Cisco CRM3 Instruction Manual

ems en
SYsTEM

CRM3 Hardware Installation
and Maintenance
Corporate Headquarters
Cabletron
Systems
35 Industrial
Way
Rochester
New
Hampshire
03867-5005
603 332-9400
Cabletron
Systems
Network
House
Newbury
Business Park
London Road
Newbury
Berkshire
England
RG13 2PZ
Text Part
Number 78-1189-01

The
products
and
specifications configurations
and other technicat information
regarding the products contained
in this manual are subject to change
without notice All
statements
technical information and recommendations contained
in this manual
are
believd
to
be
accurate
and reliable but are
presented without
svarranty of
any
kind
express
or
implied
and users must take full
responsibility
for their
application of any products specified
in this
manual THIS MANUAL IS PROVIDED AS IS WtTH ALL FAULTS CISCO DISCLAIMS ALL WARRANTIES EXPRESSED OR IMPLIED
INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE OR ARISING FROM COURSE OF DEALING
USAGE OR TRADE PRACTICE
IN NO EVENT SHALL CISCO BE LIABLE FOR ANY
INDIRECT SPECIAL CONSEQUENTIAL OR
INCIDENTAL DAMAGES INCLUDING
WITHOUT
LIMITATION
LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS
MANUAL EVEN
IF CISCO HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
Some states do not allow limitation
or
exclusion of
liability for consequential
or incidental
damages
or limitation on hosv long
implied warranties
last so
the
above
limitations or exclusions
may
not apply to
you
This
svarranty gives
Customers
specific legal rights
and you
may
also have other rights that
vary
from state to state
This
equipment
generates
uses and can
radiate radio
frequency energy
and if not instslled and used in accordance with the instructions
manual may
cause
interference
to
radio communicstions This
equipment
has been tested and found to
comply
with the limits for Class
computing
device pursuant to
Subpart of Part 15 of FCC Rules
svhich are designed to
provide reasonable protection against such
interference svhen operated in consmercial
environment
Operation
of this
equipment
in residential
area
is likely to cause interference in which csse the user at his own
expense
will be
required to
take whatever measures
msy
be required to correct
the interference
The
Cisco
implementation
of TCP header
compression
is
an adaptation
of
program developed by
the
University of California Berkeley UCB
as
part of
UCBs
public
domain version of the UNIX operating
system
All
rights
reserved Copyright 1981
Regents
of the
University of California Redistribution
and use in source and
binary
forms are
permitted provided
that the above
copyright
notice and this
paragraph are duplicated
in all such forms and that
any
documentation
advertising materials
and other materials related
to such distribution and
use scknosvledge
that the software
was developed by
the
University of California Berkeley
The name of the University
may
not be used to endorse or
promote products derived
from this softsvare without
specific
prior
written
permission
THIS SOFTWARE IS PROVIDED AS
IS AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES INCLUDING
WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR PARTICULAR PURPOSE
Point-to-Point Protocol Copyright 1989 Carnegie Mellon University
All
rights
reserved Redistribution and
use
in
source
and
binary
forms
are permitted
provided
that the above
copyright
notice and this
paragraph are duplicated
in all such forms and that
any documentation
advertising materials
and other
materials related to
such distribution and use acknosvledge that the software svas developed by Carnegie Mellon University
The
name
of the
University
may
not be used to endorse or
promote products derived
from
this softsvare without
specific prior
written
permission
THIS SOFTWARE IS PROVIDED
AS IS AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES
OF MERCHANTIBILITY AND FITNESS FOR PARTICULAR PURPOSE
Notice of Restricted
Rights
Use duplication or disclosure by
the Government is
subject
to restrictions as set forth
in
subparagraph
of the
Commercial Computer Software
Restricted
Rights clause
at FAR 52.227-19 and
subparagraph
ii of the Rights
in
Technical Data and Computer Softsvare clause at DFARS
252.227-7013 The information in this manual is
subject
to
change
svilhout notice
Access Without
Compromise ciscoBus
Cisco
Systems CiscoWorks
CmBus CpBus CxBus
Netscape The Packet
SMARTnet and TIN-Bus are
trademarks
and the Cisco logo is
registered
trademark of Cisco
Systems
Inc All other
products
or services mentioned in this document are the trademarks
service
marks registered trsdemarks
or registered service marks of their
reepective osvners
CRM3 Hadmmae Installation and Maintenance
Copyright 1993
Cisco
Systems
Inc
All
rights
reserved Printed in USA

TABLE OF
CONTENTS
Publication Objectives xi
Audience xi
Document
Organization
xi
Document Conventions xii
System Specifications
1-1
Safety
Recommendations 2-1
Safety with Electricity
2-2
Preventing
Electrostatic
Discharge Damage
2-2
About This
Manual xi
Chapter Product
Overview 1-1
Chapter Preparing
for Installation 2-1
Chapter
Installing
the Router 3-1
General Site
Requirements
2-3
Site Environment 2-3
Preventive Site
Configuration
Installation Checklist 2-3
Site
Log
2-5
2-3
2-5 Tools and
Equipment Required
Preparing
to Make Connections 2-5
Slot
Numbering
2-5
Unit
Numbering
2-7
RS-232 Connections 2-8
Console and
Auxiliary
Ports Connection
Considerations 2-9
Network Connection Considerations
2-10
Ethernet Connections 2-10
Token
Ring
Connections 2-12
Serial Connections 2-13
Fiber Distributed Data Interface
FDDI
Connections 2-16
Optical Bypass
Switch Uses
2-17
Inspecting
the
System
2-17
Installing
the Router 3-1
External Connections
3-2
Making
the Console
Port Connections 3-2
Making Network
Connections
3-3
Router Software
Configuration 3-8
Table of Contents iii

Chapter Troubleshooting
the Initial Hardware
Configuration
4-i
Troubleshooting
Overview 4-1
Problem
Solving 4-2
Troubleshooting
the Network Processor Modules and Cables 4-2
Environmental Reporting Features
4-2
Reading
Front Panel LED
Indicators 4-3
Network Processor
Module LED Indicators 4-5
FDDI Network Processor
Module LED Indications 4-10
Bootstrap Program
4-11
Entering the Bootstrap Program
4-11
Chapter
Maintenance 5-1
Tools Required 5-i
Removing
the Router from the Hub 5-2
Removing
Network Processor Modules 5-2
Router
Memory
5-4
Flash
Jumper
Settings 5-4
SIMM
Replacement
Procedures 5-4
Removing
SIMMS 5-6
Installing
SIMMs 5-6
Recovering
Lost Password 5-8
Appendix Cabling Specifications
A-i
Cable
Assembly
Considerations A-i
RS-232
Console Port Signals and Pinouts A-2
RS-232
Auxiliary
Port Signals
and Pinouts A-4
Serial Cable
Pinouts A-4
RS-232 Cable Assembly
A-4
RS-449 Cable
Assembly
A-6
V.35 Cable
Assembly
A-8
X.21 Cable
Assembly
A-b
EIA-530 Cable Assembly A-12
Ethernet Cable Pinouts A-13
Ethernet
AUI
Cable Assembly A-13
Ethernet
lOB aseT
Cable
Assembly
A- 14
iv
CRM3 Hardware Installation and Maintenance

Appendix
Virtual
Configuration Register
B-i
Virtual
Configuration Register Settings
B-i
Configuration Register Settings
B-2
Enabling Booting
From Flash B-S
Index
Table of Contents

vi CRM3
Hardware Installation and Maintenance

OF FIGURES
Figure
1-1 CRM3 RouterFront View 1-2
Figure
2-1 Installation Checklist 2-4
Figure 2-2
CRM3 RouterFront
View
2-6
Figure 2-3
Network Processor
Module
Slot Filler Panel 2-8
Figure 2-4 Single-Port Ethernet
Network Processor Module with AUI and lOBaseT Connectors 2-10
Figure 2-5 Dual-Port Ethernet
Network Processor Module
ith
AUI and lOBaseT Connectors 2-10
Figure 2-6 Dual-Port Ethernet
Network Processor Module lOB aseT Port Connection 2-11
Figure 2-7 Dual-Port Ethernet
Network Processor Module Ethernet
AUI
Port Connection 2-11
Figure 2-8 Extending
the Transition Cable from the Ethernet Port 2-12
Figure 2-9
Token
Ring Network
Proce.ssor Module 2-12
Figure
2-10 Token
Ring
Cable Connections 2-13
Figure
2-11 Serial Port Labeled V2 2-13
Figure
2-12 Dual Serial Network Processor
ModuleTop
View
2-14
Figure
2-13 Dual Serial Network Processor Module Jumpers
J-4 and J-5NRZI
Setting
2-14
Figure
2-14 Serial Cable Connections 2-15
Figure
2-15 Multimode
FDDI
Network
Interface
Connector
MIC
Type
2-16
Figure
2-16 Dual Attachment
FDDI Connections 2-17
Figure
3-1
Token
Ring Network
Processor Module 3-3
Figure 3-2 Single-Port Ethernet
Network Processor Module with AUI and lOBaseT Connectors 3-4
Figure 3-3 Dual-Port Ethernet
Network ProcessorModule with AUI and lOBaseT Connectors 3-5
Figure 3-4
Serial Port Labeled V2 3-6
Figure 3-5
Dual Attachment Multimode FDDI ModuleEnd View 3-6
Figure 3-6 Single
Attachment Multimode FDDI ModuleEnd View 3-7
Figure
3-7
Optical Bypass
Switch Installation 3-7
Figure
4-1 CRM3 RouterFront View 4-3
Figure 4-2 Single-Port Ethernet
Network Processor Module 4-5
Figure 4-3 Dual-Port Ethernet
Network Processor Module 4-5
Figure 4-4
Token
Ring Network
Processor Module 4-7
Figure 4-5
Serial Port Labeled V2 4-8
Figure 4-6
Dual Serial Network Processor
ModuleTop
View 4-8
Figure
4-7 Dual Serial Port LED CardSide View 4-9
Figure 4-8
Dual Attachment Multimode FDDI ModuleEnd View 4-10
Figure 4-9 Single
Attachment Multimode FDDI ModuleEnd View 4-10
Figure
5-1
Component Tray
5-3
List of
Figures
vii

Figure 5-2
SIMM Locations 5-5
Figure 5-3
Main- and
Shared-Memory
SIMM 5-5
Figure 5-4 Flash Memory
SIMM
5-6
Figure 5-5 Installing
SIMMs 5-7
Figure
A-i RJ-45 Console Connector and Pin Signals A-2
Figure
A-2 RJ-45
AdaptersFront
and Rear Views A-3
Figure
A-3 RS-232 Cable
Assembly
A-4
Figure
A-4 RS-449 Cable
Assembly
A-6
Figure
A-5 V.35 Cable
Assembly
A-8
Figure
A-fl X21 Cable
Assembly
A-b
Figure
A-i EIA-530 Cable Assembly A-12
Figure
A-B Ethernet
AUI
Cable
Assembly A-13
viii
CRM3 Hardware Installation and Maintenance

LIST
Table 1-1
Table 2-i
Table 2-2
Table 2-3
Table 4-1
Table
4-2
Table A-i
TableA-2
TableA-3
TableA-4
TableA-5
TableA-6
Table A-i
TableA-8
TableA-9
Table A-b
Table A-il
Table A-12
Table A-13
Table B-i
Table B-2
Table B-3
Table B-4
TableB-5
OF
TABLES
Router
Specifications
1-3
Unit
Numbering
for Dual-S erial and Token
Ring Modules
2-7
Unit
Numbering
for Two Dual-Serial Modules 2-7
IEEE Standard RS-232C Speed Versus Distance 2-8
Dual Serial Network Processor Module LED Indications 4-9
Command
Options 4-12
RJ45
Signal
Names and
Adapter
Pinouts A-3
Auxiliary
Port
RS-232
Signals DTE
25-Pin D-Sub
Connector
A-4
RS-232 DTE
Serial Cable Pinout and
Signals
A-S
RS-232 DCE
Serial Cable Pinout and
Signals
A-S
RS-449 DTE Serial
Cable Pinout and
Signals
A-6
RS-449 DCE Serial
Cable Pinout and
Signals
A-7
V.35 DTE Serial Cable
Pinout and
Signals
A-8
V.35 DCE Serial Cable Pinout and
Signals
A-9
X21 DTE Serial Cable Pinout and
Signals
A-i
X2i DCE Serial Cable Pinout and
Signals
A-li
EIA-530 DTE Serial Cable Pinout and
Signal Description
A-12
Ethernet
AUI
Pinout and
Signals
A-i
RJ-45 Connector Pinout and
Signals
A-14
Virtual
Configuration
Bit
Meanings
B-2
Explanation of
Boot Field
Configuration Register
Bits 00 to
03
B-2
Default Boot Filenames B-4
Configuration Register Settings
for Broadcast Address Destination B-S
System Console
Terminal Baud Rate
Settings
B-S
Listollables ix

CRM3
Hardware Installation and Maintenance

Aboutlhis
Manual
This section
discusses the objectives
audience
organization
and conventions of the CRM3
Hardware Installation
and
Maintenance
publication
PuWication
Objectives
The GRM3 Hardware Installation and Maintenance
publication
will
step you through
the installation
and
troubleshooting of the
hardware installation It also covers
selected maintenance procedures
Audience
The CRM3 Hardware Installation and Maintenance
publication
is
designed
for the
person
responsible
for installing the CRM3
router
who should be familiar with electronic
circuitry
and
wiring practices
and have
experience
as an
electronic or electromechanical
technician
For tutorial
on
initial software configuration refer to the Router Products
Getting Started
Guide
publication For
more
advanced
configuration applications
refer to the router
products
software
documentation
Document
Organization
The
major
sections of the CRM3 Hardware Installation
and Maintenance
publication
follow
Chapter
Product
Overview
contains
an overview
of the CRM3 router
Chapter Preparing
for
Installation
includes
safety
recommendations
tools and
equipment
site
requirements
an installation
checklist
console and
auxiliary port
cable connection
considerations
network connection
considerations
and
unpacking
instructions
Chapter
Installing
the
Router
includes instructions for installing
the router in the Cabletron
MMAC and
making
external connections
Chapter
Troubleshooting
the Initial Hardware
Configuration
includes troubleshooting
overview
problem
solving
environmental
reporting features reading
front
panel
LED
indications
network
processor
module LED
indications
and
system
bootstrap diagnostics
Chapter
Maintenance
includes instructions for
removing
the router from
the
hub
removing
network
processor
modules
replacing or adding
network
processor
modules removing
and
replacing the Flash memory
and
replacing
SIMMs
About This Manual xi

Document Conventions
Appendix Cabling Specifications provides
cable
illustrations
cable
pinouts
and
signal
descriptions
for
synchronous
serial cables and
Ethernet
AUI
cables
Appendix
Virtual
Configuration Register
describes the CRM3 software configuration
registers
the factory-default settings and the
procedures
for
changing those settings
Document Conventions
This manual
uses
the following conventions
to
convey
instructions and information
Command
descriptions
use these conventions
Commands and
keywords
are
in
boldface
Variables for which you
supply
values are in italics
Elements in
square brackets
are
optional
Alternative but required
keywords
are
grouped
in braces and
are
separated by
vertical
bar
Samples
use these conventions
Terminal sessions are in screen font
Information
you
enter is in boldface screen font
Nonprinting characters are
shown in
angle brackets
Information the
system displays
is in
screen font with default
responses
in
square brackets
Note Means reader take
note Notes contain
helpful suggestions or references
to materials not
contained in this manual
Timesaver
Means the described
actions saves ti/ne You
can save
time
by performing the action
described in the
paragraph
Caution Means reader be
careful
You are
capable
of
doing something
that
might
result
in
equipment damage
or
loss of
data
Warning
Means
danger
You are in situation that could
cause
bodily injury
Before
you work
on
any
equipment
be
aware of the hazards involved with electrical
circuitry
and standard
practices
for
preventing
accidents
xii CRM3
Hardware
Installation and Maintenance

CHAPTER
Product OveMew
The CRM3 is two-slot modular
multiprotocol router see Figure 1-1 designed
for insertion into
Cabletron
MMAC hub This router has Token
Ring backplane connection
that interfaces to the
MMAC
and up
to two network
procesor modulesindividual
modules which when installed in the
router
are
ready
for
external
network hardware connections
The modular
design
of the CRM3 and MMAC hub allows users to
hot
swap
the router thereby
reducing
network downtime
Note This manual
applies
to hardware installation
only
For initial
configuration information
and
software operating information refer to the router
products
software documentation
Design
features follow
Modular router that
integrates
into the Cabletron
family
of MMAC
hubs
40-megahertz MHz
Motorola 68EC030 32-bit
microprocessor
Support
for
up
to two network
processor
modules at
time including single
and dual Ethernet
Token
Ring
dual
serial
and
single
and dual attachment multimode
Fiber Distributed
Data
Interface
FDDI
interfaces
Any
network
processor
modules can be
placed
in either the top or
bottom network
processor
module slot
Any
desired combination of network
processor
modules
is
supported
with the
exception
of dual FDDI network
processor
module
configuration
The
router
can
support only
one
FDDI network
processor
module
in either
slot in
combination with
any
other network
processor
module
Note
To
successfully operate
the
FDDI network
processor
module
the
system requires
megabytes MB
of shared
memory
Flash
memory
capability
User-upgradable
network
processor
modules and
processor
local and
shared
memory
Jumperless
router configurations
Hardware thermal alarm to
warn
of excessively high operating
temperature
Product Overview 1-1
System Specifications

C-
CD Cl CD CD
BD OoD CO
-VI
CD CD
Cfl CI CD CD CD CD Cl
3_ 00D
5CI
00000000000
00000000000
\\
OOOOOOOOOOOOOOOOi/O
000000o0oo00000000Th OOOOOOOOOOOOOOOOJ
o000000000000000
00000000000000000
b0 h0
00000000000
00000000000
II
ooooooooooooooo
000000000000000000O oooooooooooooooooo
ooooooooooooooo
oooooooooooooj
EA-4
.az
0o000oL
Hi
61
7a

System
Specifications
Table 1-1 lists the
specifications
for the router
Table
1-1 Router
Specifications
Description Design Specification
Dimensions l55 11.5
10.16
cmx 39.37 cmx 29.2
cm
Weight
3.8 lb chassis without network
processor
modules
1.7 kg
Power
Requirement
100W
340 Btu
Current
Requirement
20A
max bA
per
slot
max
Processor 40-MHz Motorola
68EC030
32-bit wide
Main
Memory
MB standard
16
MB
max
Shared
Memory
MB standard MB
max
Flash
Memory
MB standard MB
max
Nonvolatile
Memory
128 KB
standard
Network
Interface
Options Single
and
dual
Ethernet
Token
Ring
dual
serial
single
and dual
attachment multimode
FDDI
Serial Interfaces RS-232 RS-449
V.35 X21
EIA-530
Console Port RS-232 RJ-45 female connector
Auxiliary
Port RS-232 DB-25 male connector
Operating Temperature
32 to 104F to
40C
Nonoperating Temperature
40 to 185F
40
to
85C
Humidity
to
95% noncondensing
Product Overview 1-3

System Specifications
1-4
CRM3 Hardware Installation and Maintenance

CHAPTER
Preparing
for InstalOation
This
chapter
describes the tasks
you must perform before
installing
the router
into the hub
Topics
covered in this
chapter
follow
Safety
recommendations
Safety with electricity
Preventing
electrostatic
discharge ESD damage
General site
requirements
Installation
Checklist
Site
Log
Tools and
equipment required
Preparing
to make connections
Network connection considerations
Inspecting
the
system
Safety
Recommendations
Follow these
guidelines
to ensure
general safety
Keep
the work
area
clear and dust-free during and after installation
Keep
tools
away
from walk
areas
Do
not wear
loose clothing that could
get caught
during
installation Fasten
your
tie
or
scarf and
sleeves
Wear
safety glasses
when
working
under
any
conditions that
might
be
hazardous
to
your
eyes
Do not perform
any
action that
creates
potential
hazard to
people
or makes
the
equipment
unsafe
Warning
Before
working
on
equipment
that is connected
to
power
lines
remove
jewelry including
rings necklaces
and
watches
Metal
objects
will heat
up
when connected to
power
and
ground
and
can cause
serious burns
or can
weld
to
the terminal
Preparing
for Installation 2-1

Safety
Recommendations
Safety with Electricity
The successful installation of the router
should not require
removing
or replacing network
processor
modules
or
memory
however
if this
becomes
necessary
the
following warning
will
appear
at
the
beginning
of
any procedure
requiring
hardware
configuration
Warning
Before changing the
hardware
configuration of
the
router
such as
installing
or
removing
network
processor
modules
or
memory remove
the router
from the MMAC hub Failure
to observe
this
warning
and
act
accordingly
may
increase the
potential
for shock hazard
or electrocution
Before beginning procedure
that
requires
hardware
configuration we
strongly
advised
that
you
read through
the entire
procedure
After
you
read the procedure
if
you
have
any doubts about
your
ability
to
perform
any part
contact service representative
for assistance
Follow these
guidelines
when
working
on
equipment powered by
electricity
Locate the
emergency power-off switch
in the
room in which you
are
working Then
if
an
electrical accident
occurs you
can act
quickly
to shut the
power
off
Before
attempting any hardware
modifications to the router
remove the router from the hub
Do not work alone when
potentially
hazardous conditions exist
Never
assume
that
power
has been
disconnected from
circuit
Always
check
Carefully
examine
your
work
area for
possible hazards
such
as moist
floors ungrounded power
extension
cables
and
missing safety grounds
If
an
electrical accident
occurs proceed as
follows
Use
caution
do
not
become
victim yourself
Turn OFF
power
to the system
If
possible
send another person to
get
medical aid
Otherwise assess
the condition of the
victim
and then call for
help
Determine
if the
person
needs
rescue
breathing or external cardiac
compressions
then take
appropriate action
Preventing
Electrostatic
Discharge Damage
Electrostatic
discharge
ESD
can
damage equipment
and
impair
electrical
circuitry
It occurs when
electronic printed circuit cards
are
improperly
handled and
can
result in
complete
or intermittent
failures
Always
follow ESD
prevention procedures
when
handling
ESD-sensitive
components Ensure
that
the chassis is
electrically
connected
to earth
ground
Wear
an ESD wrist
strap ensuring
that it makes
good
skin
contact
Connect the
clip
to an
unpainted
chassis frame
surface to
safely
channel unwanted
ESD
voltages
to
ground
To
properly guard against
ESD
damage and shocks
the wrist
strap
and cord
must
operate effectively
Use an ohmmeter to check the
ESD wrist
strap periodically
to
ensure
that
the resistor is
providing proper ESDprotection
in the
range
of to 10
megaohms
defective ESD
wrist
strap
can be
hazard
to
your
equipment
If no wrist
strap
is
available ground
yourself by touching
the metal
part
of the chassis
2-2 CRM3 Hardware Installation and
Maintenance

General Site
Requirements
Genera Site
Requrements
This section describes the requirements your site must meet for safe installation and
operation of
your system
Ensure that
your
site is
properly prepared
before
beginning
installation
Site Environment
The location of individual chassis and the layout of your
equipment
rack
or wiring room are
extremely important
for
proper system operation Equipment placed
too close together
inadequate
ventilation
and inaccessible
panels
can cause
system
malfunctions and
shutdowns
and can make
system maintenance
difficult
When
planning your
site
layout
and
equipment locations
use
the following precautions
to
help
avoid
equipment
failures and reduce the likelihood
of environmentally
caused shutdowns If
you
are
currently experiencing
shutdowns
or unusually high errors with your
existing equipment
these
precautions
may
help
you
isolate
the cause of failures and
prevent
future
problems
Preventive Site
Configuration
The
following precautions
will
help
you
plan an
acceptable operating
environment for
your router
and will
help
to avoid
environmentally
caused
equipment
failures
Remember that electrical
equipment generates heat
Ambient room
temperature may
not be
adequate
to cool
equipment
to
acceptable operating temperatures
without
adequate
circulation
Ensure that the
room
in which
your system operates has adequate
circulation
Always
follow
ESD-prevention procedures
to
avoid
damage
to
equipment Damage
from static
discharge
can cause
immediate
oi
intermittent
equipment
failure
If
configured with
fewer than
two network
processor
modules you must
place
network
processor
module slot filler
panel
in the
open
slot to
permit propel
air flow The chassis is
designed
to
allow cooling air
to
flow within
An
open
access panel
allows air
leaks
which
may
in
turn interrupt
and redirect the
flow of cooling air across
internal
components
nstaUaton CheckUst
The Installation Checklist
see Figure 2-1
lists all the
procedures
for initial hardware installation of
new
systems
Make
copy
of this checklist and note when each
procedure
is
completed
Place
copy
of the checklist for each
system
in
your
Site
Log See
the Site
Log section
Preparing
for Installation 2-3