Configuring the ECN330-switch
3351553-KDU 137 365 Uen D 2006-06-16
Web – Click Priority, IP Precedence/DSCP Priority Status. Select Disabled,
IP Precedence or IP DSCP from the scroll-down menu, then click Apply.
Figure 136 IP Precedence/DSCP Priority Status
CLI – The following example enables IP Precedence service on the ECN330-
switch.
6.14.2.3 Mapping IP Precedence
The Type of Service (ToS) octet in the IPv4 header includes three precedence
bits defining eight different priority levels ranging from highest priority for
network control packets to lowest priority for routine traffic. The default IP
Precedence values are mapped one-to-one to Class of Service values (that is,
Precedence value 0 maps to CoS value 0, and so forth). Bits 6 and 7 are used
for network control, and the other bits for various application types. ToS bits are
defined in Table 20.
Table 20 Mapping IP Precedence
Console(config)#map ip precedence
Console(config)#
Priority
Level
Traffic Type Priority
Level
Traffic Type
7 Network Control 3 Flash
6 Internetwork Control 2 Immediate
5 Critical 1 Priority
4 Flash Override 0 Routine
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