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Juniper EX series sflow monitoring

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We are testing PRTG with our Juniper equipment. We're using sflow to gather data.

The traffic volumes we're seeing for the sflow information (we're using sflow to monitor two ports on an EX4300 switch) are much lower than what we're seeing in Cacti, which we use to just track overall usage.

Is this normal, or is there something wrong with our configuration? We expected that the total traffic graph we see in PRTG would be similar to what we see in Cacti.

This is the sflow configuration on the EX4300:

polling-interval 60; sample-rate { ingress 1000; egress 1000; } source-ip 10.x.y.5; collector 10.x.y.2 { udp-port 6343; } interfaces ge-0/0/0.0; interfaces ge-0/0/1.0;

juniper junos sflow

Created on Oct 7, 2014 12:42:53 AM by  ssouthern (0) 1



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Hello,

Thank you very much for using PRTG. May I ask, which exact version of PRTG are you running? Also, please add SNMP Traffic Sensors monitoring the same two interfaces.
Please also bear in mind to not compare live speed values on the sensors, this is timing depending and thus could result in very different numbers. But compare volumes of at least hour long periods.

best regards.

Created on Oct 10, 2014 12:39:25 PM by  Torsten Lindner [Paessler Support]



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