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Quality of Service: Managing Bandwidth More Effectively
QoS Operation
Classifier-Based QoS
Classifier-Based QoS Feature Default Page
Reference
Classifier-Based QoS Configuration
Procedure
— page 6-71
Configuring QoS Actions in a Policy — page 6-76
Override of Global QoS Settings — page 6-81
Viewing a Classifier-Based QoS — page 6-81
Configuration
Classifier-Based QoS Restrictions — page 6-85
Classifier-Based QoS Configuration page 6-86
Examples
DSCP Policy Table Various page 6-88
Queue Configuration 4 or 8 Queues* page 6-95
*Series 3500yl switches use four queues by default.
Series 5400zl switches and the Series 8212zl switch use eight queues by
default.
Starting in release K.14.01, classifier-based QoS operation provides additional
QoS actions on a per-port and per-VLAN basis.
■ Classifier-based match criteria on inbound IPv4/IPv6 traffic include:
• IP source address (IPv4 and IPv6)
• IP destination address (IPv4 and IPv6)
• IP protocol (such as ICMP or SNMP)
• Layer 3 IP precedence bits
• Layer 3 DSCP codepoint
• Layer 4 UDP/TCP application port
• VLAN ID
■ Classifier-based QoS policy actions on matching IPv4/IPv6 packets are as
follows:
• Setting Layer 2 802.1p priority value (class of service) in VLAN-tagged
and untagged packet headers
• Setting the Layer 3 IP precedence bits
• Setting the Layer 3 Differentiated-Services Codepoint (DSCP) bits
• Rate-limiting inbound traffic on port and VLAN interfaces
For information on operation with globally-configured QoS settings, see
“Advanced Classifier-Based QoS” on page 6-70.
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