Node B

Node C

Node A

Link X

Link Y

VPa

VPc

VPI = 2

VPI = 1

VPI = 6

VCI = 4

VPI = 7

VCI = 5

VCI = 3

1

2

Y

6

3

Y

7

4

VP Switching Table (for link X)

VC Switch Table

VPI

Link

out VPI

1

5

2

3

7

4

VPI = 8 bits

VCI = 12bits

ATM Cell

ATM Cell

ATM Cell

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