McDATA Sphereon 4500 - Manual (Page 88)

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2-32 McDATA® Sphereon™ 4500 Fabric Switch Product Manager User Manual
Monitoring and Managing the Switch
Class 2 Statistics
The Class 2 Statistics table includes:
• Received Frames
The number of Class 2 frames received by this F_Port from its
attached N_Port.
• Busied Frames
The number of F_BSY frames generated by this F_Port against
Class 2 frames. This can occur if frames are received before the
switch completes initialization or if the switch is servicing so
many requests that it can not process a new request. The port
generates frames if the switch is not ready to accept commands.
This may indicate temporary congestion.
• Rejected Frames
The number of F_RJT frames generated by this F_Port against
Class 2 frames.
These frames usually occur because of attached device errors. The
device is expected to correct the error based on the reject code,
then retry its request. If the device is able to recover, there is no
cause for concern. If not, further troubleshooting may be
necessary. There are no thresholds for this value. Typically, this
occurs because the destination is not available due to the device’s
action.
• Four Byte Words Received
The number of four-byte words received.
• Four Byte Words Transmitted
The number of four-byte words transmitted.
Class 3 Statistics
The Class 3 Statistics table includes:
• Received Frames
The number of Class 3 frames received by this F_Port from its
attached N_Port.
• Discarded Frames
The number of Class 3 frames discarded, including multicast
frames with bad D_IDs.