POE Hat CRC errrors
Posted: Thu Sep 06, 2018 8:34 pm
I received two POE hats and Pi 3 B+s. When connected to a Meraki MS220-8P switch both POE hats on each Pi 3 B+ generate a large number of CRC alignment errors on the switch. When I remove the POE hat and power the Pi 3 B+s with an external USB power supply, the switch does not indicate any CRC errors. In addition to the CRC errors, I also notice a throughput difference with the POE Hat, which is probably attributable to the CRC errors and packet retransmits. Any ideas what the issues my be. Both systems are generating the CRC errors with a fully updated Raspbian Stretch system.