HP StorageWorks 2/8-EL SAN Switch 2/8 V3.1.x - Installation Guide - Page 61
Important Information on Setting the Core PID Format, How to Check the Current Core PID Format
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Installing the SAN Switch 2/8 Important Information on Setting the Core PID Format The switch you have purchased may require a change to the configuration setting known as the Core PID format. A PID format is one of two addressing mechanisms used in Fibre Channel. The Core PID format is analogous to specifying the physical switch and port a device is attached to in data networks. It is not analogous to an IP address. PID formats are assigned by a Fibre Channel switch when a device logs into the fabric. An example PID might look like this: 011F00 For a SAN to work correctly, all HP switches must have the same Core PID format setting, either 0 or 1. If a switch is introduced to an existing SAN with a Core PID format setting that differs from the PID format setting in the SAN, the switch will segment. In new installations, where both edge and the Core Switch 2/64 reside, you must verify that the edge switch (for example, SAN Switch 2/8) Core PID format matches the Core switch's PID format (always 1), before connecting to the SAN. Note: If you are in the process of creating a new SAN, set the Core PID format to 1, if possible. How to Check the Current Core PID Format To determine a switch's current Core PID format, connect directly to a switch in your SAN and complete the following steps via a telnet session, or the Serial cable supplied with the switch. 1. Type configShow and press Enter. 2. About 15 lines down (press Enter to display more information on the page), locate the following line: fabric.ops.mode.pidFormat: [1 or 0] Note: In the above example, the Core PID format is 1 or 0, determined by the number displayed in the brackets. SAN Switch 2/8 Version 3.1.x Installation Guide 61