and SIP lSIP signaling module |
|
User number service faults |
lService modules: CCM and USAM lTrunk module: SIP lSIP signaling module |
|
Automatic switchboard faults |
lService modules: VU, RM, CM, CCM, and USAM lTrunk modules: PRI, BRI, ISUP, TUP, R2, and SIP (Select trunk modules according to the trunk types actually used.) lSIP signaling module |
|
One-way audio fault |
lService modules: RM, CM, CCM, and USAM lTrunk modules: PRI, BRI, ISUP, TUP, R2, and SIP (Select trunk modules according to the trunk types actually used.) lSIP signaling module |
Step 3 Repeat the call operation performed when the fault occurs.
The system automatically obtains call logs.
Step 4 Click Open and send the log files in the directory to engineers of the service provider.
----End
Obtaining the Black Box
The operation logs cached in a U1900 series unified gateway host are stored in the black box. You can view the black box to check the operation logs. A black box is a .dat file that is named by the IP address of the U1900 and file generation time, and saved in the flash. The file records call stack information that was generated before a system restarts and can be used to locate system restart and breakdown faults.
Step 1 Run the TFTP server (using the 3CDaemon.exe tool is recommended) and specify a TFTP path.
Step 2 Change the host IP address of the U1900 to the IP address of the TFTP server, for example 192.168.100.2.
config system hostip 192.168.100.2
Step 3 Run the following command to upload the black box. In the command, x indicates the slot number.
config upload file lastwords slotx
If active and standby boards are deployed, you need to collect the black box generated by both boards. Set the slot number (x) to that of the active board and standby board respectively.
Table 1-3
|
Collected Information |
Command |
|
Displays information about task switching that is implemented after the last watchdog resetting. |
debug print task switch info |
|
Displays exception information about the last error on the main control board. |
debug show last exception information boardno<boardno> |
|
Displays information about the last stack used by the root task. |
debug print stack content taskflag root place backup |
|
Displays information about the last stack used by the cli task. |
debug print stack content taskflag cli place backup |
|
Displays information about the stack used by the exception. |
debug print stack content taskflag exc place backup |
|
Displays information about the stack used by the reboot task. |
debug print stack content taskflag reboot place backup |
|
Displays information about the stack used by the task where services are interrupted. |
debug print stack content taskflag int place backup |
|
Displays cli and omu task records in the last system running. |
debug print cli history info place backup |
|
Displays system restart records. |
show system reboot info |
----End
Collecting Information with One Click
The LMT for the U1900 allows you to collect the system information, fault information, black box information, operation logs, run logs, and alarm information with one click.
Step 1 Log in to the LMT and enter the config mode.
Step 2 Choose Information Collect > Diagnostic Information Collection.
Step 3 Select the start time and end time of the fault, set the path for saving files, and click Collect.
Figure 1-2 One-click information collection
Step 4 Click Open and send the log files in the directory to engineers of the service provider.
----End
For details about how to collect fault information on the U1900, please refer to http://support.huawei.com/hedex/hdx.do?docid=EDOC1000108680&id=ipt_mntg_00043_3&text=Collecting%252520Fault%252520Information%252520on%252520the%252520U1900&lang=en.
