Name: Juniper EX4550
Brand: Juniper
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Figure 19: 10GBASE-T Ethernet Network Port and 10GBASE-T Expansion

Module Port LEDs

Link/Activity

lower port

Link/Activity

upper port

g021477

Each 10GBASE-T Ethernet network port and 10GBASE-T expansion module port has an

LED that indicate the link activity of the port. Each LED is shaped to point toward the port

for which it displays the link activity.

Figure20 on page 31 shows the LEDs on the QSFP+ expansion module ports of an EX4550

switch.

Figure 20: QSFP+ Expansion Module Port LEDs

Each QSFP+ expansion module port has two LEDs that indicate link activity and status

of the expansion module ports.

The following tables in this topic describes the behavior of link activity and status LEDs

of network ports and expansion module ports in EX4550 switches:

•

Table 14 on page 31 describes the Link/Activity LED.

•

Table 15 on page 32 describes the Status LED on SFP+ network ports and SFP+

expansion module ports.

•

Table 16 on page 32 describes the Status LED on QSFP+ expansion module ports.

Table 14: Link/Activity LED on Network Ports and Expansion Module Ports

State and DescriptionColorLED

•

Blinking—The port and the link are active, and there is link activity.

•

On steadily—The port and the link are active, but there is no link activity.

•

Off—The port is not active.

GreenLink/Activity

NOTE: You must configure medium-dependent interface (MDI) properties

for a 10-gigabit Ethernet interface on 10GBASE-T network ports and

10GBASE-T expansion module ports to ensure that both sides of the link are

compatible. For information about MDI properties, see mdi-mode.

Chapter 2: Chassis Components and Descriptions

Juniper EX4550 Hardware Guide

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