Challenge
When creating rules for traffic throttling, the rules don’t take effect and jobs run at normal processing speeds.
Cause
One or more of the servers on which Veeam agents are running (repository server, Hyper-V host(s)/offhost proxy, VMware backup proxy) have more than one NIC.
Solution
Throttling rules must be created for all NICs for the machines on which Veeam Agents will run. When a job runs, a port for the veeamagent.exe process is opened on each NIC of the source and target servers, even if that NIC is not responsible for source agent to target agent data transfer. Below is an example of how the rules would need to be applied.
Source VMware backup proxy or Hyper-V host/Offhost proxy IPs: (2 NICs) 10.0.0.30, 192.168.1.35
Target repository/proxy server or target Hyper-V host (in the case of Hyper-V replication) IPs: (2 NICs) 10.0.0.31, 192.168.1.26