iES20G/iES18G
Series User’s Manual
iS5 Communications Inc.
58
COS Port Default
When an ingress packet has no VLAN tag, a default priority value is
considered and determined by the ingress port.
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5.1.10.4
TOS/DSCP
TOS/DSCP interface
Label
Description
TOS/DSCP
TOS (Type of Service) is a field in IP header of a packet. This TOS field
is also used by Differentiated Services and is called the Differentiated
Services Code Point (DSCP). The output priority of a packet can be
determined by this field and the priority value is supported 0 to 63.
DSCP value map to 4 priority queues: High, Middle, Low, and Lowest.
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