Juniper BX7000, Hardware Manual, Page: 24 / 138

CHAPTER 1: BX7000 Multi-Access Gateway Overview
6 Hardware Components Copyright © 2010, Juniper Networks, Inc.
System LED
A tricolor system LED indicates the status of the power supplies, temperature, and conditions
based on chassis configuration such as LOS (loss of signal), Ethernet link down. A condition that
causes a change in the system LED indication also activates the corresponding alarm relay contact
on the front panel. Table 2 on page 6 describes the status of the system LED.
Table 2: System LED
Synchronization Status LED on the Advanced Clocking Module
The advanced clocking module has a bicolor LED to indicate the synchronization status of the
clocks. Figure 4 on page 6 shows the LED of the advanced clocking module. If the LED is green, the
advanced clocking module is locked with an input source. If the LED is amber, the advanced
clocking module is currently not locked and is either in holdover mode or free-running mode.
Figure 4: LED in the Advanced Clocking Module
T1/E1 Ports
The T1/E1 ports provide connection to T1 or E1 network media types such as switches. They receive
incoming packets from the network and transmit outgoing packets to the network. Figure 5 on
page 6 shows the T1/E1 ports.
Figure 5: T1/E1 Ports
Shape Color State Description
Green
On steadily The gateway is functioning normally,
temperature and outputs are within
range, and no alarms are present
Yellow
On steadily A non-critical or minor condition
requires monitoring—Possible causes
include one of the power supplies
removed from the gateway or high
temperature
Red
On steadily A critical condition that can cause the
gateway to stop functioning and
requires immediate attention—
Possible causes include component
removal or failure
Off
Gateway powered down or initializing
LED