User guide
ADSL2+ Ethernet USB Combo Router - User Guide  
Page 46 of 67 
4.5.19.3 
Ingress Layer 3 Configuration 
The Layer 3 page allows you to map ToS bits of incoming packets from the IP network to CoS 
for each WAN/LAN interface. 
Figure 1-33 : Ingress Layer 3 Configuration 
Field  Definition/ Description 
Interface  For both WAN and LAN interfaces, you can configure QoS for layer 
3 (IP) data traffic. 
Class of Service  This  CoS field  allows you  to  map incoming  layer 3  WAN/LAN 
packets  to  one  of  the  following  CoS  (in  the  order  of  descending 
priority): CoS1, CoS2, CoS3, CoS4, CoS5, and CoS6. 
ToS  The Type of Service field takes values from 0 to 255. 
Default Non-IP 
A static CoS can be assigned  to all  layer 3  incoming packets (per 
interface) that do not have an IP header, such as PPP control packets 
and ARP packets. The default is CoS1 (recommended). 










