Administrator Guide

● werr: weighted elastic round robin (werr) provides low-latency scheduling for
priority traffic on port queues.
Defaults Weighted elastic round robin (WERR) scheduling is used to queue priority traffic.
Command Modes POLICY-MAP-OUT-ETS
Supported Modes Programmable-Mux (PMUX)
Command
History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
dot1p priority traffic on the switch is scheduled to the current queue mapping. dot1p priorities within the
same queue must have the same traffic properties and scheduling method.
ETS-assigned scheduling applies only to data queues, not to control queues.
The configuration of bandwidth allocation and strict-queue scheduling is not supported at the same time
for a priority group. If you configure both, the configured bandwidth allocation is ignored for priority-
group traffic when you apply the output policy on an interface.
Related
Commands
● bandwidth-percentage — bandwidth percentage allocated to priority traffic in port queues.
show dcb
Displays the data center bridging status, the number of PFC-enabled ports, and the number of PFC-enabled queues.
Syntax
show dcb [stack-unit unit-number]
Parameters
unit number Enter the DCB unit number. The range is from 0 to 5.
Command Modes EXEC Privilege
Supported Modes All Modes
Command
History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
Specify a stack-unit number on the Master switch in a stack.
Example
Dell#show dcb
stack-unit 0 port-set 0
DCB Status : Enabled
PFC Queue Count : 2
Total Buffer[lossy + lossless] (in KB) : 3822
PFC Total Buffer (in KB) : 1912
PFC Shared Buffer (in KB) : 832
PFC Available Buffer (in KB) : 1080
102 Data Center Bridging (DCB)