Extreme Networks BlackDiamond 10808 Installation Guide Page 47

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Extreme Networks BlackDiamond 10K-Series Switch Installation Guide 47
When the BlackDiamond 10808 switch boots with one or more MSMs already installed and an MSM
is installed in slot A, the MSM in slot A becomes the master.
When the BlackDiamond 10808 switch boots with a single MSM (regardless of the slot position), it is
selected as the master.
If additional MSMs are added to the switch after it has been powered on, the added MSMs become
the slaves. MSMs that operate as slaves can be inserted and removed without disrupting network
services.
If you remove the master MSM while the BlackDiamond 10808 switch is operating, the slave MSM
experiences a soft reset and then becomes the master MSM.
For example, if you have a BlackDiamond 10808 switch with a master MSM in slot A and a slave
MSM module in slot B, and you remove the master MSM from slot A, the slave in slot B becomes the
master.
MSM LEDs
Table 11 describes the LED activity on the MSM.
NOTE
To reset the critical software error LED (amber ERR LED), use the clear log static command and
reboot the switch. If you continue to have critical software errors, or the ERR LED is amber after the
clear log static command and a switch reboot, contact Extreme Networks Customer Support.
Table 11: MSM LEDs
LED Color Indicates
SYS Green blinking
Amber blinking
Amber
Off
Normal operation is occurring.
Diagnostic test is in progress.
Diagnostic failure has occurred.
Switch is not receiving power.
MSTR Green
Amber
Module is operating as master.
Module is operating as slave.
ENV Green
Amber
Environment (temperature, fan, power supply) is
operating properly.
Environmental failure has occurred.
ERR Amber
Off
A critical software error has been logged since power
up.
Normal operation is occurring.
Link/Activity Off
Green
Amber
Link is down.
Link is up.
Packet activity is occurring.
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