Juniper T320, T640, T-CB Installation Instructions Manual
T320 Internet Router and T640 Internet
Routing Node Control Board (T-CB)
Installation Instr uctions
12 November 2004
Part No: 530-012185-01
Revision 2
This document describes how to remove and replace a Control Board (T-CB) in a
T320 Internet router and a T640 Internet routing node.
Contents
T-CB Description ............... ................ ................ ................ ..... 2
T-CB Components........ ................ ................ .................. ......... 3
Tools and Parts Required........................................................... 4
Replacing a T-CB ............ ................ ................ ................ ....... 4
Removing a T-CB............................................................... 4
Installing a T-CB ............................................................... 5
List of Technical Publications ............. ................ ................ ......... 6
Requesting Support................................................................. 8
Revision History ....... ................ .................. ................ ........... 9
1
T320 Internet Router and T640 Internet Routing Node Control Board (T-CB) Installation Instructions
T-CB Description
Each T-CB works with an adjacent Routing Engine to provide control
and monitoring functions for the routing platform (see Figure 1). T hese
functions include determining Routing Engine mastership; controlling power
and reset for the other routing platform components; monitoring and
controlling fan speed; and monitoring system status.
You can install one or two T-CBs in the routing platform. The T-CBs install
into the upper rear of the chassis in the slots labeled
T-CB-0 and T-CB-1). If two T-CBs are installed, one functions as the
to as
master T-CB and the other as its backup. If the master fails or is removed,
the backup restarts and becomes the master.
CB0 and CB1 (referred
Figure 1: T-CB
EachT-CBrequiresaRoutingEnginetobeinstalledintheadjacentslot.
T-CB-0
installs above RE0,andT-CB-1 installs below RE1.AT-CBdoesnotfunction
if a Routing Engine is not present in the adjacent slot.
T-CBs are hot-pluggable.
Extractor clip
Online/offline
button
LEDs
M/S and chassis
ID switches
O
N
LIN
E
O
F
F
L
IN
Control Board - T
/
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M
F
A
I
L
O
K
A
S
T
E
R
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U
L
T
I C
H
A
S
S
IS
M
O
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C
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H
Y
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A
E
S
LL
S
IS
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G
W
ID
S
R
=
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=
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1
Extractor clip
10
M
b
0
0M
b
C
IP
Control
plane ports
g002130
NOTE: The T-CB requires JUNOS software Release 7.0 or later.
2 T-CB Des cription
T-CB Components
Each T-CB consists of the following components:
100-MB Ethernet switch. This switch is used for intermodule communication.
PCI bus to the Routing Engines.
Processor subsystem (SPMB).
Three LEDs, located on the T-CB faceplate. These indicate the status of the
T-CB. Table 1 describes the functions of the T-CB LEDs.
Online/offline button, located on the T-CB faceplate. This button is
nonfunctional.
Two configuration switches, located on the T-CB faceplate.
NOTE: The M/S and CHASSIS ID switches on the T-CB faceplate must always be set to
S and 0 in a standalone routing platform.
If a T640 routing node is connected to a TX Matrix platform, these switches must
be set to
M and the chassis identifier (ID) of the routing node. In this case, both
T-CBs must have the same chassis ID. For more information, see the TX Matrix
Platform Hardware Guide.
Table 1: T-CB LEDs
Two RJ-45 ports labeled AUX and CIP on the T-CB faceplate. These ports are not
used in a standalone routing platform. Only the
CIP port is used in a T640
routing node connected to a TX Matrix platform. For more information, see
the TX Matrix Platform Hardware Guide.
Label Color State Description
MASTER Blue On steadily T-CB is functioning as the master.
FAI L Amber On steadily T-CB has failed.
Green
On steadily T-CB is online and is functioning normally.OK
Blinking T-CB is pow
ering up, but not online.
T-CB Components 3
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