MS888G2 User Manual
104
Alloy Computer Products Pty Ltd Copyright ©2006
3-16-6. R-Type TOS
Fig. 3-66
Function Name:
TOS Reliability Priority Mapping
Function Description:
The IP TOS Priority affects the TOS fields of the IP header using an 8 bit service type
field to specify how the datagram should be handled. The TOS field can be divided into
six subfields as follows: Precendence (3 Bits), D-Type (Delay Priority, 1 bit), T-Type
(Throughput Priority, 1 bit), R-Type (Reliability Priority, 1 bit), M-Type (Monetary Cost
Priority, 1 bit) and Unused. TOS Reliability Priority Mapping will be utilised if configured in
the following section.
Parameter Description:
TOS Reliability Priority Mapping:
Each Priority level can be assigned to any Queue from 0 through to 3. The
Default values are as follows: Priority 0 is mapped to Queue 0, Priority 1 is
mapped to Queue 0, Priority 2 is mapped to Queue 1, Priority 3 is mapped to
Queue 1, Priority 4 is mapped to Queue 2, Priority 5 is mapped to Queue 2,
Priority 6 is mapped to Queue 3, and Priority 0 is mapped to Queue 3.
