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Management Port LEDs on a QFX5100 Device

The management ports (labeled C0 for 10/100/1000 Base-T and C1 for 10/100/1000 Base-T and SFP 1000 Base-X connections) on a QFX5100 switch have two LEDs that indicate link status and link activity (see Figure 1). The left LED indicates status; the right LED indicates link/activity.

Figure 1: Management Port LEDs on a QFX5100 SwitchManagement Port LEDs on a QFX5100 SwitchManagement Port LEDs on a QFX5100 Switch
  1
Status LEDs
  4
em0–RJ-45 (10/100/1000 Base-T) management Ethernet port (C0)
  2
em1–SFP management Ethernet port (C1) Cage (socket for either 10/100/1000 Base-T RJ45 SFP or 1GbE fiber SFP)
  5
RJ-45 console port (CON)
  3
Reset button, see caution statement below
  6
USB port
CAUTION:

Do not use the Reset button to restart the power sequence unless under the direction of Juniper Networks Technical Assistance Center (JTAC).

Table 1 describes the management port LEDs.

Table 1: Management Port LEDs on a QFX5100 Switch

LED

Color

State

Description

Link/Activity

Unlit

Off

No link is established, there is a fault, or the link is down.

Green

On steadily

A link is established, but there is no link activity.

Blinking or flickering

A link is established, and there is link activity.

Status

Unlit

Off

Either the port speed is 10 M or the link is down.

Green

On steadily

The port speed is 1000 M.

Amber

On steadily

The port speed is 100 M.