Planet Technology MGSW-004 - Manual (Page 24)

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there is no MAC address count restriction for that port.
Ø Type the number in the “ Max Allowed MAC Address Count “ edit for that port. The
upper bound of this number is the “ Max Allowed MAC Address Count per port “
Ø Press the “ Press “ button
Ø The “ Used Count “ will tell you how many MAC address residing in the
corresponding port now.
Note : A trunked port is not allowed to enable the port security option.
4.10 Priority
– 802.1p
There are two priority queues (high and low) on each port. Each port arbitrates between two
transmit queues (high and low priority).
The arbitration uses weighted round-robin between the high and low priority queues, and you
can adjust this weight.
Programmable Mapping of 802.1p to Internal Priority
The received packets with 802.1q tag are assigned priority according to a flexible and
programmable mapping of the 802.1p user-priority tag (3 bits, value from 0 to 7) to the internal
priority queue. The default is to assign a packet to high priority queue when the 802.1p
user-priority tag is 4 to 7, and to low priority queue when the 802.1p user-priority tag is 0 to 3.
Please check the corresponding mapping checkbox to assign a high priority or uncheck that to
assign a low priority.
4.11 Priority 2
– TOS (Type of Service)
Each port can parse the header of an incoming IPv4 header and identify the Type-Of-Service
byte (TOS field). This is extremely important with the deployment of Microsoft Windows 2000
and the emerging DiffServ standard, which marks Voice-Over-IP and other real-time traffic
using this field. This feature provides Quality of Service (QoS).