Reference Guide

916 | sFlow
www.dell.com | support.dell.com
Polling Intervals
The sflow polling-interval command configures the polling interval for an interface in the maximum
number of seconds between successive samples of counters to be sent to the collector. This command
changes the global default counter polling (20 seconds) interval. You can configure an interface to use a
different polling interval.
The polling interval can be configured globally (in CONFIGURATION mode) or by interface (in
INTERFACE mode) by executing the interval command:
.
Sampling Rate
Sampling Rate is supported on platform e
t
.
The sFlow sampling rate is the number of packets that are skipped before the next sample is taken. sFlow
does not have time-based packet sampling.
The
sflow sample-rate command, when issued in CONFIGURATION mode, changes the default
sampling rate. By default, the sampling rate of an interface is set to the same value as the current global
default sampling rate.If the value entered is not a correct power of 2, the command generates an error
message with the previous and next power-of-2 value. Select one of these two number and re-enter the
command. (For more information on values in power-of-2, refer to Sub-sampling.)
The sample rate can be configured globally or by interface using the sample rate command:
Command Syntax Command Mode Usage
sflow polling-interval
interval value
CONFIGURATION or
INTERFACE
Change the global default counter polling interval.
interval value—in seconds.
Range: 15 to 86400 seconds
Default: 20 seconds
Command Syntax Command Mode Usage
[no] sflow sample-rate
sample-rate
CONFIGURATION
or
INTERFACE
Change the global or interface sampling rate. Rate must be entered in
factors of 2 (eg, 4096, 8192).
sample-rate range:
256-8388608 for C-Series and S-Series
2-8388608 for E-Series