Avaya 882 사용자 설명서

Document No. 10-300077, Issue 2

25-9

80-Series QoS

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 “

” 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 “

” later in this chapter.

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