Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
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Table Of Contents

Numerics - A - B - C - D - E - F - G - H - I - L - M - N - O - P - R - S - T - U - W -



19- and 24-inch racks 3-5


accessory kit, contents of 3-4

AC-input power suppliesA-1to A-11

300 W power supply features A-2, A-5

AC power cords listing A-8

branch circuit requirements 2-12, A-3, A-6

fan A-3, A-6

front panel LEDs A-7

input current A-3, A-6

input voltage A-3, A-6

LEDs A-4

PWR-C49E-300AC-F A-5

PWR-C49E-300AC-F specifications table A-6

PWR-C49E-300AC-R A-1

PWR-C49E-300AC-R specifications table A-3

removal and replacement procedures 4-8

source AC circuit requirements 2-12

weight A-4, A-7

AC power cords A-8

AC source power, connecting to the chassis 3-12

adapter, RJ-45 to DB-9 B-13


Catalyst 4948E and Catalyst 4948E-F switches 1-7

air flow, chassis 2-4

air temperature, ambient 2-4

altitude, effects on chassis 2-5

altitude, operating 1-7

audience, definition i-ix



cable guide installation 3-9

rack-mounting L brackets 3-6

branch circuit requirements, AC-input power supplies 2-12


cable guide 3-9

installing 3-8

cables and adapters B-12

cable static buildup caution 2-9


requirements and guidelines 2-13

Catalyst 4948E and Catalyst 4948E-F switches

acoustic noise 1-7

airflow 1-7

chassis dimensions 1-7

environmental specifications 1-7

features table 1-3

front view of chassis 1-2

physical characteristics 1-7

rear view of chassis 1-3

specifications 1-7

Catalyst 4948E-F airflow labels 1-2

Catalyst 4948E-F switches

blank power supply cover 1-6

console port 1-4

downlink port LEDs 1-4

downlink ports 1-4

Ethernet management port 1-4

fan tray 1-5

fan tray LED 1-5

power supplies

description 1-6

RESET switch 1-5

uplink port LEDs 1-4

uplink ports 1-4

Catalyst 4948E switches

blank power supply cover 1-6

console port 1-4

downlink port LEDs 1-4

downlink ports 1-4

Ethernet management port 1-4

fan tray 1-5

fan tray LED 1-5

power supplies

description 1-6

RESET switch 1-5

shock and vibration specifications 1-7

uplink port LEDs 1-4

uplink ports 1-4

caution definition i-xi

chassis, front view 1-2

chassis, rear view 1-3

chassis features 1-3

chassis features (front view) 1-2

chassis installation, tools required 3-4

checklist, site preparation 2-13

command conventions i-x


initial switch configuration 3-21

terminal-emulation software 3-21

console port

connecting to 3-20

description 1-4, B-11

LED B-12

pinout table B-11

conventions, command i-x

corrosion, sources of 2-6

customer service C-4

CWDM SFP transceiversB-5to B-6

description and color code B-6

optical specifications B-6


DC-input power suppliesA-12to A-13

fan A-13

features A-12

heat dissipation A-12

input current A-12

input voltages A-12

LEDs A-13

output voltage and current A-12

removal and replacement procedures 4-2

removal procedure 4-2

required tools 4-2

specifications table A-12

weight A-13

DC power, connecting to the chassis 3-14

DC power cables, requirements for 2-12

DC power supplies

circuit breaker requirements 2-12

dimensions, chassis 1-7


audience i-ix

obtaining i-xvi

organization i-ix

related i-x

downlink ports

connecting interface cables to 3-16

description 1-4

LEDs 1-4

dust and particulates, effects on chassis 2-5

DWDM SFP transceiversB-7to B-8

optical specifications B-8

physical and environmental specifications B-8

product numbers and ITU channel numbers B-7


electrical safety 2-9

Electromagnetic Interference. See EMI

Electrostatic Discharge. See ESD

EMI, effects on chassis 2-6

environmental specifications 1-7

equipment racks 2-2


attaching a wrist strap to the chassis 2-11

guidelines 2-10

preventing 2-10

using a ground strap 2-10

Ethernet management port

connecting to 3-20

description 1-4, 3-20, B-12

LED B-12

pinout table B-12


FAN LED 1-11

fan tray

color code 1-5

installing 4-11

LEDs 1-5

removal and replacement procedure 4-10

required tools 4-10

fan tray (WS-X4993)

description 1-5

fan tray (WS-X4993-F)

description 1-5

features, chassis 1-3

front panel LEDs 1-11


grounding. See system ground


heat dissipation, chassis 1-7

humidity 1-7

operating 1-7

humidity, effects on chassis 2-5



lifting safely 3-5

list of warnings 3-2

rack-mounting3-5to 3-8

required tools 3-4

starting the terminal-emulation software 3-21


label, chassis serial number C-4

L brackets, attaching to the chassis 3-6


AC-input power supplies A-4, A-7

DC-input power supplies A-13

downlink ports 1-4

fan tray 1-5

front panel 1-11

power-on self-test (POST) failures 3-22

power supply C-3

uplink ports 1-4



management port pinout B-12


NEBS ground

See system ground

note definition i-xi


operating temperature, chassis 1-7

organization, document (table) i-ix


physical and enviromental specifications tables


1-GB SFP transceivers B-6

physical characteristics

Catalyst 4948E and Catalyst 4948E-F 1-7


management port B-12


LEDs 3-22


connecting source DC 3-14

troubleshooting C-2

power cords A-8

power requirements

AC-input power supplies branch circuit requirements 2-12

site preparation 2-11

UPS, selecting a UPS 2-11

power source interruptions, effects on chassis 2-7

power supplies

AC-input power supplies installation procedure 4-9

AC-input power supplies removal procedure 4-8

DC-input power supplies removal and replacement procedure 4-2

DC power cable leads color coding 2-12

LEDs C-3

troubleshooting C-3, C-4

power supply

troubleshooting C-4

power supply, blank cover (Catalyst 4948E) 1-6

power supply, blank cover (Catalyst 4948E-F) 1-6

power supply fan speeds (table) A-5, A-8, A-14

PS1 LED 1-11

PS2 LED 1-11


rack-mounting3-5to 3-8

kit 3-4

required tools 3-4

rack-mounting guidelines 2-2

related documentation i-x

removal and replacement procedures

AC-input power supplies 4-8

DC-input power supplies 4-2

fan tray 4-10

RESET switch

accessing 1-5

description 1-5

function 1-5

rollover cables

description B-12

identifying colors B-13



translated safety warnings D-2

safety, lifting the chassis 3-5

safety with electricity 2-9

serial number, chassis C-4

service requests i-xvi

SFP+ transceiversB-9to B-11

cabling specifications B-10

copper features B-9

optical features B-9

physical and environmental specifications B-11

transmit and receive specifications B-11

SFP transceiversB-1to B-5

1-GB SFP transceivers

physical and enviromental specifications table B-6

copper transceiver features B-2

fiber loss budgets table B-5

optical transceiver features B-2

physical and enviromental specifications table B-5

specifications table B-4

transceivers supported B-1

shock and vibration, effects on chassis 2-7

shock and vibration specifications 1-7

site preparation checklist 2-13

site requirements 2-2

air flow 2-4

altitude 2-5

corrosion 2-6

dust and contamination 2-5

EMI 2-6

humidity 2-5

power interruptions 2-7

shock and vibration 2-7

temperature 2-3

software documentation i-x

specifications, chassis 1-7

startup sequence C-3


storage 1-7

storage temperature, chassis 1-7

syntax, command i-x

system ground

accessory kit 3-10

grounding lug 3-10

ground pad location 3-11

guidelines 2-8

installing 3-10

kit 3-4

requirement 3-10

requirements 2-7, 2-9

tools required 3-10

system ground kit 3-4


telco racks 3-5


chassis operating 1-7

temperature, site requirements 2-3

temperature, storage 1-7

temperature, thermal transition 1-7

terminal-emulation software 3-21

thermal transition temperature 1-7

tip definition i-xi


contacting customer service C-4

initial boot C-2

methodology C-2

power supplies C-4

power supply C-3, C-4

startup C-3


uplink ports

connecting to 3-16

description 1-4

LEDs 1-4

transceivers 3-16

UPS, selecting 2-11


warning definition i-xi


translated safety D-2

warnings, installation 3-2

weight, chassis 1-7

wrist strap, ESD 2-10