D-Link DGS-2208 - Desktop Switch, Руководство пользователя

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10 D-Link DGS-2208 User Manual
Section 2 - Product Overview
802.1p Priority Tagging
802.1p places a tag in a frame to indicate the priority of the frame. A tag will represent a priority of 0-7 and an 802.1p
compliant switch can read this tag and prioritize traffic accordingly. In 802.1p a port can receive frames with varying
priority tags and classify them based on these tags. A VoIP phone that supports 802.1p can assign a priority to its
VoIP traffic and when it enters the switch the switch can give it a higher priority so that voice traffic is always clear and
jitter free. The DGS-2208 supports the 802.1p feature with 4 preconfigured priority queues. When a frame tagged with
an 802.1p priority bit is received by the switch it places the frame into one of 4 queues prioritized according to its tag
number. For example, traffic tagged with a priority bit of 7 will have a higher priority then traffic tagged with a priority
bit of 6 and so forth.
Jumbo Frame Support
The DGS-2208 switch supports Jumbo Frames up to (9K) in size. Jumbo Frame support is designed to improve network
throughput and significantly reduce the CPU utilization of large file transfers such as multimedia files or large data files
by enabling more efficient larger payloads per packet.