Benchmark each WAN bandwidth on multi-WAN setup ?

[CDuv]

Hello,

To periodically benchmark the bandwidth of my WAN connection I use speedtest-cli: which works fine.
But I want to extend this benchmark to the other WANs (I have a multi-WAN failover setup) so I guess I need a firewall rule with gateway policy to force traffic to go via the other WAN.

Say the computer running speedtest-cli has IP 192.168.0.100, I can add a OPNsense firewall rule "from=192.168.0.100; gw=WAN_FAILOVER" but I don't want enable/disable the rule each time... so I am looking for a way to make this permanent/stable.

I see 3 ways:

• Add virtual network interface (eg. eth0:1, eth0:2, ...) to the computer running speedtest-cli (with dedicated LAN IP address 192.168.0.x) for each WAN to benchmark (WAN_PRIMARY, WAN_FAILOVER) and add a OPNsense firewall rules for each WAN:
  
  • from=192.168.0.101; gw=WAN_PRIMARY
  • from=192.168.0.102; gw=WAN_FAILOVER
• Choose a remote speedtest server (get the list with speedtest-cli --list) for each WAN to benchmark (WAN_PRIMARY, WAN_FAILOVER) and add a OPNsense firewall rule per speedtest server (destination) IP address:
  
  • from=192.168.0.100; to=SpeedTestA; gw=WAN_PRIMARY
  • from=192.168.0.100; to=SpeedTestB; gw=WAN_FAILOVER
• Add one virtual network interface (eg. eth0:1) to the computer running speedtest-cli (with dedicated LAN IP address 192.168.0.101). This IP will be exclusively used by the computer for benchmark. Add a OPNsense firewall rule "from=192.168.0.101; gw=WAN_PRIMARY"  and use the OPNsense API to update (change gateway) and enable/disable the firewall from computer running speedtest-cli.

I think solution 1 (virtual network interface) is the best but I am open to other solutions I have not thought about