View the NIC operating mode and speed in linux.

Check the NIC working mode and speed of the linux system. Sometimes, we need to check the NIC working mode and speed of the linux system. The commonly used commands are mii-tool and ethtool, let's take a look at the following. View eth0 Nic information at www.2cto.com [root @ cloud ~] # Mii-tool-v affinity: negotiated 100baseTx-FD flow-control, link okproduct info: vendor 00:00:20, model 32 rev 1 basic mode: autonegotiation enabledbasic status: autonegotiation complete, link okcapabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD running: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-controllink partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-cont Rol can see from the above that the eth0 works m in full duplex adaptive mode [root @ cloud ~] # Ethtool eth0Settings for eth0: Supported ports: [tp mii] Supported link modes: 10 baseT/Half 10 baseT/platform/Half 100 baseT/FullSupports auto-negotiation: YesAdvertised link modes: 10 baseT/Half 10 baseT/Full100baseT/Half 100 baseT/FullAdvertised pause frame use: incluric Receive-onlyAdvertised auto-negotiation: YesLink partner advertised link modes: 10 baseT/Half 10 baseT/Full100baseT/Half 100bas ET/FullLink partner advertised pause frame use: Your Ric Receive-onlyLink partner advertised auto-negotiation: YesSpeed: 100 Mb/sDuplex: FullPort: MIIPHYAD: 0 cursor: internalAuto-negotiation: onSupports Wake-on: pumbgWake-on: gCurrent message level: 0x00000033 (51) Link detected: yes [root @ cloud ~] #