1001 Secrets for Windows NT Registry
(Publisher: 29th Street Press)
Author(s): Tim Daniels
ISBN: 1882419685
Publication Date: 12/01/97

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NWLink

I-390 These registry parameters let you tweak IPX/SPX. One way to think of it is that you can use these entries to manipulate the actual network adapters that NWLink is bound to. If you are troubleshooting the network adapter running NWLink, this is the place to be.

Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Services\NWLink\NetConfig\ Driver01
Value Name: MaxPktSize
Data Type: REG_DWORD
Value: 0

This value controls the largest frame size that the network adapter allows. If the value is set to 0, NWLink obtains this value from the network it is running on. Otherwise, you may set a limit that the adapter doesn’t support. This setup can be particularly useful if you are on a fast network and the station you are talking with is on a slower connection.

I-391 Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Services\NWLink\NetConfig\ Driver01
Value Name: NetworkNumber
Data Type: REG_DWORD
Value: 0

If this value is set to 0, NWLink gets the value from the network it is currently running on. For those of you who were or are NetWare administrators, this value sets the internal IPX network number. The value is stored in hexadecimal and is 8 hex characters long; for example, AAAABEEF.

I-392 NWLink supports five different packet types. If you need to set the specific packet type for an adapter, this registry parameter lets you specify the packet types for each adapter.

Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Services\NWLink\NetConfig\ Driver01
Value Name: PktType
Data Type: REG_DWORD
Value: 3

Valid values are

0 Ethernet II
1 Ethernet 802.3
2 802.2
3 SNAP
4 Arcnet

I-393 The next two values control the routing information protocol (RIP) as it pertains to NWLink. NWLink uses RIP primarily to keep a list of remote machine names that it can use for name resolution. The list can affect the speed at which your computer can locate other computers on the network.

Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Services\NWLink\NetConfig\ Driver01
Value Name: RipAgeTime
Data Type: REG_DWORD
Value: 0

This value determines how many minutes NWLink waits before requesting a RIP update for a particular entry. The value is reset when a valid RIP announcement is received.

I-394 Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Services\NWLink\NetConfig\ Driver01
Value Name: RipUsageTime
Data Type: REG_DWORD
Value: 0

This value controls the length of time a current RIP cache entry is valid. Modifying this parameter with the RipAgeTime parameter lets you reduce your overall RIP-based traffic on a heavily congested network.


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