Datasheet

Table 7: States for RE-B-1800 Routing Engine LEDs

DescriptionStateColorLabel

Routing Engine is functioning as master.On steadilyBlueMASTER

Routing Engine is not operational.On steadilyRedFAIL

Indicates activity on the SSD or Compact Flash.BlinkingGreenSTORAGE

Routing Engine is running normally.On steadilyGreenONLINE

Documentation

Displaying M7i Router Components and Serial Numbers on page 191•

• M7i Router Physical Specifications on page 163

M7i Power Supply Overview

•

M7i Power System Description on page 23

•

M7i AC Power Supply on page 24

•

M7i DC Power Supply on page 25

•

M7i Power Supply LEDs on page 25

M7i Power System Description

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

mechanism. The enable pin disables the voltage at the output connector if the power

supply is not turned off before removal.

Power supplies are hot-removable and hot-insertable, as described in “M7I

Field-Replaceable Units (FRUs)” on page 89. To avoid electrical injury, carefully follow

the instructions in “Replacing an M7i AC Power Supply” on page 111 and “Replacing a DC

Power Supply” on page 116.

Chapter 2: M7i Hardware Components