This document is a training session on OpManager, detailing prerequisites for installation, challenges in device discovery, and steps to simplify the discovery process. It includes real-life use cases and automation techniques for device addition through SNMP traps and API integration. Various network configurations and troubleshooting strategies are also discussed to enhance device monitoring efficiency.

2. Welcome to a free OpManager training
session

3. Trainer
Sharath Babu
Techinal Support Engineer

4. Part 1
Discovery and classification

5. Agenda
 Prerequisites for installing OpManager
 Understanding network infrastructure
 Challenges of device discovery
 5 important steps to simplify the discovery process in OpManager
 Real-life use cases

6. Prerequisites for installing OpManager: System
requirements
Quad-
core
processor
or higher
• MSSQL
• PGSQL
20GB8GB
• Window
s
• Linux
https://www.manageengine.com/network-monitoring/help/hardware-and-software-
requirements.html

7. Protocol Ports
SNMP 161 (UDP)
SNMP Traps 162 (UDP)
WMI 135 and 445, 5000 to 6000 (TCP) bidirectional
Telnet 23 (TCP)
SSH 22 (TCP)
ICMP/TCP Used to check the availability status and add a
device
Syslog 514 (UDP)
Web server (HTTPS/HTTP) 443/ 8060
Prerequisites for installing OpManager: Ports

8. Understanding network infrastructure

9. Building
A
Building
B
Building
C
Building
D
Central IT Building
Campus network

10. Network devices 75
SQL servers 25
Exchange servers 10
Desktops
650
Printers 20
Network topology of Central
IT Building
Mail server
SQL server
FTP server
Printer
RADIUS

11. Challenges of device discovery

12. How to prepare for network
discovery
1. Add admin users in OpManager
2. Ensure all devices are reachable from
the OpManager server
3. Add credentials for the respective device
or network

13.  Not all devices present in the CSV file need
to be monitored
 What happens if you import all the devices
without applying filters?
• Costs you a license
• Adds unnecessary load to the
server
Challenges with importing devices from a CSV
file

14. Task 3
Task 2
Task 1
Every time I add a SQL server, I set up the
same set of services, processes, and
application monitors. How do I automate this
process?
I've grouped all MSSQL servers in a Business
View for our California site, and more servers
will be added in the future. Can I place these
servers in the California group automatically?
I've set up a notification profile to trigger an
email notification for service down alarms. Can I
assign this notification profile automatically
when a server is added?
SQL
server
Challenges in post-discovery jobs:
Configurations

15. Challenges in post-discovery jobs: Interface
discovery
I only want to discover the ethernet interfaces
from my switches. Can I select the required
network interface type while adding the switch?

16. Network today
Network after two
weeks
Schedule network
discovery
Discovery
Reports
Ensure devices
added to the network
are scanned
successfully
Challenges in automating device addition:
Discovery Schedule

17. 5important steps to simplify
the discovery process in OpManager
Quick demo

18. Real-life use cases

19. US
A
Colorado California
Denver Aurora
MilpitasSan Jose
Rocheste
r
New York
City
New York
Radio devices are installed in random locations every third week
Use case 1: Automate device addition by receiving SNMP trap
messages in OpManager
 Add multiple discovery profiles with possible
network range
 Enable device discovery via trap
• Settings > Discovery Settings >
Discover devices via Trap

20. Network topology of Building
D
Mail server
SQL server
FTP server
Printer
WEB server
192.168.49
.1
Use case 2: I don't have the
complete list of device details for Building
D's network, but I know the IP address of
the seed router. Is there a way to
discover devices in OpManager using the
router IP?
 Add a discovery profile using Layer
2 discovery
• Settings > Discovery Profile
> Layer 2
Discovery
Devices discovered through Layer 2
discovery will have the dependent
devices configured automatically

21. Use case 3: Adding devices from ServiceNow to OpManager
A
PI
 Generate an API key for
OpManager
• Settings > Rest API >
Generate API Key
 Visit api.opmanager.com and get
the API call for adding a device,
deleting a device, etc.

22. Device properties
- IP address
- RAM size
- Hard disk size
- Exchange version
- Etc.
Use case 4: Update interface/device properties with Discovery
Schedule
Interface properties
- Name
- Speed
- Description
- Admin/operational
status
- Etc.

23. Use case 5: How do I fix devices getting discovered as Unknown?
Unknown

24. Top fixes for failure
1
2
3
Open the recommended port in your firewall
Visit https://www.manageengine.com/network-monitoring/help/hardware-and-software-requirements.html
for a list of recommended ports
Update the password in OpManager
- Settings > Discovery > Credentials
Test the credentials periodically and see when the test
fails
- Settings > Discovery > Test Credentials
Create a new device template for the respective model
- Settings > Configuration > Device Template > Add Template

25. Questions?

26. www.manageengine.com
THANK YOU
Sharath Babu
sharathbabu.r@zohocorp.com