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ii
TABLE OF CONTENTS
TABLE OF CONTENTS..................................II
CHAPTER 1 INTRODUCTION .................. 1
UNPACKING ........................................................... 3
DEVICE DESCRIPTION, FEATURES AND
CAPABILITIES .................................................4
DES-1200M F
RONT AND REAR PANELS......................4
DES-128 8
PORTS 10/100BASE-TX MODULE............... 6
DES-121T G
IGABIT 1000BASE-T SWITCH MODULE ..... 8
FD THE LED INDICATOR IS YELLOW WHEN THE PORT IS OPERATING
IN
FULL-DUPLEX MODE. WHEN THE PORT IS OPERATING IN HALF-
DUPLEX MODE, THE LED INDICATOR IS NOT LIT. ..................... 9
DES-124F 4 PORTS 100BASE-FX FIBER MODULE ...... 10
DES-121G/GL 1000BASE-SX/LX FIBER MODULE..... 12
CHAPTER 2 PLANNING YOUR
NETWORK .....................................................13
10BASE-T ETHERNET NETWORK GUIDELINES ............13
100B
ASE-TX FAST ETHERNET NETWORK GUIDELINES 13
100B
ASE-FX FAST ETHERNET NETWORK GUIDELINES 14
1000BASE-SX AND LX NETWORK GUIDELINE..........14
N
ETWORK PLANNING.............................................15
E
XPANDED NETWORKS ..........................................15