C
ONFIGURING
THE
S
WITCH
2-94
Selecting IP Precedence/DSCP Priority
The switch allows you to choose between using IP Precedence or
DSCP priority. Select one of the methods or disable this feature.
Command Attributes
• IP Precedence/DSCP Priority Status – Selects IP Precedence,
DSCP, or disables both priority services.
Web – Click Priority, IP Precedence Priority. Select IP Precedence
or IP DSCP from the IP Precedence, DSCP Priority Status menu.
CLI – The following example globally enables IP Precedence
service on the switch.
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 (i.e., Precedence value 0
maps to CoS value 0, and so forth). Bits 6 and 7 are used for
Console(config)#map ip precedence 3-166
Console#
b_mgmt.book Page 94 Tuesday, July 8, 2003 5:24 PM
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