Avaya Configuring DLSw Services Bedienungsanleitung PDF herunterladen (Seite 106)

Configuring DLSw Services

5-6

Parameter: TCP Window Size

Default: 8000 (octets)

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.

Instructions: Type in any valid number of octets.

If the TCP Window Size value for DLSw services is less than the global

TCP Max Window value, DLSw uses its own TCP Window Size.

If the TCP Window Size for DLSw services is greater than the global TCP

Max Window size, Site Manager prompts you to make one of the

following choices:

• Increase the global TCP Max Window size to the TCP Window Size

set for DLSw services.

• Accept the global TCP Max Window size as the TCP Window Size

for DLSw services on the router.

MIB Object ID: 1.3.6.1.4.1.18.3.5.1.5.1.4

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

can have frame size up to 4 KB, but the default virtual ring MTU limits the

frame size on the TCP/IP network to 2 KB (unless changed). SNA uses small

frames so this window size can be smaller with SNA-only environments than in

environments which include NetBIOS trafﬁc. Keep the window as small as

possible. This allows the best (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.

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Avaya Configuring DLSw Services Bedienungsanleitung Seite 106