ethtoolコマンドでネットワークカード(NIC)の詳細な情報を確認することができます。
まずは、ifoccnfigコマンドでNICの名前を調べます。 # ifconfig eth0 Link encap:Ethernet HWaddr D8:D3:85:AF:76:E4 inet addr:192.168.xx.xxx Bcast:192.168.xx.xxx Mask:255.255.255.0 inet6 addr: fe80::dad3:85ff:feaf:76e4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:97013127 errors:0 dropped:0 overruns:0 frame:0 TX packets:96626474 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2389392368 (2.2 GiB) TX bytes:2998857343 (2.7 GiB) Interrupt:169 Memory:fe9f0000-fea00000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:15398022 errors:0 dropped:0 overruns:0 frame:0 TX packets:15398022 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1254672590 (1.1 GiB) TX bytes:1254672590 (1.1 GiB) ethtoolコマンドでNICの名前を指定します。 # ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on Supports Wake-on: g Wake-on: g Current message level: 0x000000ff (255) Link detected: yes
