Jumbo Frames

TABLE 4-9PCI Bus Interface Parameters

ParameterDescription

rx_dma_weight Determines the multiplication factor for granting credit to the RX side during a weighted round robin arbitration. Values are 0 to 3. (Default=0)

infinite_burst Enables the infinite burst capability to be utilized. When this is in effect and the system supports infinite burs, the adapter does not free the bus until complete packets are transferred across the bus. Values are 0 or 1. (Default=0)

disable_64bit Switches off 64-bit capability of the adapter.

Values are 0 or 1. (Default=0, which enables 64 bit capability)

The variable accept-jumboenables the driver to instruct the upper layers that the driver is operating in Jumbo-frame mode.

Note – Jumbo-frame mode is not supported in systems running Solaris 9 x86 software.

TABLE 4-10accept-jumbo Parameters

Parameter	Values	Description

accept-jumbo	1	Enables jumbo frames mode and sets MTU
		to greater than 1500.
	0	Jumbo frames is not enabled. MTU is at
		1500.

In the Solaris 8 Operating System, accept-jumbo=1does not take effect on the next ifconfig. To get the maximum MTU setting use the following command:

#ifconfig ce0 mtu 9194

In the Solaris 9 Operating System, accept-jumbo=1takes effect on next ifconfig, and automatically sets the MTU to 9194.

Although jumbo frames is configurable in 10/100 mode, jumbo frames is only supported in the Gigabit (1000Mbps) mode. Configuring jumbo frames enables the Ethernet interfaces to send and receive packets of up to 9216 bytes. However, the actual transfer size depends on the switch capability.

Chapter 4 Configuring Driver Parameters 45

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.

Sun Microsystems GigaSwift Ethernet Adapter manual Jumbo Frames, 10accept-jumbo Parameters

Models: GigaSwift Ethernet Adapter

TABLE 4-9PCI Bus Interface Parameters

Jumbo Frames

TABLE 4-10accept-jumbo Parameters

GigaSwift Ethernet Adapter specifications