Users Guide

You can apply this command on both physical interfaces and port channels. When you set the service-class
dynamic for a port channel, the physical interfaces assigned to the port channel are automatically
congured; you cannot assign the service-class dynamic command to individual interfaces in a port
channel.
• All dot1p trac is mapped to Queue 0 unless you enable the service-class dynamic dot1p
command on an interface or globally.
• Layer 2 or Layer 3 service policies supersede dot1p service classes.
strict-priority queue
Congure a unicast queue as a strict-priority (SP) queue.
S3048–ON
Syntax
strict-priority queue unicast number
Parameters
unicast number Enter the keyword unicast then the queue number. The range is from 1 to 3.
Defaults none
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.1.1.1 Introduced on the E-Series.
Usage Information
After you congure a unicast queue as strict-priority, that particular queue, on the entire chassis, is treated
as a strict-priority queue. Trac for a strict priority is scheduled before any other queues are
serviced. For example, if you send 100% line rate trac over the SP queue, it starves all other queues on the
ports on which this trac is owing.
1210
Quality of Service (QoS)