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Platform Notes: The hme Fast
Ethernet Device Driver
Sun Microsystems Computer Company
2550 Garcia Avenue
Mountain View, CA 94043 USA
415 960-1300 fax 415 969-9131
Part No: 802-5333-10
Revision A, May 1996
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Copyright 1996 Sun Microsystems, Inc., 2550 Garcia Avenue, Mountain View, California 94043-1100 U.S.A. All rights reserved. This product or document is protected by copyright and distributed under licenses restricting its use, copying, distribution, and decompilation. No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors, if any. ® Portions of this product may be derived from the UNIX system, licensed from Nove
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Copyright 1996 Sun Microsystems Inc., 2550 Garcia Avenue, Mountain View, Californie 94043-1100, U.S.A.Tous droits réservés. Ce produit ou document est protégé par un copyright et distribué avec des licences qui en restreignent l’utilisation, la copie, la distribution, et la décompilation. Aucune partie de ce produit ou de sa documentation associée ne peut être reproduite sous aucune forme, par quelque moyen que ce soit, sans l’autorisation préalable et écrite de Sun et de ses bailleurs de licenc
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Contents 1. Introduction to thehme Fast Ethernet Device Driver . . . . . . . 1 Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Typographic Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Ordering Sun Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Thehme Device Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hardware Overview . . . . . . . . . . . . . . . . . . . . . . . . .
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Operational Mode Parameters . . . . . . . . . . . . . . . . . . . . . . . . 13 Defining the Number of Back-to-Back Packets To Transmit 15 Reporting Transceiver Capabilities . . . . . . . . . . . . . . . . . . . . 15 Reporting the Link Partner Capabilities . . . . . . . . . . . . . . . . 16 4. Setting Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Parameter Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Setting Parameters
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Setting Parameters in the/etc/system File . . . . . . . . . . . . . . 25 ▼ To set theipg1 to 10 andipg2 to 5 when you reboot . 26 Setting Parameters Using thehme.conf File. . . . . . . . . . . . . . . 27 ▼ To setipg1 to 20 andipg2 to 10 for theSUNW,hme device in SBus slot 0xe . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Contents vii
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viii Platform Notes: The hme Fast Ethernet Device Driver—May 1996
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Introduction to thehme Fast Ethernet Device Driver 1 This book describes how to configure thehme driver for the Sun Ultra 1 Series systems, the Sun Ultra 2 Series system, the Ultra Enterprise 3000, 4000, 5000, and 6000 systems, the SunSwift SBus Adapter, and the SunFastEthernet Adapter 2.0. To configure thehme driver you can use the ndd utility to set the parameters. If you use thendd utility, the parameter values are effective until you reboot the system. To keep the values in effe
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1 • Solaris Reference Manual for SMCC-Specific Software: Explains the following man pages: • ndd (1M) man page summarizes information on how to use thendd utility • prtconf (1M),system (4), anddriver.conf (4) man pages describe information about entering parameter values into the/etc/system file and thehme.conf file Typographic Conventions Table 1-1 describes the typographic conventions used in this book. Table 1-1 Typographic Conventions Typeface or Symbol Meaning Example AaBbCc123 The names of co
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1 Shell Prompts in Command Examples Table 1-2 shows the default system prompt and superuser prompt for the C shell, Bourne shell, and Korn shell. Table 1-2 Shell Prompts Shell Prompt C shell machine_name% C shell superuser machine_name# Bourne shell and Korn shell $ Bourne shell and Korn shell # superuser Ordering Sun Documents The SunDocs Order Desk is a distribution center for Sun Microsystems technical documentation. You can use major credit cards and company purchase orders. You can order do
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1 Sun Welcomes Your Comments Please use the Reader Comment Card that accompanies this document. We are interested in improving our documentation and welcome your comments and suggestions. If a card is not available, you can also email or fax your comments to us. Please include the part number of your document in the subject line of your email or fax message. • Email: smcc-docs@sun.com • Fax: SMCC Document Feedback 1-415-786-6443 4 Platform Notes: The hme Fast Ethernet Device Driver—May 1996
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Thehme Device Driver 2 The hme device driver handles theSUNW,hme device on these hardware devices: • SunSwift SBus Adapter • SunFastEthernet Adapter 2.0 • Sun Ultra 1 Creator Series systems • Sun Ultra 2 Series system • Ultra Enterprise 3000, 4000, 5000, and 6000 systems This chapter gives a hardware overview of theSUNW,hme device, provides information on the operating speeds and modes for theSUNW,hme device, and discusses auto-negotiation, the internal transceiver, and the external transceiver
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2 In addition to the RJ-45 connector, a Media Independent Interface (MII) connector, which is an Ultra DB 40 connector, is also provided on Sun systems. The MII connects to an external transceiver that may use any physical media, such as copper or fiber as specified in the 100BASE-TX standard. When an external transceiver is connected to the MII, the driver selects the external transceiver and disables the internal transceiver. The external transceiver may also support the 100BASE-T4 standard, w
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2 • Selects the highest common denominator mode of operation based on the following priorities: • 100 BASE-T4 • 100 Mbps, full-duplex • 100 Mbps, half-duplex • 10 Mbps, full-duplex • 10 Mbps, half-duplex The link partner is the networking device (system, Ethernet hub, or Ethernet switch) at the other end of the link or cable. If theSUNW,hme device is connected to a remote system or interface that is not capable of auto- negotiation, the system automatically selects the correct speed and half-du
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2 • If the external transceiver supports auto-negotiation, the driver uses the auto-negotiation feature to select the link speed and mode. • If the external transceiver does not support auto-negotiation, the driver selects the highest priority mode supported by the transceiver. You can also manually select the speed and mode of the link. For example, two transceivers might not support the same mode and speed. Therefore, you must select the highest mode and speed that both transceivers support
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Parameter Definitions 3 This chapter describes the parameters and settings for thehme device driver. Driver Parameter Values and Definitions The following sections describe thehme driver parameters, which are listed in Table 3-1. Table 3-1 hme Driver Parameter, Status, and Descriptions Parameter Status Description transceiver_inuse Read only Defines the current status link_status Read only Defines the current status link_speed Read only Defines the current status link_mode Read only Defines the curren
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3 Table 3-1 hme Driver Parameter, Status, and Descriptions (Continued) Parameter Status Description adv_100hdx_cap Read and write Operational mode parameter adv_10fdx_cap Read and write Operational mode parameter adv_10hdx_cap Read and write Operational mode parameter autoneg_cap Read only Local transceiver auto negotiation capability 100T4_cap Read only Local transceiver capability of the hardware 100fdx_cap Read only Local transceiver capability of the hardware 100hdx_cap Read only Local trans
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3 Defining the Current Status The read-only parameters described in Table 3-2 explain the operational mode of the interface. These parameters define the current status. Table 3-2 Read-Only Parameters Defining the Current Status Parameter Values Description transceiver_inuse 0 = Internal transceiver 1 = External transceiver link_status Current link status 0 = Link down 1 = Link up link_speed Valid only if the link is up 0 = 10 Mbps 1 = 100 Mbps link_mode Valid only if the link is up 0 = Half duplex
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3 By default, the driver setsipg1 to 8-byte time andipg2 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 either 100 Mbps or 10 Mbps.) If your network has systems that use longer IPG (the sum ofipg1 andipg2) and if those machines seem to be slow in accessing the network, increase the values ofipg1 andipg2 to match the longer IPGs of other machines. Defining an Additional Delay Before Transmitting a Packet Using
