User manual

A CCESS C ONTROL L IST C OMMANDS
4-133
match access-list ip
This command changes the IEEE 802.1p priority, IP Precedence, or
DSCP Priority of a 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
match access-list ip acl_name
[set priority priority]{set tos tos_value | set dscp dscp_value}
no match access-list ip 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 priority)
• tos_value – IP Precedence value. (Range: 0-7)
• dscp_value – Differentiated Services Code Point value. (Range: 0-63)
Default Setting
None
Command Mode
Interface Configuration (Ethernet)
Command Usage
• 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.
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.