Specifications

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166
#1: If a hyphen (-) is displayed, reconnect the cable.
#2: A hyphen (
-) is displayed if the status of the transceiver is not connect or not support.
If a hyphen (
-) is displayed while the transceiver is being connected, re-execute the
command, or reconnect the cable. Information is displayed when you re-execute the
command.
#3: If the optical power is outside the range from −40 to 8.2 dBm, a hyphen (
-) is displayed.
#4: An error might arise depending on the ambient conditions. For checking the correct
value, use an optical power meter.
Impact on communication
None
Response messages
None
Notes
 The displayed number of discarded packets is the total of the values for the items
listed in the following table.
Table 13-9 Statistical items used for calculating the number of discarded packets
Port Statistical item
Sending Receiving
Ethernet Late collision
Excessive collisions
Excessive deferral
CRC errors
Alignment
Fragments
Jabber
Symbol errors
Short frames
Long frames
 The statistic counter is cleared in the following cases:
 When the
clear counters command is executed
 When a device hardware failure occurs
 If you insert an unsupported transceiver in the Switch, operation is not guaranteed.