MAX Command Reference Guide Network Utility Commands
112
25.8. QoS
Shows and sets the current Diffserv configuration. Detailed usage of the command can be seen by
executing “QoS” at
SYS_NAME
:/NETUTIL> prompt.
The “-s” option is used for setting the priority level of out going IP packets. This priority level is also
called “code point”. The higher code point means the higher priority for packet processing at every
routers. However, if the router resource is unavailable, then higher priority packets are discarded first, so
median value of code point is recommended when router capacity is low.
The “-g” option is used for showing current code point setting.
The example below shows the command usage and the code point values that can be used.
There are 12 code point values for AF(assured forwarding) code point range, and they are classified as
“low”, “med”, “high” code points. Each of these classes are graded in following manner : Average,
Bronze, Silver, Gold.
{* The higher code point means higher priority for IP packet processing.}
[Example]
SYS_NAME
:/NETUTIL> qos
Usage : qos -s <value>
-g
Choose one of following codepoint and enter the value in hexadecimal
number. Using one of the value in the AF codepoint table is
recommended.
=========================================================
Recommended Codepoint for Standard Per-Hop Behavior
=========================================================
1. DE(Default
Expected)
: 00000000(0x00)
2. EF(Expected Forwarding) : 10111000(0xb8)
3. AF(Assured
Forwarding) : 00101000(0x28)-10011000(0x98)
