Overview; Advanced Properties - Linksys EG1032 User Manual

Advanced Properties

Overview

These settings are provided to help troubleshoot the Adapter and to help con-
figure the Adapter if your situation involves unusual circumstances. The
default settings of the Adapter should work in most cases. These settings
should not be altered without a thorough understanding of the specifics of
your network. If you change ANY of these settings, there is a good possibility
that the Adapter will not function properly and/or not be recognized by the
network.
Auto Negotiate
Capabilities: (Enable
or Disable)
Auto negotiates LAN
speed and duplex.
IEEE Compliance
Enable: (Enable or
Disable)
Choosing Disable may
prevent the device from
commmunicating with
other devices set to
operate on the IEEE
Standard.
Interrupt Hold Off
Time: 1 (0-255)
Specifies the time the
adapter will wait for a
busy interrupt request.
Higher values indicate
a longer wait time for
the IRQ to be free
before repeating a request.
Jumbo Frame Size: 0 (0 - 65,535)
The IEEE 802.3 standard specifies the maximum size of Ethernet frames at
1,518 bytes. A jumbo frame is simply one having up to 65,535 bytes. In a
case where a server has to receive a massive amount of data, the required
overhead of processing the individual frames could have negative effects on
the server's CPU, and ultimately on overall server performance.
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Instant Gigabit Series Instant Gigabit Network Adapter (EG1032/EG1064)
Network Address:
Allows the user to configure the network address of the adapter, rather than
using the one in ROM. If not specified, the address on the adapter will be
used.
Network Media:
Specifies the maximum speed at which the adapter will try to negotiate a
connection.
Offload Rx IP Checksum: Enabled
Offload Rx TcP Checksum: Enabled
Offload Rx UDP Checksum: Enabled
Offload Tx IP Checksum: Enabled
Offload Tx TCP Checksum: Enabled
Offload Tx UDP Checksum: Enabled
The above commands allow offloading various Tx and Rx processes to the
Instant Gigabit Network Adapter, freeing up system resources.
Pause Frames Count:
Flow control uses pause frames to communicate buffer status between linked
transmitting and receiving devices (transmitters and receivers). A receiver
sends a pause frame to tell a transmitter to stop transmitting data frames for a
specified period, allowing the receiver's input port buffers to empty.
Pause Frames High Threshold:
When a transmitter receives pause frames, it suspends transmission for the
specified period or until the High Threshold is reached.
Receive Drain Threshold:
Number of bytes in the current packet being drained from the rxDataFIFO
that are in fact currently in the rxDataFIFO (Note: packets larger than FIFO
size, this number will never be greater than the FIFO size).
Transmit Buffer Count: 1024 (64 - 4096)
This specifies number of transmit buffers to configure.
Transmit Drain Threshold:
This sets the maximum packet size that can be handled by the adapter since
transmit packets cannot span buffers. If not specified, this will default
depending on the amount of SRAM available and the maximum packet size
supported by the adapter.
Transmit Fill Threshold:
This setting determines the maximum number of transmits which may be
queued.
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