Figure 154: M5 And M10 Router Cooling System And Airflow - Juniper M Series Monitoring And Troubleshooting Manual

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M Series and T Series Routers Monitoring and Troubleshooting Guide

Documentation

M5 and M10 Router Cooling Systems

Figure 154: M5 and M10 Router Cooling System and Airflow

Documentation

M7i Router Cooling System

Checklist for Monitoring the Cooling System on page 317

The M5 and M10 router houses four fans, which draw room air into the chassis to keep

the internal temperature below a maximum acceptable level. The air flows side-to-side

in the chassis (see

Figure 154 on page

Do not remove the fan tray for more than one minute while the

router is operating. The fans are the sole source of cooling, and the router

can overheat when they are absent.

Checklist for Monitoring the Cooling System on page 317

The M7i router cooling system consists of a fan tray, located along the left side of the

chassis, that provides side-to-side cooling. It connects directly to the router midplane.

The fan tray is a single unit containing four individually fault-tolerant fans. If a single fan

fails, the remaining fans continue to function indefinitely.

The cooling system draws in room air through the air intake vent on the left side of the

chassis. After entering the chassis, the air stream separates into separate flows for the

front and rear components (see

Figure 155 on page