Lecture Notes For CCNA

CHAPTER 7 - LAN SWITCHING

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Port config switching

Software based

Frame switching

multiple simaltaneous
catalysts

Cell switching

atm, 53 byte cells

full duplex

bridges

switches

100baseX

2 class ii repeaters
tx = 100m fx=412 metres h. duplex

store &forward

used by catalyst

STP, STA

Vlans

cat 3000,5000
Inter switch link (ISL)
unique id header of each frame
id removed before exiting switch except via isl
data link layer
frame addresses change after each router

packet logical addresses do not change

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