Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers To Configure QoS for Outbound Traffic
QoS IP-Device Priority
QoS Classifier Precedence: 2
The IP device option, which applies only to IPv4 packets, uses two rules per
IP address on all ports in the switch. Where a particular device-IP address
classifier has the highest precedence in the switch for traffic addressed to or
from that device, then traffic received on the switch with that address is
marked with the IP address classifier's configured priority level. Different IP
device classifiers can have differing priority levels.
N o t e
The switch does not allow a QoS IP-device priority for the Management VLAN
IP address, if configured. If there is no Management VLAN configured, then
the switch does not allow configuring a QoS IP-device priority for the Default
VLAN IP address.
IP address QoS does not support layer-2 SAP encapsulation. For more
information on packet-type restrictions, refer to ''Details of Packet Criteria
and Restrictions for QoS Support'', on page 6-66.
Options for Assigning Priority. Priority control options for packets
carrying a specified IP address include:
(For operation when other QoS classifiers apply to the same traffic, refer to
"Classifiers for Prioritizing Outbound Packets" on page 6-9.)
For a given IP address, you can use only one of the above options at a time.
However, for different IP addresses, you can use different options.
DSCP policy (Assigning a new DSCP and an 802.1p priority; inbound
packets must be IPv4.)