Aviat Networks ECLIPSE EDGE, Руководство пользователя

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22 Aviat Networks
DAC ES Alarms
Dropped Frames Ratio
Ratio of dropped frames to total frames has exceeded threshold. Separate alarms
indicate thresholds exceeded for 10%, 20%, 40% or 80%. This is a warning alarm.
Probable Cause
Inadequate bandwidth on one or both channels.
Recommended Actions
1. Provide increased bandwidth on the affected channel (increase the number of E1/
DS1 circuits used to transport the channel).
2. Use the Rx and Tx count registers in Portal System/Controls to determine which
ports are carrying most traffic, and from this, based on the operational mode
selected in the DAC ES plug-ins screen, determine which channel is primarily
affected (requires additional bandwidth).
3. If traffic requirements have changed since the DAC ES was first configured, also
review port priority selections. When frames are being dropped, it is likely that
traffic assigned on lowest priority ports will be most affected.
Additional Information
When buffer space runs out, frames will be dropped, and a dropped-frame counter
increments to provide the ratio count of dropped frames to total frames.
Link Failure
The DAC ES Ethernet port is down. This is a warning alarm.
Probable Cause
No valid Ethernet framing data received on the port.
Recommended Actions
1. Check the Ethernet connector activity LEDs for the alarmed port.
2. If activity is absent, unplug the RJ-45 port cable and plug it into one of the Ethernet
NMS connectors.
3. If LED activity on the plugged NMS connector is absent, check connected
equipment and cabling.
4. If activity is present (green LED indicates a valid Ethernet connection; orange
flashing indicates Ethernet receive traffic), replace the IDU.
Additional Information
The port Enabled check box in the DAC ES plug-ins screen must be checked to enable
traffic on the port. Only when checked,
and no valid framing data is detected, will this
alarm be raised.
Switch Access Failure
No communications with Ethernet switch. This is a critical alarm.
Probable Cause