User guide

Metrobility “redundant twister” 17
User Guide
This section contains more detailed user information regarding the operating
features of your “redundant twister”.
LED Operation
All LEDs are located on the front panel. These include SW, PWR A & B, SECOND-
ARY, LK and AT LEDs. There are separate LK and AT LEDs for each of the three
ports (MAIN, PRIMARY and SECONDARY). Refer to the table below for refer-
ence. The function of each LED is specified below:
LED Label Color (Status) Indication
SW
*
Amber (steady) SECONDARY port was the active
port at some point
PWR (A & B) Green (steady) Power ON
SECONDARY Green (steady) ON SECONDARY active
OFF PRIMARY active
(MAIN) LK Green (steady) Receive link present
(MAIN) AT Green (blinking) Receiving data
(PRIMARY) LK Green (steady) Receive link present
(PRIMARY) AT Green (blinking) Receiving data
(SECONDARY) LK Green (steady) Receive link present
(SECONDARY) AT Green (blinking) Receiving data
TM
TM
MAIN PWR
AT
LK
A
B
PRIMARY
AT
LK
SECONDARY100BASE-TX/FX
AT
RESET
LKSW
“redundant twister” 2731
TX RX TX RX
* This LED functions in Dynamic Recovery Mode (DRM) only.