Ҕ
2
Ethernet
:
4
-562
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..
:
..
2014
: Ethernet
:. , . . . .
PDV. .
PVV. .
Ethernet.
C1 | + |
C2 | - |
C3 | + |
C4 | + |
C5 | + |
C6 | - |
C7 | - |
C8 | + |
C9 | + |
C10 | + |
C11 | + |
C12 | - |
13 | - |
S1 10BaseFB | - |
S2 10BaseFB | + |
S3 10BaseFB | + |
S4 10BaseFB | + |
S5 10BaseT | + |
S6 10BaseT | - |
S7 10BaseT | - |
S8 10BaseFL | - |
S9 10BaseFL | - |
S10 10BaseT | + |
S11 10BaseT | + |
S12 10BaseFB | + |
S13 10BaseFL | - |
S14 10BaseFL | + |
S15 10BaseT | - |
S16 10BaseT | - |
S17 10BaseT | - |
S18 10BaseT | - |
S19 10BaseT | + |
S20 10BaseT | + |
S21 10BaseT | + |
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|
:
D=max(s19+s10+s2,s20+s11+s2)+max(s21+s14+s12+s3)+max(s5+s4)=max(100+100+500, 100+100+500)+max(100+700+700+500) +max(100+400)=700+2000=2700
2700 .
PDV.
4- 3 9 6 , lOBase-FB. , 2700 , 2500 . PDV .
|
|
PDV.
19: 15,3 + 100 0,113 = 26,6.
10: 42 + 100 0,113 = 53,3.
2: 24 + 500 0,1 =74,0.
3: 24 + 500 0,1 = 74,0.
12: 24 + 700 0,1 = 94,0.
14: 33,5 + 700 0,1 = 103,5.
21: 165 + 100 0,113 = 176,3.
: 601,7
PDV 575, . , , .
|
|
PVV
19 lOBase-T: 10,5.
10 lOBase-T: 8.
2 lOBase-FL: 2.
3 lOBase-FL: 2.
12 lOBase-FL: 2.
14 lOBase-T: 8.
21 lOBase-T: 10,5.
:43
PVV 43, 49 .
2. Fast Ethernet.
30 Fiber Halfdup FX | |
100 UTP(5) T4 | |
70 UTP(5) TX | |
100 UTP(5) TX | |
25 UTP(5) T4 | |
100 UTP(5) TX | |
60 UTP(3) T4 | |
2000 Fiber Fulldup FX | |
10 UTP(5) TX | |
210 Fiber Halfdup FX | |
200 Fiber Halfdup FX | |
50 Fiber Fulldup FX |
DTE-DTE
1OOBaseTX | 5 UTP | 100 |
1OOBaseFX | 62,5/125 | 412 () 2 ( ) |
100BaseT4 | 3,4 5 UTP | 100 |
SW1SW2 390 , , 412 .
1.
S1S2: 100 + 70 = 170
S1-SW1: 30+70 = 100
S2-SW1: 100+30 = 130
2.
S3S4: 125
S3S5: 85
S4S5: 160
S3SW1: 125
S4SW1: 200
S5SW1: 160
3.
S6S7: 410
S6S8: 260
S7S8 250
S6 SW2:220
S7 SW2: 210
S8 SW2: 60
1 170 S1 S2.
2 200 S4 SW1.
3 410 S6 S7.
1
, | , | |
() | ||
(FX) | ||
100 () 160 (FX) | ||
100 () 136 (FX) |
1 .
2 .
3 .
,
bt 1 | ||
UTP Cat 3 | 1,14 bt | 114 bt (100 ) |
UTP Cat 4 | 1,14 bt | 114 bt (100 ) |
UTP Cat 5 | 1,112 bt | 111,2 bt (100 ) |
STP | 1,112 bt | 111,2 bt (100 ) |
1,0 bt | 412 bt (412 ) |
.
,
TX/FX | 100 bt |
4 | 138 bt |
TX/FX 4 | 127 bt |
PDV .
|
|
1 ( S2 SW1).
S2H1: 100x1.14 = 114 bt
H1: 140 bt
H1SW1: 30x1.112= 33.36 bt
, : 127 bt
PDV = 414.4 bt
2 ( S4 SW1).
S4H2: 100x1 = 100 bt
H2: 140 bt
H2SW1: 100x1= 100 bt
, : 127 bt
PDV = 467 bt
3 ( S6 SW2).
S6H3: 210x1.112 = 233.5 bt
H3: 140 bt
H3SW2: 10x1.14 = 11.4 bt
, : 127 bt
PDV = 512 bt
PDV 575 bt. ,
:
Ethernet, .