HP CommonIO Products Manual de usuario descargar pdf (Pagina 26)

Installation

Before You Install the Software

Chapter 226

Shortcut Method Assuming B = P for all VCs, TM can be rounded to:

• If B < 512, TM = approx. (1,536 + (2 x W + 2) x B) x No. of VCs

• If B > or = 512, TM = approx. (2 x W + 5) x B x No. of VCs

The following table (in bytes/VC) provides a quick guide:

Example 2-1 Example:

A system has two X.25 cards configured as follows:

Card 1:

Window = 2

Packet size = 1024

Socket buffer size = 4096 (default)

200 VCs are used

Card 2:

Window = 4

Packet size = 128

Socket buffer size = 4096 (default)

400 VCs are used

Table 2-1

Buffer Size (B) = Packet Size (P) in bytes

128 256 512 1024 2048 4096

Window (W)

size

1 2 K 2.5 K 3.5 K 7 K 14 K 28 K

2 2.3 K 3 K 4.5 K 9 K 18 K 36 K

3 2.5 K 3.5 K 5.5 K 11 K 22 K 44 K

4 2.8 K 4 K 6.5 K 13 K 26 K 52 K

5 3 K 4.5 K 7.5 K 15 K 30 K 60 K

6 3.3 K 5 K 8.5 K 17 K 34 K 68 K

7 3.5 K 5.5 K 9.5 K 19 K 38 K 76 K

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 260 261

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HP CommonIO Products Manual de usuario Pagina 26