ECI XDM-300, Installation And Maintenance Manual

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XDM-300 Installation and
Maintenance Manual Maintenance
417006-2311-0H3-A00 ECI Telecom Ltd. Proprietary 4-19
Troubleshooting Management
Communication
When the management station cannot manage an XDM-300 shelf, use the
following table to identify the cause of the problem.
N
OTE
:
Whenever you detect problems during
commissioning tests and when troubleshooting a new
installation, do not overlook the possibility of configuration
and/or provisioning errors. Under such circumstances, always
start the troubleshooting procedures by reviewing all
equipment configuration and provisioning parameters against
the original network design, and correct as necessary.
Table 4-11: Troubleshooting management communication
No. Symptoms Probable
cause Corrective actions
Defective
card/module
in
management
traffic path 1. Check for fault indications on the cards processing the
management communication (see General troubleshooting
procedures for cards/modules (on page
4-14 )).
2.
Force switching to the protection path and reset each
component. Use the results of the BIT test to identify the
faulty component.
Problem in
transmission
path 1. Use the network and site documentation to identify the path
of the management communication to the corresponding
XDM shelf and all the related optical components.
2. Use the results of the commissioning tests as a reference for
the required signal levels, and make measurements of
current levels at all the relevant monitoring points through
the management.
3. Compare the reference levels with the measured values; a
significant discrepancy may point to the failed component
(for example, low transmit level, excessive fiber
attenuation due to physical damage, and so on).
1 Problems in
management
traffic path
Other
problems Replace suspected components in the following sequence:
1. Hubs and Ethernet cables used for management traffic
2. ECU300/ECU300-F
3. MXC300