Specifications

Traffic Groupings
ExtremeWare XOS 11.0 Concepts Guide 111
The default QoS profiles cannot be deleted. Also by default, a QoS profile maps directly to a specific
hardware queue across all physical ports. The settings for the default QoS parameters are summarized
in Table 17.
Traffic Groupings
After a QoS profile has been modified for bandwidth and priority, you assign a traffic grouping to the
profile. A traffic grouping is a classification of traffic that has one or more attributes in common. Traffic is
typically grouped based on the needs of the applications discussed starting on page 108.
Traffic groupings are separated into the following categories for discussion:
• ACL-based information
• Explicit packet class of service information, such as 802.1p or DiffServ (IP TOS)
• Physical/Logical configuration (physical source port or VLAN association)
In the event that a given packet matches two or more grouping criteria, there is a predetermined
precedence for which traffic grouping applies. In general, the more specific traffic grouping takes
precedence. By default, all traffic groupings are placed in the QoS profile QP1. The supported traffic
groupings are listed in Table 18. The groupings are listed in order of precedence (highest to lowest). The
three types of traffic groupings are described in detail on the following pages.
Table 17: Default QoS profile parameters
Profile Name Hardware Queue Priority
Minimum
Bandwidth
Maximum
Bandwidth
QP1 Q0 Low 0% 100%
QP2 Q1 LowHi 0% 100%
QP3 Q2 Normal 0% 100%
QP4 Q3 NormalHi 0% 100%
QP5 Q4 Medium 0% 100%
QP6 Q5 MediumHi 0% 100%
QP7 Q6 High 0% 100%
QP8 Q7 HighHi 0% 100%
Table 18: Traffic groupings by precedence
Access List Groupings (ACLs)
• IP ACL
• MAC ACL
Explicit Packet Class of Service Groupings
• DiffServ (IP TOS)
• 802.1P
Physical/Logical Groupings
• Source port
• VLAN