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Chapter 1: About this guide........................................................................................................... 5

Related documents............................................................................................................................................................. 5

Chapter 2: The S4048–ON switch................................................................................................. 6

Introduction...........................................................................................................................................................................6

Features................................................................................................................................................................................. 7

Physical dimensions.............................................................................................................................................................7

Switch status........................................................................................................................................................................8

LED display............................................................................................................................................................................ 8

LED behavior...................................................................................................................................................................9

Prerequisites....................................................................................................................................................................... 10

S4048–ON configurations................................................................................................................................................11

Chapter 3: Site preparations........................................................................................................ 12

Site selection.......................................................................................................................................................................12

Cabinet placement............................................................................................................................................................. 12

Rack mounting.................................................................................................................................................................... 13

Switch ground.....................................................................................................................................................................13

Fans and airflow................................................................................................................................................................. 13

Power.................................................................................................................................................................................... 13

Storing components.......................................................................................................................................................... 13

Chapter 4: NEBS compliance....................................................................................................... 15

Important information....................................................................................................................................................... 15

Chapter 5: S4048–ON installation................................................................................................16

Unpack the switch............................................................................................................................................................. 16

Unpack............................................................................................................................................................................16

Rack or cabinet hardware installation........................................................................................................................... 16

ReadyRails system installation...................................................................................................................................17

Two-post flush-mount configuration...................................................................................................................... 18

Two-post center-mount configuration................................................................................................................... 18

Four-post threaded configuration............................................................................................................................19

S4048-ON installation................................................................................................................................................ 20

1U front-rack installation........................................................................................................................................... 20

Ground cable................................................................................................................................................................. 21

SFP+ and QSFP+ optic installation...............................................................................................................................22

QSFP+ optic replacement......................................................................................................................................... 22

Split QSFP+ ports to SFP+ ports............................................................................................................................22

Switch power-up............................................................................................................................................................... 22

After S4048–ON installation.......................................................................................................................................... 23

Chapter 6: Power supplies...........................................................................................................24

Components....................................................................................................................................................................... 24

Contents

Contents 3