Omni-Path Switches
Intel
®
Omni-Path Fabric Switches
Installation Guide May 2016
64 Doc. No.: H76456Rev 3.0US
2.8.1.3.4 FM Switch
On an unmanaged switch the FM Switch LED is used to restrict whether the end-node
attached to a switch port is allowed to source Fabric Manager-related packets.
The user activates the LED using a small, straight instrument (e.g., a standard-size
paper clip).
Figure 50. Activating the FM Enable Switch LED
The FM Enable Switch is used as follows:
Note: Actions take place approximately 1 second after releasing the button.
• Pressing the button for 4 seconds does a “Restore Factory Defaults” and reboots
the ASIC
• Pressing the button for 2 seconds (and then releasing) puts the “FM control button
persistent state” in configuration mode
— The FM enabled LED will blink “n” times, where “n” is the current state value
plus 1
— Pressing (and releasing) the button once for less than 2 seconds advances the
FM control persistent state by 1 (round-robin), and then it returns to step 1
(i.e., blinking the FM enabled LED)
— Pressing the button for 2 seconds leaves the configuration state, and saves the
FM control button state persistently, restoring the FM enabled LED to the
proper value