Graphics Programs Reference
In-Depth Information
p
idle 1
p
idle 2
t
arrival 1
t
arrival 2
t
start tx 1
t
end tx 1
t
start tx 2
t
end tx 2
p
wait 1
p
transmit 1
p
wait 2
p
poll 2
p
transmit 2
t
move 2−3
p
poll 1
t
proceed 1
p
move 1−2
t
move 1−2
t
proceed 2
p
move 2−3
t
move 3−1
p
move 3−1
t
proceed 3
p
poll 3
p
transmit 3
p
wait 3
t
end tx 3
t
start tx 3
t
arrival 3
p
idle 3
Figure 1.10:
PN description of a token ring LAN with three users
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