T4000 Control Board Overview; T4000 Control Board Description; Table 12: T4000 Supported Control Board - Juniper T4000 Hardware Manual

T4000 Router Hardware Guide

T4000 Control Board Overview

Related
Documentation
36
T4000 Craft Interface LEDs on page 25
T4000 RE-C1800 LEDs on page 41
T4000 LCC-CB Control Board LEDs on page 37
T4000 Control Board Description on page 36
T4000 LCC-CB on page 37
T4000 LCC-CB Control Board LEDs on page 37
T4000 Control Board Description
The T4000 chassis supports up to two control boards. The Routing Engine requires an
adjacent control board to provide control and monitoring functions for the router. These
functions include determining Routing Engine mastership, controlling power and reset
for the other router components, monitoring and controlling fan speed, and monitoring
system status.
You can install up to two control boards in the chassis. Control boards install into the
upper rear of the chassis in the slots labeled
top to bottom). If two control boards are installed, one functions as the master and the
other as its backup. If the master fails or is removed, the backup restarts and becomes
the master.
Each control board requires a Routing Engine to be installed in the adjacent slot.
installs above , and
RE0 CB1
Engine is not present in the adjacent slot.
If the host system is redundant, the backup control board is hot-removable and
hot-insertable, but the master control board is hot-pluggable. A control board that is not
redundant is hot-pluggable.
The T4000 router supports the control board listed in

Table 12: T4000 Supported Control Board

Name
Line-card chassis control board
(LCC-CB)
T4000 LCC-CB on page 37
T4000 Craft Interface LEDs on page 25
T4000 LCC-CB Control Board LEDs on page 37
and
CB0
installs below . Control boards cannot function if a Routing
RE1
Model Number
CB-LCC
(referred to as and
CB1 CB-0
Table 12 on page 36
First Supported Junos OS
Release
12.1
Copyright © 2013, Juniper Networks, Inc.
,
CB-1
CB0