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Monitoring and alerting on sub-interfaces

shuth over 11 years ago

Hi all,

I was wondering if anyone out there has any advice/tips/experience on monitoring interfaces/subinterfaces and alerting. We have a lot of sites with a serial interface containing multiple sub-interfaces. All of these interfaces are being monitored by NPM. Additionally, we have an alert configured that triggers off an interface going down and sends an email to our ticketing system.

The problem is what happens when the physical interface goes down. The system generates a lot of incidents when only one is necessary to say the physical interface is down.

For example, we have Serial0/0 and two subinterfaces S0/0.101 and S0/0.201.

Case 1: Sub-interface S0/0.101 goes down. One email/ticket generated.

Case 2: Physical interface S0/0 goes down. Three emails/tickets generated - is it possibly for the system to detect this and only send a single ticket for the physical?

I thought about adding in interface dependencies but with at least several hundred sites similar to this scenario, I don't think the system could cope checking these dependencies all the time, not to mention the administrative headache.

Am I limited to reporting on all the interfaces or a subset (all the subs, or all the physicals)?

Comments would be appreciated.

Cheers,

Steven

Top Replies

christopher.t.jones123 over 2 years ago in reply to zkahl +1

zkahl , couple of different way I can think of to do this. The one that sticks out at me is you can change your alert criteria to only alert on "Physical" interfaces which if SolarWinds is polling the…

0 aguley over 5 years ago

Has anyone come up with a solution for this? I am in the same situation where I have a bunch of sub-interfaces. I only want to get notified when the physical interface goes down. Currently I get 2 emails one for the physical interface and one for the sub.
Thanks
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0 zkahl over 2 years ago in reply to aguley

Did you ever find a solution for this? I would like this as well.

Thanks

Zak
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0 christopher.t.jones123 over 2 years ago in reply to zkahl

zkahl, couple of different way I can think of to do this. The one that sticks out at me is you can change your alert criteria to only alert on "Physical" interfaces which if SolarWinds is polling the sub-interfaces it should be polling them as Virtual which would then be scoped out of the alert. Take a look at that and see if it'll fit your need.
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0 christopher.t.jones123 over 2 years ago in reply to zkahl

zkahl, Could create a different alert that looks at whether or not utilization for those ISP interfaces drops below a certain threshold.
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0 zkahl over 2 years ago in reply to christopher.t.jones123

Physical good idea, but for ISP interfaces doesn't work all the time. Many times interface is up to to the router but traffic is down.
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