Figure 297: T320, T640, And T1600 Router Routing Engines - Juniper M Series Monitoring And Troubleshooting Manual

Hide thumbs Also See for M Series:

Table of Contents

Figure 297: T320, T640, and T1600 Router Routing Engines

T320 router rear

Documentation

Both the Routing Engine and the Control Board must be installed for the host subsystem

to function. When two host subsystems are installed in the router, both are powered on,

but only one is the master; the second host subsystem is the backup and performs no

functions. By default, the master host subsystem has components installed in slots

; the backup host module has components installed in slots

Routing Engine physically fails, the other one assumes the routing functions. If a software

failure occurs, the other backup Routing Engine assumes routing functions if some

preliminary configuration has been done.

The T320 router, T640 router, and T1600 router craft interface LEDs indicate the Routing

Engine operating status and mastership.

Check the T320 Router Routing Engine LEDs on page 187

Check the T640 Router Routing Engine LEDs on page 187

Chapter 29: Monitoring Redundant Routing Engines

T640 router rear

T1600 router rear