Juniper M Series User Manual

Figure 285: M320 Router, T320 Router, T640, and T1600 Router Redundant Host Subsystems
A
MASTER
FAIL
OK
A
B
B
MASTER
FAIL
OK
RE0
RE1
CB0
CB1
RE0
RE1
CB0
CB1
g002294
CB 0
RE 0
RE 1
CB 1
CB-M
CB-M
M320 router rear
T640 routing node rear T1600 rear
Control Boards
Control Board
Control Board
Control Boards
Routing Engines
Routing Engines
T320 router rear
RE0
RE1
CB0
CB1
RE0
RE1
CB0
CB1
Related
Documentation
Redundancy Connection for an M320 Router on page 574•
• Redundancy Connection for a T320 Router and T640 Router on page 574
TX Matrix and TX Matrix Plus Redundant Host Subsystems
On the TX Matrix and TX Matrix Plus router, the host subsystem consists of a Routing
Engine and Control Board functioning as a unit. If two host subsystems are installed, one
functions as the master and the other functions as the backup. If the master host
subsystem (or either of its components) fails, the backup can take over as the master.
(See Figure 286 on page 570.)
If the Routing Engines are configured for graceful switchover, the backup Routing Engine
automatically synchronizes its configuration and state with the master Routing Engine.
569Copyright © 2012, Juniper Networks, Inc.
Chapter 28: Host Redundancy Overview

Juniper M Series Specifications

General

Brand	Juniper
Model	M Series
Category	Network Router
Language	English