Changing Priorities Based On Acl Rules - SMC Networks SMC TigerStack III SMC6824M Management Manual

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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.
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.
Command Attributes
• Port – Port identifier.
• Name – Name of ACL.
• Type – Type of ACL (IP or MAC).
• Precedence – IP Precedence value. (Range: 0-7)
• DSCP – Differentiated Services Code Point value. (Range: 0-63)
• 802.1p Priority – Class of Service value in the IEEE 802.1p priority tag.
(Range: 0-7; 7 is the highest priority)
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