Sun Microsystems none manual Defining the Number of Back-to-Back Packets To Transmit

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Defining the Number of Back-to-Back Packets To Transmit

The pace_size parameter (see Table 3-6) defines the maximum number of back-to-back packets you can transmit at one time. If the value is zero, there is no limit to the number of back-to-back packets that can be transmitted.

Table 3-6Back-to-back Packet Transmission Capability

Parameter Values Description

pace_size 1 to 255 = Number of back-to-back packets transmitted at one time

0= No limit to the number of back-to-back packets that can be transmitted (default)

Reporting Transceiver Capabilities

Table 3-7 describes the read-only transceiver capabilities (either the internal transceiver or the external transceiver), whichever is selected.

Table 3-7Read-Only Transceiver Capabilities

Parameter

Values

Description

autoneg_cap

 

Local transceiver capability of the

 

 

hardware

 

0

= Not capable of auto-negotiation

 

1

= Auto negotiation capable

 

 

 

100T4_cap

 

Local external transceiver capability of

 

 

the hardware

 

0

= Not 100BASE-T4 capable

 

1

= 100BASE-T4 capable

 

 

 

100fdx_cap

 

Local transceiver capability of the

 

 

hardware; initialized at startup

 

0

= Not 100Mbit/sec full-duplex capable

 

1

= 100Mbit/sec full-duplex capable

 

 

 

Parameter Definitions

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Contents PlatformNotesThehmeFast Ethernet Device Driver Please Recycle Page Page Contents Setting Parameters Contents Vii Viii Related Documentation Introduction to the hme Fast Ethernet Device DriverDescribes the typographic conventions used in this book Typographic ConventionsOrdering Sun Documents Shell Prompts in Command ExamplesSun Welcomes Your Comments Hardware Overview Hme Device DriverAuto-Negotiation Operating Speeds and ModesExternal Transceiver Internal TransceiverPlatform Notes The hme Fast Ethernet Device Driver-May Driver Parameter Values and Definitions Parameter DefinitionsRead only Local transceiver auto negotiation Capability Inter-Packet Gap Parameters Defining the Current StatusLancemode Defines the lancemode and ipg0 parameters Operational Mode ParametersSelecting the Internal or External Transceiver Reporting Transceiver Capabilities Defining the Number of Back-to-Back Packets To TransmitDescribes the read-only link partner capabilities Reporting the Link Partner Capabilities= No 100Mbit/sec half-duplex transmission Platform Notes The hme Fast Ethernet Device Driver-May Parameter Options Setting ParametersTo specify the device instance for the ndd utility Setting Parameters Using nddIdentifying Device Instances To modify a parameter value Non-Interactive and Interactive ModesTo display the value of a parameter To modify a parameter value in interactive modeRefer to -1 through 3-8 for parameter descriptions To list all the parameters supported by the hme driverTo set the mode to auto-negotiation Setting Forced ModeTo set the TCP hiwater marks for best performance Setting Parameters in the /etc/system FileConfiguring TCP/IP for Maximum Performance To benchmark the TCP/IP throughputTo set the ipg1 to 10 and ipg2 to 5 when you reboot Setting Parameters Using the hme.conf File Specify name=hme and class=sbus

none specifications

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