@Clive_A Thank you! All sites have WAN IPs on all connected WAN interfaces. Only Site 1 and 2 have two WAN connections. Site 1 ER8411 WAN Ports are SFP+WAN1 (static via DHCP 81.x.x.x/30) and WAN/LAN4...

@Clive_A Thanks for your reply! (sorry for german ping/tracert output) is there an option (I never found one) to enable ICMP replies on Omada? tracert from Site 1: Routenverfolgung zu...

Dear Community! I have some strange behavior on a multi-site environment with 2x ER8411, 2x ER7206, OC200, some APs and some SG and TL switches... Basically relevant for the problem are three sites:...