Avaya 580 - Manual (Page 683)

Document No. 10-300077, Issue 2 25-9
80-Series QoS
Classifying Traffic by Layer 2 Characteristics
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 “
Setting the Priority of a MAC Address ” later in this chapter.
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 “
Diffserv ” later in this chapter.
Classifying Traffic by Layer 3 or Layer 4 Characteristics
ACL Rules 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.
■
Replace the existing DSCP with a DSCP that you specify
■
Use the layer 2 priority
You can specify the TCP/IP traffic that you want the rule to apply to. The
rule can apply to traffic with a specific:
■
IP destination address
■
IP source address
■
IP Protocol
■
Destination TCP or UDP port
■
Source TCP or UDP port