Avaya Configuring DLSw Services Manual do Utilizador descarregar pdf (Página 154)

Configuring DLSw Services

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Parameter: TCP Window Size

Path:

Configuration Manager > Protocols > DLSw > Advanced > Global

Default: 8000

Range: 5000 to 64000 (octets)

Function: Specifies (in octets) the maximum amount of DLSw data that the local and

remote TCP entities can send before requiring an acknowledgment, or can

receive before acknowledging. The TCP Window Size parameter informs

DLSw about how much data can be outstanding on a TCP connection. The size

of the window affects performance, latency, flow control, and memory usage. A

larger window causes less flow control to occur with a possible increase in

latency. Editing the TCP Window Size parameter affects new TCP session

establishment only. Existing sessions are unaffected.

Instructions: Type any valid number of octets. Generally, networks with slower line speeds

require smaller window sizes, while networks with faster line speeds benefit

from larger windows. The default value is acceptable for most networks. A TCP

Window Size setting of 5000 octets may be appropriate for low-speed lines (or

networks running over low speed lines). For high-speed lines, you may want to

increase this value, or use the default value.

The default value is based on both NetBIOS and SNA traffic. SNA and

NetBIOS can have frame sizes up to 4 KB, but the default virtual ring MTU

limits the frame size on the network to 1500 bytes (unless changed). Keep the

window as small as possible. This allows the most consistent response time

when packets are not excessively queued in TCP. Selection of this parameter

depends on the WAN speed and frame size distribution.

MIB Object ID: 1.3.6.1.4.1.18.3.5.1.5.1.4

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Avaya Configuring DLSw Services Manual do Utilizador Página 154