18.
Quality of Service
MN700004 Rev 01
227
QoS Scheduling Commands
A QoS scheduling command overrides any previous QoS scheduling command applied to the
configured interface, globally or specifically. This means that:
If you configure QoS in Global Configuration mode, and subsequently configure a specific
port in Interface Configuration mode, the last configuration is applied to the specific interface.
If you apply QoS commands in a specific port’s Interface Configuration mode, and
subsequently reconfigure QoS in global Configuration mode, the last command takes effect
for all interfaces, including the specific interface.
Table 18-7 lists the commands to configure and display the QoS scheduling algorithms.
Table 18-7 Available QoS Scheduling Commands
C o m m a n d D e s c r i p t i o n
qos scheduling sp
Configures Strict Priority (SP) scheduling.
qos scheduling wrr
Configures Weighted Round-Robin (WRR) scheduling.
qos scheduling hybrid-1
Configures first hybrid-type scheduling.
qos scheduling hybrid-2
Configures second hybrid-type scheduling.
qos scheduling hybrid-3
Configures from 3rd hybrid-type scheduling.
qos scheduling hybrid-4
Configures from 4th hybrid-type scheduling.
qos scheduling hybrid-5
Configures from 5th hybrid-type scheduling.
qos scheduling hybrid-6
Configures from 6th hybrid-type scheduling.
show qos scheduling
Displays the current QoS scheduling settings.
Configuring Strict Priority QoS Queue Handling
The
qos scheduling sp
command, in Global Configuration or Interface Configuration mode,
configures SP (Strict Priority) scheduling.
By default, the SP scheduling is applied.
Command Syntax
device-name
(config)#
qos scheduling sp
Configuring Weighted Round-Robin QoS Queue Handling
The
qos scheduling wrr
command, in Global Configuration or Interface Configuration mode,
applies and configures Weighted Round-Robin (WRR) scheduling. In WRR scheduling,
bandwidth is allocated proportionally for each queue. Network resources are shared among all
of the applications you service, each having the specific bandwidth requirements you have
identified.
By default, the SP scheduling is applied.