Precedence Of Priorities - Avaya Cajun P882 User Manual

Precedence of Priorities

Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1
If multiple priorities are associated with a frame or packet, the
switch classifies the frame or packet according to the priority of
highest precedence. See Table 21-2 for the precedence of each
priority.
The switch then assigns the frame or packet to the appropriate
priority queue based on the priority of the frames.
Table 21-2. Precedence of Priorities
Layer Precedence
of Priority
Layer 3
High
Layer 2
Low
Priority Used for Classification
ACL rule priority
DSCP in the packet or DSCP that the
switch replaces the original DSCP with
DSCP (for bridged IP traffic)
Destination MAC address priority
Source MAC address priority
802.1p tag
Cisco ISL tag
Physical port priority
80-Series QoS
21-11