Thursday, April 5, 2018

Incorrect SNMP Traffic Data on Subinterface

Howdy, I'm having a bit of an issue with our ASR1006, running IOS XE Version 03.16.02b.S, and bandwidth monitoring using PRTG

I have subinterface Te0/0/0.1201 with a 5gbps connection to another ISP. The physical interface only has this subinterface configured on it. Whenever traffic goes above 3.5gbps our prtg traffic monitor flatlines as if our upstream isp has some traffic policy in place that's stopping traffic. However, our sensor monitoring the physical interface (te0/0/0) is showing the correct traffic utilization past 3.5gbps.

We've decided to just use the physical interface for our aggregate monitoring but if we decide to use te0/0/0 for any other traffic we'd like to have a more granular breakdown. Any ideas why prtg is showing an incorrect flatline? We're using snmp v2c



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