Administrator Guide
Version Description
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 congure a unicast queue as strict-priority, that particular queue, on the entire chassis, is treated as a
strict-priority queue. Trac for a strict priority is scheduled before any other queues are serviced. For
example, if you send 100% line rate trac over the SP queue, it starves all other queues on the ports on which this
trac is owing.
Policy-Based QoS Commands
Policy-based trac classication is handled with class maps. These maps classify data trac into one of eight classes . Dell Networking OS
enables you to match multiple class maps and specify multiple match criteria. Policy-based QoS is not supported on logical interfaces, such
as port-channels, VLANS, or loopbacks.
bandwidth-percentage
Assign a percentage of weight to the class/queue.
S3048–ON
Syntax
bandwidth-percentage percentage
To remove the bandwidth percentage, use the no bandwidth-percentage command.
Parameters
percentage Enter the percentage assignment of bandwidth to the class/queue. The range is from 1 to
100% (granularity 1%).
Defaults none
Command Modes CONFIGURATION (conf-qos-policy-out)
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
1256 Quality of Service (QoS)