This Article explains below Syslog messages
<11>Aug 22 22:45:53 labroot : %USER-3: fpc2 fpc2 kernel: fsl_mac ffe4f0000.ethernet: 10G MAC got RX FIFO Error = 8
Customers might get this syslog message on the device.
This syslog message means TSEC (ethernet interface on PPC under PTX10008 FPC) got some error frame.
If the occurrence only once or twice we can safely ignore it.
If the message is coming frequently and repeatedly please open a support case and contact JTAC.