Appendix B Hexadecimal; Example Of Hexadecimal Triplet Conversion - Brocade Communications Systems 8 Troubleshooting And Diagnostics Manual

Hexadecimal
Hexadecimal, or simply hex, is a numeral system with a base of 16, usually written using unique
symbols 0–9 and A–F, or a–f. Its primary purpose is to represent the binary code that computers
interpret and represent in a format easier for humans to read. It acts as a form of shorthand, in
which one hexadecimal digit stands in place of four binary bits. For example, the decimal numeral
79, whose binary representation is 01001111, is 4F (or 4f) in hexadecimal (4 = 0100, F = 1111).
Hexadecimal numbers can have either an 0x prefix or an h suffix. For example, 0xFFFFFA is the
same address as FFFFFAh. This type of address is called a hex triplet. Fibre Channel uses
hexadecimal notation in hex triplets to specify well-known addresses and port IDs.

Example of hexadecimal triplet conversion

Notice the PID in the nsshow output is in hexadecimal.
Switch:admin> nsshow
{
Type Pid
N
The Local Name Server has 1 entry }
1. Separate the triplets: 61 06 00
2. Convert each hexadecimal value to a decimal representation:
Fabric OS Troubleshooting and Diagnostics Guide
53-1001769-01
COS PortName
610600; 2,3;10:00:00:00:c9:29:b3:84;20:00:00:00:c9:29:b3:84; na
FC4s: FCP
NodeSymb: [36] "Emulex LP9002 FV3.90A7
Fabric Port Name: 20:08:00:05:1e:01:23:e0
Permanent Port Name: 10:00:00:00:c9:29:b3:84
Port Index: 6
Share Area: No
Device Shared in Other AD: No
Redirect: No
61 = Domain ID = 97
06 = Area (port number) = 06
00 = Port (AL_PA) = 0 (not used in this instance, but is used in loop, NPIV, and Access Gateway
devices)
Result: hexadecimal triplet 610600 = decimal triplet 97,06,00
NodeName
DV5-5.10A10 "
Appendix
B
TTL(sec)
109