•
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 Overview
•
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
CB0
and
CB1
(referred to as
CB-0
and
CB-1
,
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.
CB0
installs above
RE0
, and
CB1
installs below
RE1
. Control boards cannot function if a Routing
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 on page 36
Table 12: T4000 Supported Control Board
First Supported Junos OS
Release
Model Number
Name
12.1
CB-LCC
Line-card chassis control board
(LCC-CB)
Related
Documentation
T4000 LCC-CB on page 37
•
•
T4000 Craft Interface LEDs on page 25
•
T4000 LCC-CB Control Board LEDs on page 37
Copyright © 2013, Juniper Networks, Inc.
36
T4000 Router Hardware Guide
Summary of Contents for T4000 -
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Page 389: ...PART 6 Index Index on page 367 365 Copyright 2013 Juniper Networks Inc ...
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