Tos prioritization, Included with traffic prioritization – RuggedCom RuggedRouter RX1000 User Manual
Page 171
Chapter 16 – Configuring Traffic Prioritization
TOS Prioritization
The priority of an IP packet can be derived from its Type of Service field. The TOS
field has the following format:
7 6 5 4 3 2 1 0
+---+---+---+---+---+---+---+---+
| | TOS Bits | |
|PRECEDENCE |MD MT MR MMC| 0 |
| | | |
+---+---+---+---+---+---+---+---+
The four TOS bits (the 'TOS field') are defined as:
•
MD - Minimize Delay,
•
MT - Minimize Throughput,
•
MR - Maximize Reliability,
•
MMC - Minimize Monetary Cost
As any (or all) of these bits may be set in a packet at a time, there are 16 possible
combinations. The router maps these combinations into the high, normal and low
priority queues as shown in the following table:
MD
MT
MR
MMC
Descriptions
Priority Queue
0
0
0
0
Normal Service
Normal
0
0
0
1
Minimize Monetary Cost
Low
0
0
1
0
Maximize Reliability
Normal
0
0
1
1
MR+MMC
Normal
0
1
0
0
Maximize Throughput
Low
0
1
0
1
MT+MMC
Low
0
1
1
0
MT+MR
Low
0
1
1
1
MT+MR+MMC
Low
1
0
0
0
Minimize Delay
High
1
0
0
1
MD+MMC
High
1
0
1
0
MD+MR
High
1
0
1
1
MD+MR+MMC
High
1
1
0
0
MD+MT
Normal
1
1
0
1
MD+MT+MMC
Normal
1
1
1
0
MD+MT+MR
Normal
1
1
1
1
MD+MT+MR+MMC
Normal
Included With Traffic Prioritization
Your RuggedRouter software includes the priostats command line utility, which can be used to show
cummulative and one second interval statistics in a format similar to those of the GUI.
RuggedCom 169