FW 07.00.00/HAFM SW 08.06.00 McDATA Sphereon 4300 Fabric Switch Installation and Service Manual (620-000171-010, April 2005)

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McDATA Sphereon 4300 Fabric Switch Installation and Service Manual
The Port Stats page displays traffic and error statistics for one port.
Values update only when the page opens for a selected port or the
user selects Get Port Statistics. The page defaults to port 0. Increment
or decrement the port number displayed (0 through 11 inclusive) by
clicking Fwd>> or <<Back.
The # of Wraps column tracks the number of times the counter wraps
for rapidly-growing statistics. The maximum counter value is 2
32
entries. The page displays the following tables of cumulative port
statistics and error count values for a selected port:
• Traffic statistics - These entries provide information about port
traffic, including:
— Fibre Channel frames received and transmitted.
— Four-byte words received and transmitted.
— Offline sequences received and transmitted.
— Link resets received and transmitted.
— Loop initialization primitives (LIPs) generated and detected.
— Percent link utilization (receive and transmit).
• Error statistics - The Port Stats page displays the following error
statistics for the port:
— Link failures - Link failures are recorded in response to a not
operational sequence (NOS), protocol timeout, or port failure.
— Sync losses - Synchronization losses are detected because an
attached device was reset or disconnected from the port.
— Signal losses - Signal losses are detected because an attached
device was reset or disconnected from the port.
— Primitive sequence errors - Incorrect primitive sequences are
received from an attached device, indicating Fibre Channel
link-level protocol violations.
— 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.