IBM TotalStorage SAN140M, Installation And Service Manual

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161 Chapter 4: Repair information
• Interval - The time interval during which the throughput is
measured and an alert can generate. This is set through the
Configure Threshold Alerts dialog box.
Open trunking log
The Open Trunking Log records ISL congestion events that cause Fibre
Channel traffic to be routed through an alternate ISL. Entries reflect
the traffic re-route status at the director.
The log describes:
• Date/Time - The date and time the re-route action occurred.
•
Receive Port -
The director port number (decimal) used for
receiving Fibre Channel traffic after the re-route action.
• Target Domain - The domain ID (decimal) of the target device to
which Fibre Channel traffic from the director was rerouted.
• Old Exit Port - The director port number (decimal) used for
transmitting Fibre Channel traffic before the re-route action.
• New Exit Port - The director port number (decimal) used for
transmitting Fibre Channel traffic after the re-route action.
Embedded port
log
The Embedded Port Log records all Fibre Channel frames transmitted
through the product embedded port, including Class F traffic, fabric
logins, state change notifications, and exception frames. The
information is useful for Fibre Channel frame debugging (usually
performed by second-level support).
The log describes:
• Date/Time - The date and time frame was transmitted through
the embedded port.
• Port - The Fibre Channel port number (decimal) transmitting
frame through the embedded port.
• Direction - The Fibre Channel frame direction (In or Out).
• Frame Header - 24-byte frame header (hexadecimal).
• Length - The size of frame payload in bytes.
• Payload - First 32 bytes of frame payload (hexadecimal).
• SOF - The start of frame character (hexadecimal).
• EOF - The end of frame character (hexadecimal).