Sun Microsystems StorEdge, Troubleshooting Manual

Page: 159 / 168

Appendix D Converting Sun FC Switches Fibre Channel Addresses 141
In both of these outputs, a Fibre Channel (FC) address appears (the six-digit number,
1084e4
for example). The FC address potentially provides useful troubleshooting
information. The key to this is knowing how the Sun FC switch encodes the
addresses.
For a Qlogic switch, the address must first be changed from Hex to a 24-bit binary
number.
Example
1084e4
translates into hexadecimal as
100001000010011100100
. (The calculator
removes the first 3 bits because they were zeros. The number is actually
000100001000010011100100
, which is the number used in this example).
000100001000010011100100
is the 24-bit binary representation of
1084e4
.
Qlogic encodes this number in the following way:
■
The AL_PA will be zero if the device is a full fabric device, otherwise, it will be
the AL_PA of the loop device.
■
StorEdge Network Fibre Channel Switches have 2 or 4 ASICS (2 on the 8port
switch, 4 on the 16port switch). These ASICs are numbered from 0-3.
■
Each ASIC has 4 ports, numbered 0-3.
■
The numbering on the switch faceplate goes from 1-8 or 1-16.
■
So, ASIC 0, port 0 is actually Port 1 if you were looking at the switch. ASIC 3, port
3 would be Port 16 if you were looking at the switch.
Bits 0-3
Fabric ID
Bits 4-9
Chassis ID
Bits 10-13
ASIC
Bits 14-15
Port
Bits 16-23
AL_PA