ZyXEL Communications GS-1524 User Manual

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Chapter 11 QoS
GS-1524/GS-1548 User’s Guide
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11.2  QoS Enhancement
You can configure the Switch to prioritize traffic even if the incoming packets are not marked 
with IEEE 802.1p priority tags or change the existing priority tags based on the criteria you 
select. The Switch allows you to choose one of the following methods for assigning priority to 
incoming packets on the Switch:
Port Based QoS - Assign priority to packets based on the incoming port on the Switch. See 
DSCP Based QoS - Assign priority to packets based on their Differentiated Services Code 
Points (DSCPs). See 
.
ToS Based QoS - Assign priority to packets based on their Type of Service (ToS) tagging. See 
IP Address Based QoS - Assign priority to packets based on their IP address. See 
.
"
Advanced QoS methods only affect the internal priority queue mapping for the 
Switch. The Switch does not modify the IEEE 802.1p value for the egress 
frames. 
You can choose one of these ways to alter the way incoming packets are prioritized or you can 
choose not to use any QoS enhancement setting on the Switch.
11.3  Configuring QoS 
Use the QoS Setting screen to specify a queuing method and configure queue weights for the 
Switch. Click QoS in the navigation panel to view the following screen.