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Map to Q:
Select priority queue mapping for LAN port 1~4 and WAN from the pull-down
menu. It includes Q0, Q1, Q2 and Q3, and OFF.
Reserve BW:
Specify reserved Bandwidth of Queue-0 ~ Queue-3. The bandwidth has to be
the multiple of 256.
2.5.2.1.2 By TOS
The Type of Service (TOS) field is an 8-bit field. It is located in the IP packet and used by a
device to indicate the precedence or priority of a given frame. The second field is up to first
field use which TOS with what kind of queue.
By TOS:
Select priority queue mapping for the TOS field of every IP Packet from the pull-
down menu. The TOS includes TOS (0) to TOS (63), and the priority queue includes Q0, Q1,
Q2 and Q3.
Reserve BW:
Specify reserved Bandwidth of Queue-0 ~ Queue-3. The bandwidth has to be
the multiple of 256.
2.5.2.1.3 By 802.1p
IEEE 802.1p is a standard that provides traffic class expediting and dynamic multicast
filtering. Essentially, it provides a mechanism for implementing Quality of Service (QoS) at
the MAC (Media Access Control) level.
Eight different classes (TAG-0 ~ TAG-7) of service are available, expressed through the 3-bit
user_priority field in an IEEE 802.1Q header added to the frame. The way traffic is treated
when assigned to any particular class is undefined and left to the implementation.
