Huawei SmartAX MA5612 Maintenance Manual page 57

SmartAX MA5612 Multi-service Access Module
Maintenance Guide
Fault Location
Use the following guidelines to locate the fault.
Fault Location
User terminal
Link between
user terminal and
MA5612
MA5612
Upper layer
broadband
remote access
server (BRAS)
To facilitate fault report, save the results of the following steps.
Procedure
Step 1 Check the user terminal.
1.
Issue 01 (2012-07-25)
Location Analysis
The fault does not recur when the
user's PC is replaced.
The fault does not recur when the
user terminal is replaced.
Packet loss on the subscriber line
is severe.
The Internet service on a single
port is frequently interrupted.
Internet services on all MA5612
ports are frequently interrupted.
Internet services of all users
connected to the BRAS are
frequently interrupted.
CAUTION
Replace the user's PC and then check whether Internet service is restored.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Troubleshooting Services Transmitted Through a GE Port
Possible Causes
The user's PC is infected with
viruses or the network interface card
(NIC) in the user's PC is faulty.
The user terminal is faulty.
l The quality of the subscriber line
l The subscriber line is old.
l The subscriber line connectors
l There is a strong source of
l The user port is faulty.
l The quality of the subscriber line
l The MA5612 is faulty.
l There is a strong source of
l The MAC address has drifted
The BRAS MAC address has drifted
between MA5612 ports
is deteriorated.
are loose.
interference around the user.
is deteriorated and the packet
loss on the subscriber line is
severe.
interference around the
MA5612.
between MA5612 ports.
48