Newbie not too experienced, so any help really appreciated and sorry for long description   We have 2 x Meraki MX100 (primary and backup) both connecting to WAN1 (Virgin / Hitron modem) and WAN2 (EIR) with load sharing enabled A few weeks ago WAN1 went down and Virgin replaced the Hitron router/modem Ever since, we have been experiencing high latency and 50-75% packet loss on WAN 1 (VIRGIN )   if a laptop is plugged directly into Virgin/Hitron, we get perfect results, ping times of 1-2ms, no data loss, internet speeds of 250Mb Virgin say their line and Hitron modem test fine and it has to be a Meraki problem or issue   We get the same results whether using the primary or secondary Meraki MX-100, so unlikely to be a port failure? We have changed out WAN and LAN cables and consistently get packet loss on WAN1 Firmware was updated to latest stable version   Meraki tech support did packet capture on Wan 1 and Wan 2. The output shows that MX 100 is sending TCP SYN packets but not receiving anything back.   Has anyone experienced anything similar with Virgin Ireland (Hitron) recently or any suggestions as to what we could try? Any advice or troubleshooting/testing suggestions really appreciated - many thanks ... View more