TOM MALLIS
• IT-241
• WEEK 7 POWER POINT
• 12-14-2014
PUBLIC
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ALL 3 TYPES.
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PRO
BEGINNINGS
• THERE ARE THREE DIFFERENT CONFIGURATIONS OF
WIRELESS NETWORKING SERVICE SETS, WE WILL
DISCUSS THEM ALL.
• ILLUSTRATIONS, SHOWING WIRELESS ACCESS POINTS,
WIRELESS DEVICES, AS WELL AS PHYSICALLY WIRED
NETWORKS.
• PROS AND CONS OF BSS
TYPES OF WIRELESS
CONFIGURATIONS
• INDEPENDENT
• EXTENDED
• BASIC
CONFIGURATION ONE,
INDEPENDENT BASIC SERVICE
SET
(IBSS)
• AD-HOC AND PEER TO PEER NETWORKS FALL INTO THE
CATEGORY OF IBBS
• WIRELESS NETWORKS WITHOUT ACCESS POINTS ARE
KNOWN AS INDEPENDENT BASIC SERVICE SET
DIAGRAM OF INDEPENDENT
BASIC SERVICE SET
(IBSS)
CONFIGURATION 2,
EXTENDED SERVICE SET
(ESS)
• WHEN THE RADIO FREQUENCIES THEM SELVES CAN
DETERMINE AN ALTERNATE APE, A HANDOFF WILL HAPPEN.
• WHEN CELLS OVERLAP IN AN AP ROAMING MAY HAPPEN
• IN THE CASE WHERE A BSA WHICH IS DISCUSSED NEXT, OR
BBS ARE TOO SMALL, AN ESS WOULD THEN BE AN OPTION.
• TWO OR MORE BSS NETWORKS ARE KNOWN AS AN ESS
DIAGRAM OF EXTENDED
SERVICE SET (ESS)
OUR THIRD AND FINAL
CONFIGURATION MAY BE THE
FIRST YOU WILL LEARN, THE
BASIC
SERVICE
SET
IN
LAYMAN'S
TERMS,
A
BSS
IS
A NETWORK WHERE ALL
•
NODES ARE CONNECTED TO ONE ACCESS POINT
(BSS)
• DYNAMIC RATE SHIFTING, INFRASTRUCTURE MODE,
BASIC SERVICE AREA, AND SERVICE SET IDENTIFIER ALL
FALL WITHIN A BSS’ STRUCTURE.
BASIC SERVICE SET
(BSS)
• A USER NEEDING TO BE CONNECTED AT LOWER SPEEDS
WOULD USE DYNAMIC RATE SHIFTING.
• SEVERAL WIRED DEVICES THAT ARE SERVED BY A SINGLE
WIRELESS ACCESS POINT ARE KNOWN AS INFRASTRUCTURE
MODES
• THE AREA WHERE THE BSS IS PHYSICALLY LOCATED BASIC
SERVICE AREA.
• EACH BSS MUST BE ASSIGNED A UNIQUE IDENTIFIER, THIS IS
CALLED A SERVICE SET IDENTIFIER.
BASIC SERVICE SET
(BSS)
• THE BIGGEST ADVANTAGE OF USING BSS IS PROBABLY
THE BOTTOM LINE, OR COST. THIS IS A SIMPLE
NETWORK AND ONLY USING ONE ACCESS POINT WILL
SAVE IN THE POCKETS.
