Cabletron Systems T2015 Installationsanleitung PDF herunterladen (Seite 144)

134 Installation Guide for Clients

The entries for NetBEUI that you are most likely to adjust are sessions,

ncbs, maxtransmits, mintransmits, packets, windowerrors, and

selectors.

You can change the entry values on an OS/2 workstation to the default

MS-DOS values. Changing to the default MS-DOS values conserves

memory and other system resources.

Entries in the [netbeui] section of the LAN Manager PROTOCOL.INI

file have the following meanings:

adaptrate

Specifies the time in milliseconds between runs of the adaptive

window algorithm. For each link, the NetBEUI driver uses the

algorithm to match the maxin and maxout values with the remote

station’s values as closely as possible. The algorithm also considers

the conditions of the link (such as adapter receiver buffers, load, and

so on).

When no dropped packets are detected, the adaptive window

algorithm increases the send window (see maxout). If dropped

packets are detected (more than the value of windowerrors), the

algorithm decreases the send window. Similarly, the algorithm adjusts

the receive window based on the timeout expiration of the t2 timer.

Adaptrate should be large in relation to t1 and t2—usually above

one second—but it can be smaller than ti.

A value of 0 turns off the algorithm, meaning that the maxin and

maxout values never change.

bindings

Names the driver(s) that NetBEUI binds to. The NetBEUI driver can

bind to as many as twelve media-access control drivers. Use commas

to separate the driver names.

datagrampackets

Specifies the number of data descriptors to allocate for packetizing

NetBIOS datagrams (both broadcast and directed) into UI-frames.

The NetBEUI driver sends these UI-frames when performing

SEND.DATAGRAM and SEND.BROADCAST.DATAGRAM NCB

functions.

Increase the value of this entry if the NetBEUI driver is sending a

large number of datagrams—for example, if this computer sends a lot

of broadcast messages. The most common use of the

datagrampackets entry in LAN Manager is the server

announcement, which typically uses one data descriptor every minute

and returns it immediately.

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Cabletron Systems T2015 Installationsanleitung Seite 144