D-Link DES-2205 Product Manual - Page 10

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-2205 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-2205 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. D-Link DGS-2205 User Manual 10