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Allied Telesis AT-AR256E v3 Manual

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AT-AR256E v3 4 Ports ADSL2/2+ Router User Manual 41
Layer 3 Ingress
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 32: Layer 3 Ingress
Field 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 a IP header, such as PPP control packets and ARP packets. The default is CoS1
(recommended).
To configure Ingress Layer 3:
11. Select Advanced menu.
12. Select QoS > Ingress.
13. Select the quickstart interface.
14. Select Layer 3.
15. Select CoS1 in Class of Service and enter 22 in Type of Service (ToS). Any incoming packet from
LAN Group 1 (layer 3) with a ToS of 22 is mapped to CoS1, the highest priority, which is normally
given to voice packets.
16. Leave the default value CoS1 in Default Non-IP. Any incoming packet from LAN Group 1 without a IP
is mapped to CoS1, the highest priority.
17. Click Apply to temporarily activate the settings.
18. Repeat step 5-7 to add more rules to LAN Group 1. Up to 255 rules can be configured for each
interface.
19. To make changes permanent, click Save Settings.
Any priority bits that have not been mapped to a CoS default to CoS6, the lowest priority.
Any WAN interface that is not configured has the default Untrusted mode.
… 41 …


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