Figure 291: Redundancy Connection For An M320 Router; Redundancy Connection For A T320 Router, T640 Router, And T1600 Router - Juniper M Series Monitoring And Troubleshooting Manual

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M Series and T Series Routers Monitoring and Troubleshooting Guide

Documentation

Redundancy Connection for an M320 Router

Documentation

M120 Router Redundant Host Subsystems on page 567

Figure 291 on page 574

shows the connection between the master and backup host

subsystems on an M320 router. Keepalive messages are sent from the Routing Engine

interface. The keepalive message is forwarded to the other host subsystem

interface on the Control Board. A keepalive response is sent back over the

interface to the other Routing Engine. In this way, the master and the backup host

subsystems exchange state information.

Figure 291: Redundancy Connection for an M320 Router

M320 Router, T320 Router, and T640 Router Redundant Host Subsystems on page 568

Figure 292 on page 575

shows the connection between the master and backup host

modules on a T320 router, T640 router, or T1600 router with a Routing Engine 600

(RE-600). Keepalive messages are sent from one Routing Engine to the other over the

interface found on the Routing Engine. The keepalive message is received by the

other host module via the

interface of the other Routing Engine. In this way, the master and the backup host

subsystems exchange state information.

interface. A keepalive message is sent back over the