User`s manual

User’s Manual 259
Command Mode
Interface Configuration (Ethernet)
Usage Guidelines
You must configure an ACL mask before you can change frame priorities based on an ACL 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. To specify this priority, use the set priority keywords.
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.
To specify the IP precedence priority, use the set tos keywords. To specify the DSCP priority, use the set
dscp keywords. 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.
Example
Console(config)#interface ethernet 1/12
Console(config-if)#match access-list ip bill set dscp 0
Console(config-if)#
Related Commands
show marking
16.110 match access-list mac
This command changes the IEEE 802.1p priority of a Layer 2 frame matching the defined ACL rule. (This
feature is commonly referred to as ACL packet marking.) Use the no form to remove the ACL marker.
Syntax Description
match access-list mac acl_name set priority priority
no match access-list mac acl_name
acl_name Name of the ACL. (Maximum length: 16 characters)
priority Class of Service value in the IEEE 802.1p priority tag. (Range: 0-7; 7 is the
highest)
Default
None
Command Mode
Interface Configuration (Ethernet)