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SCALANCE WLC711
User Guide, V8.11, 07/2012, C79000-G8976-C260-03 8-1
8
Configuring Classes of Service
his chapter describes classes of service configuration, including:
Classes of Service Overview
In general, Class of Service (CoS) refers to a set of attributes that define the importance of a frame
while it is forwarded through the network relative to other packets, and to the maximum
throughput per time unit that a station or port assigned to a specific policy is permitted. For more
information on configuring policies, see “Configuring VLAN and Class of Service for a Policy” on
page 5-1.
The CoS defines actions to be taken when rate limits are exceeded.
All incoming packets may follow these steps to determine a CoS:
Classification - identifies the first matching rule that defines a CoS.
Marking - modifies the L2 802.1p and/or L3 ToS based on CoS definition.
Rate limiting (drop) is set.
The system limit for the number of CoS profiles on a controller is identical to the number of
policies.
Configuring Classes of Service
The Classes of Service (CoS) feature is a configuration entity containing QoS Marking (802.1p and
ToS/DSCP), Inbound/Outbound Rate Limiting and Transmit Queue Assignments. The CoS ToS
marking capability allows for NAC-based redirection to different captive portals on the same
WLAN Service.
The supported CoS attributes are enforced on the Wireless Controller (data plane) and on the APs.
To configure Classes of Service:
1. From the top menu, click VNS Configuration.
The Virtual Network Configuration screen displays.
For information about... Refer to page...
Classes of Service Overview 8-1
Configuring Classes of Service 8-1
CoS Rule Classification 8-4
Priority and ToS/DSCP Marking 8-5
Rate Limiting 8-6
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