Brocade TurboIron 24X Series Configuration Guide - Manual (Page 268)

234 Brocade TurboIron 24X Series Configuration Guide
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Basic management
Viewing STP statistics
You can view a summary of STP statistics for Layer 2 Switches and Layer 3 Switches. STP statistics
are by default polled every 10 seconds.
To view spanning tree statistics, enter the show span command. To view STP statistics for a VLAN,
enter the span vlan command.
Clearing statistics
You can clear statistics for many parameters with the clear option.
CRC The total number of packets received for which all of the following was true:
•
The data length was between 64 bytes and the maximum allowable frame
size.
•
No Collision or Late Collision was detected.
•
The CRC was invalid.
Collisions The total number of packets received in which a Collision event was detected.
InErrors The total number of packets received that had Alignment errors or phy errors.
LateCollisions The total number of packets received in which a Collision event was detected,
but for which a receive error (Rx Error) event was not detected.
InGiantPkts The total number of packets for which all of the following was true:
•
The data length was longer than the maximum allowable frame size.
•
No Rx Error was detected.
NOTE: Packets are counted for this statistic regardless of whether the CRC is
valid or invalid.
InShortPkts The total number of packets received for which all of the following was true:
•
The data length was less than 64 bytes.
•
No Rx Error was detected.
•
No Collision or Late Collision was detected.
NOTE: Packets are counted for this statistic regardless of whether the CRC is
valid or invalid.
InJabber The total number of packets received for which all of the following was true:
•
The data length was longer than the maximum allowable frame size.
•
No Rx Error was detected.
•
The CRC was invalid.
InFlowCtrlPkts The total number of flow control packets received.
OutFlowCtrlPkts The total number of flow control packets transmitted.
InBitsPerSec The number of bits received per second.
OutBitsPerSec The number of bits sent per second.
InPktsPerSec The number of packets received per second.
OutPktsPerSec The number of packets sent per second.
InUtilization The percentage of the port bandwidth used by received traffic.
OutUtilization The percentage of the port bandwidth used by sent traffic.
TABLE 47 Port statistics (Continued)
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