Nagios Support Forum

I've used the built in switch/router wizard to monitor several switches in our environment. One of the devices we want to monitor consists of a port channel with many sub interfaces, each for a particular customer that we rate limit. The physical interfaces are shown as 10Gb, but we restrict down to in some cases 3Mb. In the case of the wizard, it put all of the sub interfaces at 20Gb because the port channel has 2x10Gb interfaces in it. From time to time customers increase their bandwidth.

Is there any reason or advantage into editing the MRTG config files for maximum bandwidth to match what the rate limiting? I think the check that Nagios XI makes just looks at the RRD file and uses whatever threshold you specify for checking the actual bandwidth as a warning or critical error.

In my case I made the changes to the MRTG files I referenced above prior to making the changes to the service checks. This is where I came to the conclusion that editing those files may just be a huge waste of time.

maglaubig wrote: Is there any reason or advantage into editing the MRTG config files for maximum bandwidth to match what the rate limiting?

Not that I can think of.

maglaubig wrote:In my case I made the changes to the MRTG files I referenced above prior to making the changes to the service checks. This is where I came to the conclusion that editing those files may just be a huge waste of time.

Indeed.

Scott, thanks for verifying. That actually makes me pretty happy because editing those files was a huge pain.

Here's for hoping this is a cautionary tale to anyone else on the forum.

maglaubig wrote:Scott, thanks for verifying. That actually makes me pretty happy because editing those files was a huge pain.

Here's for hoping this is a cautionary tale to anyone else on the forum.

Glad to help!