Setup Guide

Version Description
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.
7.4.1.0 E-Series Only: Added the percentage decimal value option.
6.5.1.0 Introduced on the E-Series.
xoff-state threshold polling-count
When a lossless queue in an interface is not able to forward traffic for a particular duration of time, it is detected as PFC storm.
You can set the duration by providing the number of polling intervals. If a port/priority remains in xoff state for the specified
duration, then it is detected as PFC storm condition.
Syntax
xoff-state threshold polling-count {number of polling-interval}
Parameters
number of polling
interval
Enter the number of polling intervals. The range is from 2 to 10.
Defaults 2
Command Modes CONFIGURATION (conf-storm-control-pfc)
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S6000, S6000–ON, S61000–ON, Z9100–ON.
Usage
Information
The xoff-state threshold polling-count command is used to set the number of times the
polling should be done. If a port/priority remains in the ‘xoff’ state for the configured threshold number
of polling-intervals, then it would be detected as PFC storm condition. The ‘xoff’ state means no
transmission of data happens out of a port/queue even though there are packets buffered in that queue.
Example Use the storm-control pfc command in the configuration mode to enter the ‘storm-control-pfc'
configuration mode. The commands provisioned in this mode are applicable for all the interfaces that have
PFC storm enabled.
DellEMC(conf)#storm-control pfc
DellEMC(conf-storm-control-pfc)#xoff-state threshold polling-count 2
1456 Storm Control