Cisco 350 Series Administration Manual page 652

23
432
The 2 Rate 3 Color (2R3C) feature is supported on the device. In this feature, every
policer has two thresholds. If the first threshold is reached, a user-configured Exceed
action is performed. If the second threshold is reached, a user-configured Violate
action is performed (see
• Per flow QoS are applied to flows by binding the policies to the desired ports. A policy
and its class maps can be bound to one or more ports, but each port is bound with at
most one policy.
Notes:
• Single policer and aggregation policer are available when the device is in Layer 2
mode.
• An ACL can be configured to one or more class maps regardless of policies.
• A class map can belong to only one policy.
• When a class map using single policer is bound to multiple ports, each port has its own
instance of single policer; each applying the QoS on the class map (flow) at a port
independent of each other.
• An aggregate policer applies the QoS to all its flow(s) in aggregation regardless of
policies and ports.
Advanced QoS settings consist of three parts:
• Definitions of the rules to match. All frames matching a single group of rules are
considered to be a flow.
• Definition of the actions to be applied to frames in each flow that match the rules.
• Binding the combinations of rules and action to one or more interfaces.
Workflow to Configure Advanced QoS Mode
To configure Advanced QoS mode, perform the following:
1. Select Advanced mode for the system by using the QoS Properties page. Select the Trust
Mode using the Global Settings page. If a packet CoS level and DSCP tag are mapped to
separate queues, the Trust mode determines the queue to which the packet is assigned:
• If internal DSCP values are different from those used on incoming packets, map the
external values to internal values by using the Out-of-Profile DSCP Remarking page.
This in turn opens the DSCP Remarking page.
2. Create ACLs, as described in Create ACL Workflow.
Aggregate Policer).
Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
Quality of Service
QoS Advanced Mode