Solved

Troubleshooting SNMP Alerts with Solarwinds IP Monitor 8.5

Posted on 2009-05-09
5
877 Views
Last Modified: 2012-05-06
I just moved our IP Monitor 8.5 instance from an old Windows 2000 physical machine to a Windows 2003 Virtual Machine running on ESX.  The migration went good for the most part, and the only remaining issue is getting the SNMP alerts to work right.  The SNMP Cold Starts seem ok, but the straight SNMP alerts are all down with a status of "The remote device failed to respond"

I don't have the luxury of knowing if these were 100% before the migration since the old machine is off and the license removed (parked).  There are only two SNMP alerts that work - they all use one of two communities, which are called "CommunityA" and "CommunitB" (not real names).  They all use port 161 and the OID is the same for system uptime.

I don't know a lot about SNMP and am wondering if I have to troubleshoot the communities somehow, but can't find them in any of the pages of IP Monitor.  Any help is greatly appreciated.
0
Comment
Question by:rosederekj
  • 2
  • 2
5 Comments
 
LVL 32

Expert Comment

by:Kamran Arshad
ID: 24351969
Hi,

The error "The remote device failed to respond" suggests that your IP Monitor is unable to connect to the device. Have you tried to manually ping any of the devices on which you are getting alert errors?
0
 

Author Comment

by:rosederekj
ID: 24352299
the IP Monitor can connect, as the PING alerts for the same host are working fine.  For example, let's say MACHINEA has a PING alert and a SNMP alert.  The PING alert is working and online, but the SNMP alert shows the error above.

The only thing I could figure was it had something to do with the community setting?
0
 
LVL 32

Expert Comment

by:Kamran Arshad
ID: 24352523
Yes could be. Do you have a common community string on all machines. You can verify the community string on each machine if it is correct and co-relate it to the community strings you have put in your IP Monitor.
0
 
LVL 3

Accepted Solution

by:
c01000100 earned 500 total points
ID: 24353105
snmp strings are case sensitive...ensure you have the correct letters capitalized if there are any
you might also try having log messages generated when snmp responses are requested at the managed device end to verify that the request arrives at the destination.  also if you have changed ip addresses of your management machine, a firewall may be blocking the new ip address, or the managed device may have an access-list determining what machines are allowed to make snmp requests against it.
0
 

Author Closing Comment

by:rosederekj
ID: 31579779
That was it - the machines were hard coded to accept SNMP monitoring from a specific IP.  When I changed the new machine to the IP of our old monitoring machine, it worked.  Thanks!
0

Featured Post

What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

Join & Write a Comment

David Varnum recently wrote up his impressions of PRTG, based on a presentation by my colleague Christian at Tech Field Day at VMworld in Barcelona. Thanks David, for your detailed and honest evaluation!
Find out what Office 365 Transport Rules are, how they work and their limitations managing Office 365 signatures.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

746 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now