User manual
1. This function has great impact on forwarding multicast, unless you can make sure the address is no problem, otherwise,
please use it with caution.
2. The following multicast addresses are reserved for the device or protocol, please don't use them: 0180C20000xx,
01005E0000xx.
3. IGMP dynamic learning will not update the multicast address, static multicast forwarding is a kind of safety mechanism.
6.5 QOS
6.5.1 QOS Classification
QoS provides four internal queues, each queue supports four different levels of traffic,
s
horter persistence
time of high-priority data packets in the switch, supports lower latency for certain delay-sensitive traffic.
According to port ID, MAC address, 802.1p priority tags, DiONetServ and IP TOS, equipment can be abale to put
the packets to an appropriate level.
users can select the QOS priority queue mechanism, the queue mechanism in two ways: weighted Fair
mode and strict mode.
6.5.2 COS
IEEE P802.1p is the name of a task group active during 1995–98 responsible for adding
traffic class expediting and dynamic multicast filtering to the IEEE 802.1D standard. Essentially,
they provided a mechanism for implementing Quality of Service (QoS) at the media access control
(MAC) level. The group's work with the new priority classes and Generic Attribute Registration
Protocol (GARP) was not published separately but was incorporated into a major revision of the
standard, IEEE 802.1D-1998. It also required a short amendment extending the frame size of the