Queue Settings - Planet Networking & Communication WGSW-48000 User Manual

4.8.2 Queue Settings

The Queue Setting page contains fields for defining the QoS queue forwarding types. The screen in
The page includes the following fields:
Object
• Scheduling Mode
• Queue
• Weight
4.8.2 DSCP
TOS/DSCP priority is obtained through a 6-bit Type-of-Service (TOS) or Differentiated Service Code Point (DSCP) to 3-bit
priority mapping.
The Type of Service (TOS) octet in the IPv4 header is divided into three parts; Precedence (3 bits), TOS (4 bits), and MBZ (1
bit). The Precedence bits indicate the importance of a packet, whereas the TOS bits indicate how the network should make
tradeoffs between throughput, delay, reliability, and cost (as defined in RFC 1394). The MBZ bit (for "must be zero") is currently
unused and is either set to zero or just ignored.
Figure 4-8-2 Queue Settings screenshot
Description
There are two available schedule mode:
• Strict Priority: the packets in the higher queue will always be served first until the
queue is empty.
• Weighted Round Robin: the packets will be served according to the queue weight.
Indicates priority queues.
Queue 1 is the lowest priority queue, and Queue 4 is the highest priority queue.
Indicates the weight (number of packets) to be served in the queue before moving to
serve next queue. A high priority queue should have a higher weight than a low priority
queue.
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User's Manual of WGSW-48000
Figure 4-8-2 appears.