director 2/64 service manual

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Repair Information
Figure 3–9: Node List View
• Port WWN–The eight-byte (16-digit) world-wide name (WWN) assigned to the
port or Fibre Channel interface installed on the attached device.
— If a nickname is not assigned to the WWN, the WWN is prefixed by the
device manufacturer’s name.
— If a nickname is assigned to the WWN, the nickname displays in place of the
WWN.
• BB_Credit–The buffer-to-buffer credit (BB_Credit) value assigned to a port
attached to a device. The value (normally 1 through 16 inclusive) determines the
frame buffers available for the port. Ports configured for extended distance
operation are assigned a BB_Credit value of 60.
Performance View
The Performance View displays statistical information about the performance of ports.
The information is useful to maintenance personnel for fault isolating port problems.
For information about the Performance View, see Performing Port Diagnostics on
page 3–19.