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Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 37 Configuring Quality of Service
Configuring QoS on Supervisor Engine 6-E, Supervisor Engine 6L-E, Catalyst 4900M, and Catalyst 4948E
Platform-Supported Classification Criteria and QoS Features
The following table provides a summary of various classification criteria and actions supported on
Catalyst 4900M, Catalyst 4948E, Supervisor Engine 6-E, and Supervisor Engine 6L-E. For details, refer
to the Catalyst 4500 Series Switch Command Reference.
Supported Classification Actions Description
match access-group Configures the match criteria for a class map on the basis of the specified ACL.
match any Configures the match criteria for a class map to be successful match criteria for all
packets.
match cos Matches a packet based on a Layer 2 class of service (CoS) marking.
match destination-address mac Uses the destination MAC address as a match criterion.
match source-address mac Uses the source MAC address as a match criterion.
match [ip] dscp Identifies a specific IP differentiated service code point (DSCP) value as a match
criterion. Up to eight DSCP values can be included in one match statement.
match [ip] precedence Identifies IP precedence values as match criteria.
match protocol Configures the match criteria for a class map on the basis of the specified protocol.
match qos-group Identifies a specific QoS group value as a match criterion. Applies only on the egress
direction.
Supported Qos Features Description
police Configures traffic policing.
police (percent) Configures traffic policing on the basis of a percentage of bandwidth available on an
interface.
police (two rates) Configures traffic policing using two rates, the committed information rate (CIR) and
the peak information rate (PIR).
set cos Sets the Layer 2 class of service (CoS) value of an outgoing packet.
set dscp Marks a packet by setting the differentiated services code point (DSCP) value in the
type of service (ToS) byte of IPv4 or traffic class byte of IPv6 packet.
set precedence Sets the precedence value in the packet header.
set qos-group Sets a QoS group identifier (ID) that can be used later to classify packets.
table map support Unconditional marking of one packet field based on another packet field.
priority Gives priority to a class of traffic belonging to a policy map.
shape Shapes traffic to the indicated bit rate according to the algorithm specified.
bandwidth Provides a guaranteed minimum bandwidth to each of the eight queues.
dbl Dynamic buffer limit.
queue-limit Specifies the maximum number of packets a transmit queue can hold.