Chapter 15. Diagnostics
Vol. IV-15-32 Alcatel-Lucent
• The errors detected by the monitoring process are circuit errors. That is, they
may have been generated by any device within the circuit, which includes all
upstream or downstream devices from the DAC 16x/4x.
• Separate monitoring options are provided for upstream and downstream traffic
directions.
• The Line Facing option monitors CRC error counts on the E1 stream from
the trib interface.
• The Bus Facing option monitors counts on the E1 stream from a link (RAC
or other DAC) via the backplane bus.
• Traffic on the selected trib is not affected.
Figure 15-12 shows a typical trib error performance screen.
Figure 15-12. Tributary Performance Monitoring Screen
Item Description
1 Click to enable tributary performance monitoring.
2 Select a trib and a monitored direction. Line facing monitors error performance
on the E1 stream from the trib interface. Bus facing is from the backplane bus.
1
2 3
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