Value cat /proc/kmsg Mode Behavior ethtool Note0 <4>change mode to 0(GE/FE PHY) TP 1GbaseT/100baseT 0x020 DFP-34X-2C2 Auto Detect1 <4>change mode to 1(Fiber 1G) FIBER 1GbaseX 0x20000000000 V2801F Default2 <4>change mode to 2(SGMII PHY) TP MII 1Gb PHY TWCGPON657 Default3 <4>change mode to 3(SGMII MAC) MII 1Gb MAC DFP-34X-2C2 Default4 <4>change mode to 4(HiSGMII PHY) TP MII 2.5Gb PHY 5 <4>change mode to 5(HiSGMII MAC) MII 2.5Gb MAC 6 <4>change mode to 6(2500BaseX) FIBER 2500baseX 0x8000 7 <4>change mode to 7(SGMII Force) TP? 1GbaseT DFP-34X-2C2