M7I Routing Engine Leds; M7I Power Supply Overview; M7I Power System Description; Table 6: States For Routing Engine Leds - Juniper M7I Hardware Manual

M7i Routing Engine LEDs

Related
Documentation

M7i Power Supply Overview

M7i Power System Description

Copyright © 2010, Juniper Networks, Inc.
Four LEDs—A green LED labeled
, and a green LED labeled
FAIL
describes the LED states.

Table 6: States for Routing Engine LEDs

Label Color
Green
HDD
Blue
MASTER
FAIL Red
ONLINE Green
M7i Routing Engine Description on page 18
M7i Router Description on page 3
M7i Router Physical Specifications on page 159
M7i Router Power Requirements on page 163
M7i Power System Description on page 21
M7i AC Power Supply on page 22
M7i DC Power Supply on page 23
M7i Power Supply LEDs on page 24
The router uses either AC or DC power. You can install one or two load-sharing power
supplies at the bottom rear of the chassis, as shown in Figure 2 on page 6. The power
supplies connect to the midplane, which distributes power to router components
according to their individual voltage requirements.
For full redundancy, two power supplies are required. When the power supplies are
installed and operational, they automatically share the electrical load. If a power supply
stops functioning for any reason, the second power supply instantly begins providing all
the power the router needs for normal functioning. It can provide full power indefinitely.
An enable control signal on the output connector of each power supply ensures that the
supply is fully seated into the router midplane before the supply can be turned on. The
enable pin prevents a user-accessible energy hazard, so there is no interlocking
, a blue LED labeled
HDD
indicate Routing Engine status. Table 6 on page 21
ONLINE
State Description
Blinking There is read/write activity on the PC card.
On steadily Routing Engine is functioning as master. On an M7i
router, this LED is always lit.
On steadily Routing Engine is not operational.
On steadily Routing Engine is running normally.
Chapter 2: M7i Hardware Components
, a red LED labeled
MASTER
21