How Does Qos Work; Qos Process For Ingress Traffic - Avaya Cajun P882 User Manual

How Does QoS Work?

QoS Process for Ingress Traffic

Process
Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1
Table 21-1. Examples of Classes of Service
Service Priority
Class
High Priority 1
Data
Best Effort 0
The QoS process starts at the point where a frame enters the switch
and ends when the frame exits the switch. This section describes the
QoS process from start to finish.
The QoS process for ingress traffic involves the following steps:
1. Identifying the priority, also called class, of the frame or
packet. The switch can identify the priority of the frame or
packet by using one or more of the following criteria:
The priority of the physical port that the switch received
—
the frame or packet on
Cisco ISL tag priority
—
802.1p tag priority (default)
—
The source or destination MAC address
—
The DiffServ code point
—
The IP protocol (assigned by means of an ACL rule)
—
The source or destination IP address (assigned by means
—
of an ACL rule)
The source or destination TCP or UDP port (assigned by
—
means of an ACL rule)
For more information on identifying the priority of traffic,
see "Classification of Traffic"
DSCP Type of Traffic
Value
8 SAP, Web, etc. Dependent
upon your business.
0 Everything else.
on page 7.
80-Series QoS
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