RuggedCom RX1100, RX1000 manual TOS Prioritization, Included With Traffic Prioritization

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.

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