Chapter 6: Command Line Interface

Quality of Service

There are four transmission queues with different priorities in the Managed Switch: Highest, SecHigh, SecLow and Lowest. The Managed Switch will take packets from the four queues according to its QoS mode setting. If the QoS mode was set to "Disable", the Managed Switch will not perform QoS on its switched network. If the QoS mode was set to "High Empty Then Low", the Managed Switch will never exhaust packets from a queue until the queues with higher priorities are empty. If the QoS mode was set to "weight ratio", the Managed Switch will exhaust packets from the queues according to the ratio. The default value of QoS mode is "weight 8:4:2:1." That means the switch will first exhaust 8 packets from the queue with highest priority, and then exhaust 4 packets from the queue with second high priority, and so on.

When the switch received a packet, the switch has to decide which queue to put the received packet into. In the Managed Switch, it will put received packets into queues according to the settings of "802.1p Priority" and "Static Port Ingress Priority." When the received packet is an 802.1p tagged packet, the switch will put the packet into a queue according to the 802.1p Priority setting.

Otherwise, the switch will put the packet into a queue according the setting of Static Port Ingress Priority.

•802.1p Priority: the 802.1p packet has a priority tag in its packet header. The range of the priority is 7~0. The Managed Switch can specify the mapping between 802.1p priority and the four transmission queues. In the default setting, the packets with 802.1p priority 0~1 are put into the queue with lowest priority, the packets with 802.1p priority 2~3 are put into queue with second low priority, and so on.

•Static Port Ingress Priority: each port is assigned with one priority 7~0. The priority of the packet received from one port is set to the same priority of the receiving port. When the priority of the received packet was determined, the packet is treated as an 802.1p packet with that priority and will be put into a queue according to the 802.1p Priority setting.

QoS Configuration

QoS mode:

•First Come First Service: The sequence of packets sent is depending on arrive orders.

•All High before Low: The high priority packets sent before low priority packets.

•WRR: Weighted Round Robin. Select the preference given to packets in the switch's high-priority queue. These options represent the number of higher

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Graco GE-DS-242-POE manual Quality of Service, QoS Configuration
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GE-DS-242-POE specifications

The Graco GE-DS-242-POE is an advanced electric diaphragm pump designed to cater to a wide range of industrial applications. This model stands out for its reliability, efficiency, and innovative technology, making it an ideal choice for demanding environments such as automotive, food processing, and chemical handling.

One of the main features of the GE-DS-242-POE is its robust construction. Built from durable materials, it is designed to withstand harsh operating conditions, ensuring a long service life. The pump is powered by a reliable electric motor that guarantees consistent performance with minimal downtime. This electric design offers a significant advantage over air-operated pumps, as it eliminates the need for compressed air, reducing operational costs.

The GE-DS-242-POE utilizes a double-diaphragm design that allows for precise fluid transfer and improved efficiency. This technology enables the pump to handle a variety of fluids, including viscous materials, slurries, and abrasive substances, without compromising performance. The dual diaphragm feature also enhances the pump's ability to handle fluctuating pressures, making it suitable for diverse applications.

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Ease of maintenance is a crucial aspect of the GE-DS-242-POE. The design incorporates accessible service points, which simplify routine inspections and repairs. This user-friendly approach reduces maintenance time and costs, ultimately boosting productivity.

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In conclusion, the Graco GE-DS-242-POE is a technologically advanced electric diaphragm pump that excels in performance, durability, and versatility. Its robust construction, efficient double-diaphragm technology, and user-friendly design make it an indispensable tool for businesses in various sectors, enhancing operational efficiency while ensuring safety and reliability in fluid handling processes.
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