Sun Microsystems none

viii Platform Notes: The hme Fast Ethernet Device Driver—May 1996

Contents

Main Page Page Page Contents Page Page Page Introduction to thehme Fast Ethernet Device Driver 1 Related Documentation Typographic Conventions Shell Prompts in Command Examples Ordering Sun Documents Sun Welcomes Your Comments Thehme Device Driver 2 Hardware Overview Operating Speeds and Modes Auto-Negotiation Internal Transceiver External Transceiver Page Parameter Denitions 3 This chapter describes the parameters and settings for the hme device driver. Driver Parameter Values and Denitions The following sections describe the hme driver parameters, which are listed in Table3-1. Page Dening the Current Status Inter-Packet Gap Parameters Dening an Additional Delay Before Transmitting a Packet Using lance_mode and ipg0 Table3-4 denes the lance_mode and ipg0 parameters. Operational Mode Parameters Table3-5 describes the operational mode parameters and their default values. Selecting the Internal or External Transceiver Dening the Number of Back-to-Back Packets To T ransmit Reporting Transceiver Capabilities Reporting the Link Partner Capabilities Table3-8 describes the read-only link partner capabilities. Page Page Setting Parameters 4 Parameter Options Setting Parameters Using ndd Identifying Device Instances To specify the device instance for the ndd utility Non-Interactive and Interactive Modes Using the ndd Utility in Non-Interactive Mode To modify a parameter value To display the value of a parameter Using the ndd Utility in Interactive Mode To modify a parameter value in interactive mode To list all the parameters supported by the hme driver Typendd /dev/hme \?. (Refer to Table 3-1 through 3-8 for parameter descriptions. ) Setting Forced Mode To select one of the ve local transceiver capabilities and set the mode to forced mode Auto-Negotiation Mode To set the mode to auto-negotiation Conguring TCP/IP for Maximum Performance Setting Parameters in the /etc/system File To set the ipg1 to 10 and ipg2 to 5 when you reboot Setting Parameters Using the hme.conf File To set ipg1 to 20 and ipg2 to 10 for the SUNW,hme device in SBus slot 0xe