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Queues implementation in Infinet devices

For a device, the process of analyzing the priority in the service headers and processing data in accordance with the data processing according to these priorities is not a simple task due to the following reasons:

• Devices recognize priority automatically The devices automatically recognize priorities according to different protocols. For example, the InfiLINK XG family of devices support supports 802.1p priority and do prioritization, but does not recognize DSCP priority values.
• Devices that are borderline for The devices at the borderline of the DS domain allow to use a different set of criteria to classify the traffic. For example, the InfiMAN 2x2 devices allow to set priority priorities by selecting all the TCP traffic directed to port 23, the Quanta 5 family devices do does not support this type of prioritization.
• The number of the queues number implemented in inside the devices is different differs and depends on the manufacturer. A correspondence table is used to set a relation between the priority in the service header and the device's internal queue.

The tables below show the data on types for the queues of the internal architecture, the priorities managing priority handling possibilities and the relation between the protocol standardized priorities and the internal priorities valuesused by the device.

Note Please note the architectural queuing architectural feature of the Infinet devices: all queues share a single memory buffer. In case that all the traffic falls into one a single queue, its size will be equal to the size of the buffer, but if there will be several queues in use, the size of the memory buffer will be evenly divided between them.

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