NET.CFG Options Reference
Link Driver Option
Syntax | max frame size number |
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| If the line speed is 16 Mbps, the value for number |
| must be between 638 and 17,954. If the line speed is 4 |
| Mbps, the value must be between 638 and 4464. |
| The value must include the number of bytes for the |
| data packet (usually 1, 2, 4, or 8KB), and for the |
| largest possible header (currently, 52 bytes LAN |
| header + 74 bytes protocol header = 126 bytes). |
| For example, to use 2KB data packets, you would |
| calculate the value for number as |
| 2048 + 52 + 74 = 2174 |
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Default | The NTR2000.COM driver’s default size is 4222 bytes. But if |
| your network board has 8 KB of shared RAM available, the |
| default size is 2174 bytes. |
| The LANSUP.COM driver’s default is 1150 bytes. But |
| if you’re using the IBM LAN Support Program with |
| an Ethernet network board driver, the maximum size |
| is 1496 bytes. |
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Example | To specify the maximum frame size of an NTR2000 LAN |
| driver, you would place the following line in your NET.CFG |
| file: |
| link driver ntr2000 |
| max frame size 2174 |
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If you are running MS Windows in enhanced mode, the VIPX.386 device driver requires the maximum frame size to be less than 8000 bytes. If the frame size exceeds 8000 bytes, network communication fails.
MEM [#1 #2] hex_starting_address [hex_length]Specifies a memory range to be used by the network board.
Syntax | mem [#1 #2] hex_starting_address [hex_length] |
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