C
ONFIGURING
THE
S
WITCH
3-188
CLI – This example assigns a CoS value of zero to packets matching rules
within the specified ACL on port 1.
Changing Priorities Based on ACL Rules
You can change traffic priorities for frames matching the defined ACL
rule. (This feature is commonly referred to as ACL packet marking.) This
switch can change the IEEE 802.1p priority, IP Precedence, or DSCP
Priority of IP frames; or change the IEEE 802.1p priority of Layer 2
frames. (This feature is commonly referred to as ACL packet marking.)
Use the no form to remove the ACL marker.
Command Usage
You must configure an ACL mask before you can change priorities
based on a rule.
Traffic priorities may be included in the IEEE 802.1p priority tag. This
tag is also incorporated as part of the overall IEEE 802.1Q VLAN tag.
The 802.1p priority may be set for either Layer 2 or IP frames.
The IP frame header also includes priority bits in the Type of Service
(ToS) octet. The Type of Service octet may contain three bits for IP
Precedence or six bits for Differentiated Services Code Point (DSCP)
service. Note that the IP frame header can include either the IP
Precedence or DSCP priority type.
The precedence for priority mapping by this switch is IP Precedence
or DSCP Priority, and then 802.1p priority.
Console(config)#interface ethernet 1/13-1
Console(config-if)#map access-list ip bill cos 03-128
Console(config-if)#