The General Diagnostic Screen - ZyXEL Communications P-870HN-5xb User Manual

Chapter 26 Diagnostic
• Loopback test - checks if the MEP port receives its Loop Back Response (LBR)
from its target after it sends the Loop Back Message (LBM). If no response is
received, there might be a connectivity fault between them.
• Link trace test - provides additional connectivity fault analysis to get more
information on where the fault is. If an MEP port does not respond to the source
MEP, this may indicate a fault. Administrators can take further action to check
and resume services from the fault according to the line connectivity status
report.

26.3 The General Diagnostic Screen

Click Maintenance > Diagnostic to open the screen shown next. Ping and
traceroute help check availability of remote hosts and also help troubleshoot
network or Internet connections.
Figure 153 Maintenance > Diagnostic > General
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P-870HN-5xb User's Guide