Shiro ADSL 2/2+ Ethernet Modem - Manual (Page 57)

User Manual
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Layer 2
The Egress Layer 2 page allows you to map the CoS of an outgoing packet to user priority bits, which is
honored by the VLAN network. Again, this feature is only configurable on the WAN interfaces as VLAN
is only supported on the WAN side in the current release.
Layer 2
Field Description
Interface Select the WAN interface to configure the QoS for outgoing packets; LAN interface cannot be
selected as VLAN is currently supported on the WAN side only.
Unclassified
Packet Some locally generated packets might not have been classified and thus do not have a CoS value,
such as PPP control packet and ARP packet. You can define the CoS for all unclassified outgoing
packets on layer 2 using this field, which will then pick up the user priority bits based on the
mapping rules you create. The selections are (in the order of descending priority): CoS1, CoS2,
CoS3, CoS4, CoS5, and CoS6. The default value is CoS1 (recommended).
Class of Service The selections are (in the order of descending priority): CoS1, CoS2, CoS3, CoS4, CoS5, and
CoS6.
User Priority The selections are 0, 1, 2, 3, 4, 5, 6, and 7.