AT-2900 Series Gigabit Ethernet Network Adapters Installation Guide

rx_jumbo_desc_cnt

Configures the number of receive descriptors for jumbo frames larger than 1528 bytes. The default is 128 and the valid range is from 1 to 255. When jumbo frames larger than 1528 bytes are used, do not set this parameter to lower than 60 on systems with high network traffic. Setting this parameter higher allows the NIC to buffer larger bursts of jumbo traffic without dropping frames, especially on slower systems. Depending on kernel and system architecture, the driver may require up to 268 bytes per descriptor. Note that each descriptor also requires a buffer the size of a maximum jumbo frame. On systems with insufficient memory, it may be necessary to reduce this parameter. This parameter should not be set to less than 50 if adaptive_coalesce (see below) is enabled. When the maximum frame size is less than 1528 (MTU size less than 1514), this parameter is not used and is always 0.

adaptive_coalesce

Enables or disables adaptive adjustments to the various interrupt coalescing parameters. Enabling it allows the driver to dynamically adjust the interrupt coalescing parameters to achieve high throughput during heavy traffic and low latency during light traffic. Do not set rx_std_desc_cnt (and rx_jumbo_desc_cnt if using jumbo frames) to less than 50. Also, do not set tx_pkt_desc_cnt to less than 80 when this parameter is enabled. Choose from the following selections:

–0 - disabled

–1 - enabled (default)

rx_coalesce_ticks

Configures the number of 1 usec ticks before the NIC generates receive interrupt after receiving a frame. This parameter works in conjunction with the rx_max_coalesce_frames parameter. Interrupt is generated when either of these thresholds is exceeded. A value of 0 means this parameter is ignored and an interrupt is generated when the rx_max_coalesce_frames threshold is reached. The valid range is from 0 to 500 and default is 80. This parameter is not used and is adjusted automatically if adaptive_coalesce is set to 1.

rx_max_coalesce_frames

Configures the number of received frames before the NIC generates receive interrupt. The valid range is from 0 to 100 and the default is 15. This parameter and rx_coalesce_ticks cannot both have a value of 0. If both parameters are set to 0, no receive interrupts are generated. It should also be set significantly lower than rx_std_desc_cnt (and rx_jumbo_desc_cnt if using jumbo frames). This parameter is not used and is adjusted automatically if adaptive_coalesce is set to 1.

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Allied Telesis AT-2972LX10/LC manual  rxjumbodesccnt,  adaptivecoalesce,  rxcoalesceticks,  rxmaxcoalesceframes
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AT-2916LX10/LC, AT-2972LX10/LC specifications

Allied Telesis has long been recognized for its commitment to delivering high-performance networking solutions, and the AT-2972LX10/LC and AT-2916LX10/LC models exemplify this tradition of excellence. These products are designed to meet the demanding requirements of modern businesses looking to enhance their network infrastructure with reliable and efficient connectivity options.

The AT-2972LX10/LC is a media converter that features two SFP (Small Form-factor Pluggable) slots, enabling users to connect to a variety of fiber optic networks. It supports a range of optical transceivers, providing flexibility in network design to suit different distance and bandwidth requirements. This media converter is particularly effective in extending the reach of Ethernet networks, capable of transmitting data up to 80 kilometers through single-mode fiber. This makes it an ideal choice for organizations with geographically dispersed locations needing robust connectivity.

On the other hand, the AT-2916LX10/LC is a layer 2 switch tailored for small to medium-sized businesses. It is equipped with 16 10/100/1000Mbps Gigabit Ethernet ports, ensuring that high-speed data transfer and efficient bandwidth utilization can be achieved. Additionally, it features advanced quality of service (QoS) capabilities that prioritize critical data traffic, ensuring that high-priority applications function smoothly without disruption.

Both models utilize advanced technologies that enhance performance and reliability. With support for MAC address learning, auto-negotiation, and full-duplex transmission, these devices adapt seamlessly to various network conditions. They are compliant with IEEE standards, ensuring interoperability with a wide range of networking equipment. Moreover, they offer extensive management features, including SNMP support for proactive monitoring and diagnostics, enabling network administrators to maintain optimal performance and swiftly address any potential issues.

The build quality of these devices also reflects Allied Telesis' dedication to reliability. The AT-2972LX10/LC and AT-2916LX10/LC are designed to operate in diverse environmental conditions, making them suited for deployment in both office and industrial settings. Furthermore, they incorporate energy-efficient designs that reduce power consumption without compromising performance, aligning with the increasing demand for sustainable technology solutions.

In summary, the Allied Telesis AT-2972LX10/LC and AT-2916LX10/LC are highly effective networking solutions that cater to businesses looking to optimize their connectivity. With their comprehensive features, support for advanced technologies, and commitment to reliable performance, these devices are well-equipped to meet the challenges of today’s networking landscape. They represent a strategic investment for any organization aiming for enhanced communications and operational efficiency.
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