Ex4200 Cooling System - Juniper EX4200 Hardware Manual

Table 10: Status LED on Network Ports (continued)
LED

EX4200 Cooling System

IN THIS SECTION
Fan Tray | 46
Airflow Direction in the EX4200 Switch Chassis | 46
The cooling system in an EX4200 switch consists of a field-replaceable unit (FRU) fan tray with three fans
(see Figure 15 on page 46). All the EX4200 switch models, except the EX4200-24F-S and EX4200-48T-S
switches are shipped with one fan tray pre-installed in the rear panel of the switches. EX4200-24F-S and
EX4200-48T-S switches are not shipped with pre-installed fan tray; you must order them separately.
LCD Indicator State and Description
One blink per second—10 Mbps
Two blinks per second—100 Mbps
Three blinks per second—1000 Mbps
The speed indicators for network ports on the SFP uplink
module are:
Green—1000 Mbps
Unlit—10/100 Mbps
The speed indicators for network ports on the SFP+ and SFP+
MACsec uplink module are:
Green—The speed of the transceiver installed in the port is
the same as the speed at which the uplink module port is
configured to operate.
Unlit—The speed of the transceiver installed in the port is
not the same as the speed at which the uplink module port
is configured to operate.
The speed of the XFP uplink module ports is always 10 Gbps,
which is also the speed of XFP transceivers, therefore, this
LED is always green on an XFP uplink module.
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