Community
- Command Central
- MVP Program
- Monthly Mission
- Blogs
- Groups
- Events
- Media Vault
Products
- Observability
- Network Management
- Application Management
- IT Security
- IT Service Management
- System Management
- Database Management
Content Exchange
- SolarWinds Platform
- Server & Application Monitor
- Database Performance Analyzer
- Server Configuration Monitor
- Network Performance Monitor
- Network Configuration Manager
- SQL Sentry
- Web Help Desk
Free Tools & Trials
Store

NTM scanning accuracy

NTM does not find some devices. I input 14 IP's into free form IP discovery, NTM finds 13 and leaves out 1. I can ping the missing IP, but NTM will not find it. Tried a new scan on just the missing IP, still could not find it?

Stumped

Find more posts tagged with

Accepted answers

All comments

rschroeder

Here are some basic questions that you may have assumed, but I'd like to cover them anyway:

Have you configured NTM to scan/discover that subnets in which those new IP addresses are located? I know it's a basic question, but it needs to be eliminated before moving on.
If NTM is in a different subnet than the new addresses, have you set NTM to use the right number of hops to get into the subnet(s) where those addresses are located?

maxsys

I have tried it all. Subnet, IP Range, Free form IP, Seed router, checked for the IP in Device tracker, etc. I can ping the IP but NTM does not find it on a scan. It makes me wonder what else it can’t discover?

The device in question is a UPS, there must be something peculiar with it.

rschroeder

Good, I'm glad to read you've covered the basics.

All of my UPS brands (APC, Eaton, Best, Merlin-Guerin) have a "Security" section to enter in allowed IP addresses of pollers--it works exactly like an ACL or White List. Does your UPS have a place in which to configure itself to allow polling from your NTM device? And if so, is it set to allow snmp from your NTM?

maxsys

That is good to know thanks! I will check with the contractor who dropped that system in. It’s a 2 way radio console system and these guys do not know IP.