RAD Data comm ASMI-450 Bedienungsanleitung PDF herunterladen (Seite 155)

RADview-HPOV/ATM User’s Manual Chapter 5 RADview-HPOV for ATM

VPI/VCI Range for ACE-101 5-7

5.7 VPI/VCI Range for ACE-101

The Virtual Path/Virtual Channel Indicator (VPI/VCI) range determines the number

of bits used in the VP/VC indicator.

The VP/VC range determines the number of VPCs or VCCs available.

VPI 0-15 are allocated for VCCs and other VPIs are allocated for VPCs.

The range of the VPI and VCI bits respectively is determined by the variables:

VPI Bits: atmInterfaceMaxActiveVpiBits (5, 6, 7, 8)

if atmConfAtmIfVpiVciLimit = bits 15(2):

VCI Bits atmInterfaceMaxActiveVciBits (7, 8, 9, 10)

if atmConfAtmIfVpiVciLimit = bits 17(3)

VCI Bits atmInterfaceMaxActiveVciBits (9, 10, 11, 12)

Table 5-2. VPC Ranges

VP bits VC bits VPI Range VCs Passing through

VPCs

Maximum number of

VPCs available

10 - 0-255 All 256

8 7 0-239 0-127 240

7 8 0-127 0-255 128

6 9 0-63 0-511 64

5 10 0-31 0-1023 32

Table 5-3. VCC Ranges

VP bits VC bits VPI Range VCI Range Maximum number of

VCCs available

10 -

8 7 0-255 0-127 48

7 8 0-127 0-255 256

6 9 0-63 0-511 256

5 10 0-31 0-1023 256

When the user sets the VPI bit and VCI bit values, the VP and VC ranges in all the

dialog boxes are affected as follows:

VPI 0…(2**(atmInterfaceMaxActiveVpiBits) - 1)

VCI 0…(2**(atmInterfaceMaxActiveVciBits) - 1)

1 2 ... 150 151 152 153 154 155 156 157 158 159 160 ... 165 166

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RAD Data comm ASMI-450 Bedienungsanleitung Seite 155