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LANCOM ES-2126+ und LANCOM ES-2126P
Chapter 4: Operation of Web- based Management
114
Parameter Description:
TOS Delay Priority Mapping: Each Priority can select any of Queue 0 ~
Queue 3. In Default, Priority 0 is mapping to Queue 0, Priority 1 is
mapping to Queue 0, Priority 2 is mapping to Queue 1, Priority 3 is
mapping to Queue 1, Priority 4 is mapping to Queue 2, Priority 5 is
mapping to Queue 2, Priority 6 is mapping to Queue 3, and Priority 0
is mapping to Queue 3.
Function name: T-Type TOS
Function Description: IP TOS Priority affect TOS fields of IP header, you can
find it has 8-bit SERVICE TYPE field that specifies how the datagram
should be handled. The field could be divided into six subfields as follows,
PRECEDENCE (3 bits), D-Type (Delay Priority, 1 bit ), T-Type (Throughput
Priority, 1bit), R-Type (Reliability Priority, 1bit ), M-Type (Monetary Cost
Priority, 1bit ), and UNUSED. PRECEDENCE 3-bits can arrange 8 kinds of
priorities corresponding to the 0~7 priority in the following priority dia-
gram. TOS Throughput Priority Mapping works while T-TYPE in TOS field
of IP header of the packets received by the switch is configured.
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