I use LibreNMS to monitor entire infrastructure and it works very well.
I think it would be very interesting if LibreNMS could monitor and generate centralized alerts for Veeam solutions also.
- This is a KB article about Veeam One and SNMP: KB1040: Veeam ONE Monitor SNMP MIBs
- And this is a discussion about Veeam B&R and SNMP: Monitoring Backup Jobs with Snmp - Veeam R&D Forums
I know that is not possible to monitor B&R by querying an SNMP, but only to receive SNMP traps.