By default, autonegotiation mode is enabled for these link parameters. When either of these parameters are in autonegotiation mode, the vca device communicates with the link partner to negotiate a compatible value and flow control capability. When a value other than auto is set for either of these parameters, no negotiation occurs and the link parameter is configured in forced mode. In forced mode, the value for the speed parameter must match between link partners. See “Enabling Autonegotiation or Forced Mode for Link Parameters With the OpenBoot PROM” on page 41.

▼To Disable Autonegotiation Mode

If your network equipment does not support autonegotiation, or if you want to force your network speed, duplex, or link-clockparameters, you can disable the autonegotiation mode on the vca device.

1.Set the following driver parameters to the values that are described in the documentation delivered with your link partner device (for example, a switch):

■adv-1000fdx-cap

■adv-1000hdx-cap

■adv-100fdx-cap

■adv-100hdx-cap

■adv-10fdx-cap

■adv-10hdx-cap

■adv-asmpause-cap

■adv-pause-cap

See TABLE 3-2for the descriptions and possible values of these parameters.

2.Set the adv-autoneg-capparameter to 0.

#ndd -set /dev/vcaNadv-autoneg-cap 0

When you change any ndd link parameter, a message similar to the following appears:

link up 1000 Mbps half duplex

Note –If you disable autonegotiation, you must enable the speed, duplex, and link-clock(1000 Mbps only) parameters to operate in forced mode. For instructions, see “Enabling Autonegotiation or Forced Mode for Link Parameters With the OpenBoot PROM” on page 41.

Chapter 3 Configuring Driver Parameters 37

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Sun Microsystems 4000 manual To Disable Autonegotiation Mode, Set the adv-autoneg-capparameter to
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4000 specifications

Sun Microsystems, a pivotal player in the computing industry during the late 20th and early 21st centuries, was renowned for its innovative hardware and software solutions. Among its notable offerings were the Sun-6000, Sun-5000, and Sun-4000 series, powerful workstations and servers designed for a range of enterprise-level applications.

The Sun-6000 series, introduced in the early 1990s, marked a significant advancement in computing performance. These systems were built on the SPARC architecture, which facilitated high levels of processing power and multitasking capabilities. One of the main features of the 6000 series was its scalability, allowing organizations to increase their processing power by adding more modules. It also offered robust graphics performance, making it ideal for scientific visualization and complex data analysis.

Next in line was the Sun-5000 series. Launched shortly after the 6000 series, the 5000 line was celebrated for its reliability and ease of management. This series emphasized a balanced architecture, which combined processing capabilities with ample memory and storage options. Key characteristics included support for multiple processors, leading to improved performance for demanding applications. Additionally, the 5000 systems featured advanced input/output capabilities, ensuring fast data transfers—crucial for database applications and web servers.

Finally, the Sun-4000 series targeted businesses seeking affordable yet potent computing solutions. These servers boasted a modular design, allowing for easy upgrades and maintenance. The 4000 series was particularly notable for its support for various operating systems, including SunOS and Solaris. These systems were engineered to handle a range of workloads, from enterprise resource planning to web hosting, while still fitting into a value-driven budget.

Across all three series, Sun Microsystems prioritized compatibility and integration, ensuring that each system offered seamless connectivity with Sun's software solutions and third-party applications. Their commitment to open standards and interoperability set them apart in the competitive landscape of enterprise computing. Additionally, the use of high-quality components lent the systems durability, making them a wise investment for organizations looking to future-proof their IT infrastructure.

In summary, the Sun-6000, 5000, and 4000 series exemplified Sun Microsystems' ethos of innovation and reliability. These powerful systems catered to diverse business needs, setting benchmarks in performance and functionality that continue to influence modern computing.
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