Collecting Device Serial Numbers and Asset Tags over SNMP

A few weeks ago, one of our customers asked us if we could pull serial numbers out of Cisco devices because this would be very useful for their MSSP business. We were able to update the scan engine quick and this feature is now included as of release 1.15.3. Pulling serial numbers remotely can be very useful to for support questions and to see if a device’s warranty has expired and it should be replaced. You must have SNMP credentials (or the v2 community “public”) configured for your scans for this query to work.

If taking old equipment off the network is your use case, Rumble can also show the device age based on the MAC address manufacturing date.

Finding Device Serial Numbers in Rumble

In your Rumble Console, go to Inventory in the left navigation and enter:

protocol:snmp has:snmp.serialNumbers

Finding device serial numbers in Rumble

Clicking on a host in this list and scrolling down to the SNMP section, we see the serial number for this Netgear device:

Finding device serial numbers in Rumble

Clicking on the left-side search icon will produce a report of all serial numbers found across the organization:

Finding device serial numbers in Rumble

Finding Asset Tags

A similar feature enables you to find the asset tags of Dell iDRAC systems, which are stored in the snmp.sysName property. A good query to use to find these is:

protocol:snmp has:"snmp.sysName"

Finding device serial numbers in Rumble

You can also filter for specific asset tags. A good query to find Dell iDRAC Asset Tags is:

protocol:snmp snmp.sysName:"drac-"

Finding device serial numbers in Rumble

Clicking on the left-side search icon will produce a report of all SNMP system names across the organization, including the Dell iDRAC asset tags. These asset tags can be queried online from the Dell website to obtain the full specification of the hardware.

Finding device serial numbers in Rumble

Try Rumble to Manage Your Network

If you haven’t had a chance to try Rumble, or would like to find serial numbers & asset tags on your internal network, sign up for a free trial and let us know what you think!