Specifications

9030368 E9 Device View
2-7
SNMP NB30 Device View
SNMP NB30 LEDs
SNMP NB30 LEDs
The LEDs on the bridge front panels in the Device View are animated to
reflect the state of the LEDs as of the last poll cycle. The LEDs turn on or off to
match the bridge on the network. For detailed information on the LED
definitions, and the operation of your bridge, refer to the documentation that
accompanied your bridge. The following is a general definition of specific
LEDs for the SNMP NB30 bridge model types.
POWER
When this green LED is on, the bridge is receiving power.
STAND BY
When this yellow LED is on, the bridge is in “STANDBY” mode and not
capable of forwarding packets across the link.
Remote V.35 and RS449 Port
LINK OK
When this green LED is on, the bridge has a valid receive clock from the DCE.
CTS (Clear To Send)
When this yellow LED is on, the DCE is not conditioned to transmit data.
DM (Data Mode)
When this red LED is on, the DCE is not in the data transfer mode.
POK (Port OK)
When this green LED is on, the Remote Port has passed the Internal Loop
Back Test and is ready for transmission. A proper transmit clock from the
DCE must be present for this test to pass.
Remote DSX-1 Port
LINK OK
When this green LED is on, a valid T1 signal is present.
YELLOW ALARM
When this yellow LED on the local NB30 is on, the remote NB30 is in red
alarm.
RED ALARM
When this red LED on the local NB30 is on, it has lost synchronization with
the remote NB30.
POK (Port OK)
When this green LED is on, the Remote Port has passed the Internal Loop
Back Test and is ready for transmission.