Installation and New Features Guide (Mac OS)

MacIPX control panel A-7
Use the information in the following tables to set parameters for:
1
MacIPX
1
SPX (Sequenced Packet Exchange)
1
SAP (Service Advertising Protocol)
1
RIP (Routing Information Protocol)
For the following SPX parameters, you can enter any value between 0 and
9999. The values for
Abort Timeout , Listen Timeout , and Verify Timeout apply
only to those SPX connections using the “watchdog,” such as those used by
FileMaker Pro 3.0
MacIPX parameter Function
Disable IPX
Diagnostic Services
Disables the IPX Diagnostic Services, used by some network
management tools. Disabling IPX Diagnostic Services can reduce the
amount of memory that MacIPX uses. Click this parameter if you
don’t use any network management tools, or if your tool doesn’t use
IPX Diagnostic Services.
Maximum Network
Packet Size
Limits the maximum network packet size. The value can’t be greater
than the maximum value supported by the physical network. Enter 0
(zero) to let MacIPX determine for itself what value to use.
Enable IPX
Checksumming
Enables checksumming of IPX packets. The option is unavailable if
the current network doesn’t support IPX checksumming.
SPX parameter Function
Abort Timeout Sets the amount of time that SPX waits, without receiving any response
from the other side of the connection, before it terminates the session.
The timeout number is expressed in ticks (with 60 ticks per second).
The default value is 2400 ticks, or 40 seconds.
Listen Timeout Sets the time that SPX waits, without receiving a packet from the other
side of the connection, before it requests the other side to send back a
packet assuring that the connection is still valid. If SPX hasn’t heard
from the other side of the connection within this time, it sends packets
to the other side asking for verification that the connection still exists.
The default value is 1200 ticks, or 20 seconds.
Verify Timeout Sets the frequency at which SPX sends a packet to the other side of a
connection to inform it that its side is still active. If no packets are
being exchanged on the SPX connection by the software that
established the session, SPX sends packets at regular intervals to make
sure that the connection is still working. The default value is 480 ticks,
or 8 seconds.
Default Retry Count Specifies the maximum number of times that SPX attempts to
retransmit a packet before determining that the packets can’t be sent,
and then closes the connection. The default value is 10 times. An
application can override the value in this field.