Adsl Subscribers Cannot Be Authenticated Due To High Temperature - Huawei MA5600 Manual

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ADSL Subscribers cannot be authenticated due to high temperature

Title:
ADSL Subscribers cannot be authenticated due to high temperature
ID:
SE0000343846
Update time: 2008-11-25 14:04:19
Author: 00701219Khurram Abbasi
Product Integrated Acsess
Family:
Fault Type: UA5000 Broadband Service
Keywords: IPMA cannot ping BRAS due to EFS
Digest: IPMA cannot ping BRAS due to EFS
Phenomenon
IPMA board can not connect to BRAS. Physical link connectivity is OK and port status is online.
Description: BRAS can not be accessed and all subscriber services are broken
Service connectivity is as follows
UA5000 (IPMA) --> EFS board, FE port (Metro1000 SDH) --> EFS board (Metro3000) --> EGS
2 board, GE port (Metro5000) --> BRAS (GE port)
Alarm SDH Alarms,
Information:
-----------
FAN Block Alarm at Merto1000 SDH
Board Bad alarm at EFS card.
BMS Alarm,
---------------
IPMA card is offline
IPMA alarm,
----------------
IPMA cannot ping to BRAS.
Cause Excess dust blockage caused SDH internal cooling fan faulty which was not timely reported and r
Analysis:
esolved which resilts EFS card software hanged due to very high temperature.
Handling - Check the BRAS configuration by remote login and no issue found.
Process: - Check the cable connection between UA5000 and Metro1000V3 SDH. Found OK.
- Check the configuration of UA5000. Found OK.
- Check the port status of UA5000. Observed OK.
- Ask Transmission engineer to check the transmission configuration. Transmission engineer repo
rted that all service configuration is ok.
- Physically checked the SDH and felt very high temperature of SDH and its cards panel.
- Ask transmission engineer to check card health. High temperature alarm found at EFS card and
SDH.
- removed the SDH on transmission engineer instructions and removed the EFS card.
- EFS card was extremly hot. We keep it under room temperature for half an hour and let its temp
erature normalized.
- Also removed the fans plate of SDH and cleaned. Reinstall the fan flate and found that 2 out of t
hree fans started working.
- Installed the EFS card when it cooled to normal temperature and ask Transmission engineer to c
heck EFS card. He reported that card is normal.
- Check the IPMA card and ping the BRAS, BRAS is successfully connected.
- Check the subscribers state, subscribers are using ADSL service smoothly.
Suggestions
- SDH FAN alarms should not be neglected. It can be service effecting, if ignored. Also, it can da
and summary: mage the cards as well.
- Temperature alarms of equipments should also not ignored.
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Chapter 4 UA5000 Broadband Service
Product: UA5000