T1600 Router Hardware Components Overview; T1600 Component Redundancy - Juniper T1600 Hardware Manual

CHAPTER 3
T1600 Router Hardware Components
Overview

T1600 Component Redundancy

Copyright © 2010, Juniper Networks, Inc.
T1600 Component Redundancy on page 13
T1600 Chassis Description on page 14
T1600 Midplane Description on page 16
T1600 Flexible PIC Concentrator (FPC) Overview on page 18
T1600 PIC Description on page 30
Cable Management Systems on page 31
T1600 Switch Interface Board (SIB) Overview on page 32
T1600 Host Subsystem Overview on page 36
T1600 SONET Clock Generators (SCGs) Description on page 50
T1600 SCG LEDs on page 51
T1600 Craft Interface Overview on page 51
T1600 Connector Interface Panel (CIP) Overview on page 56
T1600 Power System Overview on page 58
T1600 Cooling System Description on page 69
The T1600 Core Router is designed so that no single point of failure can cause the entire
system to fail. The following major hardware components are redundant:
Switch Interface Boards (SIBs)—The T1600 router has five SIBs.
Host subsystem—The host subsystem consists of a Routing Engine functioning together
with a control board. The router can have one or two host subsystems. 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. To operate, each host subsystem requires a Routing Engine
installed in an adjacent slot to a control board.
If the Routing Engines are configured for nonstop active routing, the backup Routing
Engine automatically synchronizes its configuration and state with the master Routing
Engine. Any update to the master Routing Engine state is replicated on the backup
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