No Quality of Service mechanisms are defined in this standard, but an important requirement for
providing QoS is included in this standard, e.g. abitity to regenerate user priority of received
frames using priority information contained in the frame and the User Priority Regeneration
Table for the reception Port.
802.1p
IEEE 802.1p standard, Traffic class expediting and dynamic multicast filtering. It describes
important methods for providing QoS at MAC level. IEEE 802.1p is in fact quite good. Lower
priority level packets are not sent, if there is packets in queued in higher level queues. IEEE
802.1p describes no admission control protocols. It would be possible to give Network Control
priority to all packets and the network would be easily congested.
There are three VLAN: data VLAN, voice LAN and management VLAN. VLAN configuration
interface as below:
Figure 4.5-3 VLAN parameter configuration
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