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Chapter 4: Web Configuration 
                                                                                                                                                                                       
101
Quality of Service – Bridge QoS 
To classify the upstream traffic by 
assigning the transmission priority for 
different users’ data, please use 
Bridge QoS to prioritize the data 
transmission.  
The Bridge QoS allows you to set the 
settings based on layer two bridge 
packets. 
Traffic Class Name:   
Key in a name as the traffic class for 
identification. 
802.1p Priority:   
Each incoming packet will be mapped 
to a specific priority level, so that 
these levels may be acted on 
individually to deliver traffic 
differentiation. Please choose the 
number (from 0 to 7, low to high 
priority) for the 802.1p Priority. 
Traffic Priority:   
There are three options – Low, 
Medium, 
and High that you can 
choose. The IAD will arrange the 
precedence for the traffic according to 
the traffic priority setting here. 
As for the settings for the DSCP value 
and the WAN 802.1p value of the 
upstream packets, they will be seen 
on the WAN side.   
 
DiffServ Class (DSCP): 
 
DiffServ is a computer networking 
architecture that specifies a simple, 
scalable and coarse-grained 
mechanism for classifying, managing 
network traffic and providing QoS 
(quality of service) guarantees on 
modern IP networks. DiffServ can, for 
example, be used to provide 
low-latency, guaranteed service to 
critical network traffic such as voice or 
video while providing simple best-effort 
traffic guarantees to non-critical 
services such as web traffic or file 
transfers. 
The higher position the item appears, 
the smaller DSCP value it is (i.e., BE 
is the lowest while CS7 is the highest).
The corresponding DSCP value in the 
IP header of the upstream packets will 
be overwritten by the selected value. 
The default setting is No change