SNMP
vScope can inventory a wide range of network assets using SNMP, such as printers, switches, and routers. Ensure the correct credentials and IP range access settings are in place to enable successful discovery.
Requirements for SNMP Discovery
- Credential: Provide the appropriate credential for the SNMP version (v1, v2c, or v3).
- Network Access: The vScope server must have access to the network IP range for SNMP queries.
- SNMP Ports: Typically uses UDP port 161 for standard SNMP and UDP port 10161 for secure SNMPv3.
Configuring SNMP Versions
SNMP v1 & v2c
For SNMP versions 1 and 2c, you only need to enter the community string for devices in the SNMP credential. Commonly, this is set to "public" in lowercase by default. Then, specify the IP ranges where these devices are located.
SNMP v3
SNMP version 3 requires additional credentials due to enhanced security. Enter all necessary details and configure the target IP ranges for devices using SNMPv3.
Collecting Custom OIDs
By using Tags from Discovery, you can collect custom values from OIDs on network devices and add them as tags in vScope.
Steps to Add Custom OIDs
-
Open SNMP Credential Settings
Go to the Advanced section of your SNMP credential configuration. -
Input Extra OIDs
Enter the specific OIDs you wish to collect from your network devices. Separate multiple OIDs with commas. -
Save the Credential
Save the changes. During the next discovery scan, vScope will automatically pull data from the specified OIDs and walk down the Management Information Base (MIB) tree from those points. -
Run a Discovery
Start a Discovery with the updated SNMP credential settings. -
Configure Tags from Discovery
Once the discovery scan completes, go to Tags > Tags from Discovery to manage the collected values. Configure the tags as desired for improved visibility in vScope. -
Run Another Discovery
Initiate another discovery to apply the new tag configuration to all SNMP devices of the same model.
You can now access your custom OID values within vScope, making it easier to track and analyze specific attributes of SNMP-managed assets.
Additional Resources
Common Errors
| Error | What happened? | Suggested action |
|---|---|---|
| No response: Connection timed out | The SNMP credential was unable to connect to the target. | Make sure that the correct SNMP version and port are being used for the target. |
| Target did not respond. It might be down or access is denied | Generic error for failed the discovery. | Common errors: Device not responding or Invalid credentials |