Sun Microsystems Ethernet MMF/UTP Adapter, Инструкция по установке и эксплуатации

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Chapter 3 Configuring
ipge
and
e1000
Driver Parameters 39
You can add the additional delay by setting the
ipg0
parameter from 0 to 255, which
is the media byte time delay.
TABLE 3-8
defines the
enable_ipg0
and
ipg0
parameters.
The
ipge device
supports the programmable interpacket gap (IPG) parameters
ipg1
and
ipg2
. The total IPG is the sum of
ipg1
and
ipg2
. The total IPG is 0.096
microseconds for the link speed of 1000 Mbit/sec.
TABLE 3-9
lists the default values and allowable values for the IPG parameters.
By default, the driver sets
ipg1
to 8-byte time and
ipg2
to 4-byte time, which are
the standard values. (Byte time is the time it takes to transmit one byte on the link,
with a link speed of 1000 Mbit/sec.)
If your network has systems that use longer IPG (the sum of
ipg1
and
ipg2
), and if
those systems seem to be slow in accessing the network, increase the values of
ipg1
and
ipg2
to match the longer IPGs of other machines.
TABLE 3-8
Parameters Defining
enable_ipg0
and
ipg0
Parameter Values Description
enable_ipg0
0
1
enable_ipg0
reset
enable_ipg0
set (Default=8)
ipg0
0 to 255 The additional time delay (or gap) before
transmitting a packet (after receiving the
packet) (Default=8)
TABLE 3-9
Read-Write Interpacket Gap Parameter Values and Descriptions
Parameter Values
(Byte-time) Description
ipg1
0 to 255 Interpacket gap 1 (Default = 8)
ipg2
0 to 255 Interpacket gap 2 (Default = 4)