FW 07.00.00/HAFM SW 08.06.00 McDATA Sphereon 4500 Fabric Switch Installation and Service Manual (620-000159-320, April 2005)

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McDATA Sphereon 4500 Fabric Switch Installation and Service Manual
• Class 3 statistics - These entries provide information about Class
3 traffic, including:
— Class 3 frames received and transmitted.
— Four-byte words received and transmitted.
— Discarded frames.
• Error statistics - The Performance View displays the following
error statistics for the port:
— Link failures - Link failures are recorded in response to an
NOS, protocol timeout, or port failure. At the Hardware View, a
yellow triangle appears to indicate a link incident, or a
blinking red and yellow diamond appears to indicate a port
failure.
— Sync losses - Synchronization losses are detected because an
attached device was reset or disconnected from the port. At
the Hardware View, a yellow triangle appears to indicate a link
incident.
— Signal losses - Signal losses are detected because an attached
device was reset or disconnected from the port. At the
Hardware View, a yellow triangle appears to indicate a link
incident.
— Primitive sequence errors - Incorrect primitive sequences are
received from an attached device, indicating Fibre Channel
link-level protocol violations. At the Hardware View, a yellow
triangle appears to indicate a link incident.
— Discarded frames - Received frames could not be routed and
were discarded because the frame timed out (insufficient
buffer-to-buffer credit) or the destination device was not
logged into the switch.
— Invalid transmission words - Several transmission words
were received with encoding errors, indicating an attached
device is not operating in conformance with the Fibre Channel
specification.
— CRC errors - Received frames failed CRC validation,
indicating the frames arrived at the switch port corrupted.
Frame corruption may be caused by device disconnection, an
optical transceiver failure at the device, a bad fiber-optic cable,
or a poor cable connection.