6600 Leds - HP ProCurve 6600 Switch Series Technical Overview

switches would more likely have their network ports facing toward the back (hot aisle) of the cabinet to facilitate
server connectivity . With this intention, the default configuration for the command is, "Power-to-Port", so the
"fan-pref-airflow-dir" command will not show up in the configuration file—it is the default .
If the user intends to change the airflow so that the preferred direction is Ethernet ports facing the cold aisle,
then in the configuration file the use should change the preferred direction to be port to power .
Upon change, the user would see:
» Log Entry/Syslog event
» And the "*" and message in the "show system fans" output
If the physical setup of the fans did not match this configured parameter—that is, it is there so that if someone
forgot to reverse the fans and you configured this preference, the user would receive a warning .
If everything matched properly (as they would from the factory), the output of the "show system fans" would
simply be as follows, with no warnings or messages:
ProCurve Switch 6600ml-24G#
Fan Information:
Num State
Sys-1 Fan Ok
ProCurve Switch 6600ml-24G# sh
Preferred fan airflow direction: Power To Port
Imagine if someone wanted their ports mounted in the front/cold aisle and they had a warranty replacement
of the fan tray—and they forgot to reverse the fans . This event would pop up because the user had configured
the 6600 switch with a power-to-port direction (that is, the air is pulled in from the back of the unit [power], and
ejected out of the front [the ports]) . In this instance, the user would receive a warning .
The SNMP MIB object to manipulate the setting of the "Preferred Fan Direction" is:
hpicfDcFan .mib –> hpicfFanUserPrefAirflowDir

6600 LEDs

The LEDs on the 6600 switch are grouped in two columns:
• One set to indicate the status of system components (power supplies, temperature, fan tray, and so on)
• One set to indicate the switch state (Active, Standby, or Down)
Locator LED
The Locator function is enabled through the following CLI command:
ProCurve Switch 6600ml-24G# chassislocate ?
blink Blink the chassis locate led (default 30 minutes).
off Turn the chassis locate led off.
on Turn the chassis locate led on (default 30 minutes).
ProCurve Switch 6600ml-24G# chassislocate blink ?
<1-1440> Number of minutes duration (default 30).
<cr>
By indicating a number N after either the "blink" or "on" parameter, the locator LED will extinguish
automatically after N minutes . Without specifying a value, the default is 30 minutes .
The LED indicators are covered in more detail in "Appendix G: troubleshooting" later in this document .
sh system fans
Airflow Direction
Power To Port
system fan-pref-airflow-dir
Failures
0
13