Note – If a parameter’s initial setting is 0, it cannot be changed. If you try to change the setting, it will revert back to 0.

If all these parameters are set to 1, autonegotiation uses the highest speed possible. If all these parameters are set to 0, you receive the following error message:

NOTICE: Last setting will leave ce0 with no link capabilities.

WARNING: ce0: Restoring previous setting.

Flow Control Parameters

The ce device is capable of sourcing (transmitting) and terminating (receiving) pause frames conforming to the IEEE 802.3x Frame Based Link Level Flow Control Protocol. In response to received flow control frames, the ce device can slow down its transmit rate. The ce device is capable of sourcing flow control frames by requesting the link partner to slow down, provided that the link partner supports this feature. By default, the driver advertises both transmit and receive pause capability during autonegotiation.

TABLE 4-3provides flow control keywords and describes their function.

TABLE 4-3Read-Write Flow Control Keyword Descriptions

KeywordDescription

adv_asmpause_cap The adapter supports asymmetric pause, which means it

can pause only in one direction.

0=Off (default)

1=On

adv_pause_cap This parameter has two meanings, each depending on the value of adv_asmpause_cap. (Default=0)

•If adv_asmpause_cap = 1 while adv_pause_cap = 1, pauses are received.

•If adv_asmpause_cap = 1 while adv_pause_cap = 0, pauses are transmitted.

•If adv_asmpause_cap = 0 while adv_pause_cap = 1, pauses are sent and received.

•If adv_asmpause_cap = 0, then adv_pause_cap determines whether Pause capability is on or off.

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

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Sun Microsystems GigaSwift Ethernet Adapter manual Flow Control Parameters, 3Read-Write Flow Control Keyword Descriptions
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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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