OK, thanks for the confirmation.

My router is a LinkSys WRT32X running DD-WRT. There is no mention of IGMP Snooping in any of the DD-WRT menus, however, there is a Filter Multicast option which is enabled by default. TBH, I really...

IGMP Snooping was the cause! Once it had been disabled on both switches, the radio worked perfectly with both LAG cables connected. Obviously IGMP Snooping does not work properly!

I have a pair of SG108E switches connected with a 2-port LAG acting as my LAN core. No other options on either switch, other than the IP configuration, have been changed from default. For weeks, this...

Can TL-SG108E v3 firmware be upgraded successfully to v4 ? I have read elsewhere here, that v2 can be upgraded to v3.