Classifying Traffic By Layer 2 Characteristics; Classifying Traffic By Layer 3 Or Layer 4 Characteristics - Avaya Cajun P882 User Manual

Chapter 21

Classifying Traffic by Layer 2 Characteristics

Classifying Traffic by Layer 3 or Layer 4 Characteristics

ACL Rules
21-8
However, the priority of the 802.1 tag and Cisco ISL tag take
precedence over the priority of the physical port, so the switch uses
the priority of the physical port only if:
No tags are present in the frame
or
You have set the physical port to ignore priorities in tags.
For information on how to set a port to ignore priorities in
tags, see "Setting a Physical Port to Ignore Tag Priority"
page 14.
In addition to Cisco ISL tag, 802.1p tag, and physical port priority,
the switch can classify traffic by:
Source MAC address
Destination MAC address
For information about how to set a priority for a source or
destination MAC address, see
Address" on page 16.
In addition to these layer 2 characteristics, you can classify bridged
IP traffic by DiffServ code point. For more information on classifying
bridged IP traffic by DiffServ code point, see
You can, alternately, configure the switch to classify traffic by the IP
characteristics of packets, instead of 802.1p tag priority, physical
port priority, or other layer 2 characteristics.
To assign priorities to packets by their IP characteristics, you create a
rule in an access control list (ACL). The rule can:
Set an ACL rule priority
Use the DiffServ code point
Mask the three least significant bits of the DSCP. The switch
recognizes the remaining bits as the IP precedence field.
Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1
"Setting the Priority of a MAC
"Diffserv"
on
on page 10.