▼To Disable Autonegotiation Mode

If your network equipment does not support autonegotiation, or if you want to specify your network speed, you can set autonegotiation to off on the ce device.

Note – Disabling autonegotiation mode can cause collisions.

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

■adv-1000fdx-cap

■adv-100fdx-cap

■adv-100hdx-cap

■adv-10fdx-cap

■adv-10hdx-cap

■adv-asmpause-cap

■adv-pause-cap

See TABLE 4-2for the descriptions and possible values of these parameters.

Note – According to IEEE 802.3 specifications, when using 1000 Mbps speed over copper media, autonegotiation is not optional. In the absence of autonegotiation, (for example, while using Forced mode), link syncing between link partners may not happen and the link may not come up.

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

#ndd -set /dev/ce adv-autoneg-cap 0

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

xcvr addr:0x00 - link up 100 Mbps full duplex

Setting Parameters Using the ce.conf File

Specify the driver parameter properties for each device by creating a ce.conf file in the /platform/sun4u/kernel/drv directory. Use a ce.conf file when you need to set a particular parameter for a device in the system. The parameters you can set are the read and write parameters listed in “GigaSwift Ethernet Driver Parameter Values and Definitions” on page 38.

50 Sun GigaSwift Ethernet Adapter Installation and User’s Guide • August 2004

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Sun Microsystems GigaSwift Ethernet Adapter Setting Parameters Using the ce.conf File, To Disable Autonegotiation Mode
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GigaSwift Ethernet Adapter specifications

The Sun Microsystems GigaSwift Ethernet Adapter is a high-performance network interface card that was designed to provide advanced connectivity solutions for enterprise environments. Launched in the early 2000s, this adapter caters to the increasing demands for speed and efficiency in networking, especially amidst the rise of data-intensive applications.

One of the standout features of the GigaSwift Ethernet Adapter is its capability to support gigabit Ethernet technology, delivering data transfer rates of up to 1 Gbps. This allows organizations to boost their network throughput significantly, ensuring that bandwidth-intensive applications, such as video conferencing, online collaboration, and large file transfers, can be handled without significant lag or disruption.

The adapter utilizes a PCI-X interface, which enhances its performance compared to traditional PCI interfaces. This allows for higher bandwidth operations, making the GigaSwift suitable for servers and workstations that require robust connectivity. It is backward compatible with earlier Ethernet standards, which means it can seamlessly communicate with existing network infrastructures, preserving investments in legacy technologies.

Another critical characteristic of the GigaSwift Ethernet Adapter is its support for various networking protocols. It is designed to operate in diverse networking environments, supporting both full-duplex and half-duplex modes, which maximizes its efficiency in data transmission. This flexibility makes it an ideal choice for heterogeneous networks where different devices and standards coexist.

Furthermore, the adapter features advanced error detection and correction technologies, ensuring reliable transmission of data over the network. With features such as flow control and jumbo frame support, it enhances the efficiency and performance of large-scale data transfers.

The GigaSwift also comes equipped with diagnostic and management utilities, allowing network administrators to monitor the network performance effectively. This is crucial for identifying bottlenecks and optimizing network configurations to ensure peak operational efficiency.

Overall, the Sun Microsystems GigaSwift Ethernet Adapter is an essential tool for businesses looking to upgrade their networking infrastructure. Its combination of speed, versatility, and reliability allows enterprises to adopt next-generation networking solutions while maintaining compatibility with existing systems, ultimately contributing to a more robust and efficient IT environment.
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