
© 2005 Extreme Networks, Inc. All Rights Reserved
Policy-Based QoS
Traffic Grouping Classification + QoS Profile => Policy
• Classifications: L1-L4 information, WINS username (using EEM and DLCS), Observe and/or
overwrite 802.1p and IPDiffServ packet markings.
• QoS Profile: Determines Bandwidth Management (e.g. Min. Bandwidth %; Max Bandwidth
%; priority). Option for Random Early Detection.
• Layer Independent QoS: Use of Layer 3 & 4, IP DiffServ info without routing;
Packets
Packets
IN
IN
Classification QoS Profile (configured queue)
•
•
Ordered Hierarchy
Ordered Hierarchy
•
•
Layer 1,2,3,4, .1p, IP
Layer 1,2,3,4, .1p, IP
DiffServ packet info
DiffServ packet info
0% Min/100% Max
0% Min/100% Max
Qp1
Qp1
-
-
Best Effort Traffic
Best Effort Traffic
Layer 4
Layer 4
Layer 3
Layer 3
Layer 2
Layer 2
Layer 1
Layer 1
Packets
Packets
Out
Out
5% Min/100% Max
5% Min/100% Max
QpX
QpX
-
-
Essential Traffic
Essential Traffic
Layer 4
Layer 4
Layer 3
Layer 3
Layer 2
Layer 2
Layer 1
Layer 1
=Policy
Low Priority
Low Priority
Higher Priority
Higher Priority
Packet
Packet
Packet
Packet
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