Linux查看网卡是千兆还是万兆网卡
目前用过的两个命令：
1、ethtool
ethtool 网络接口名
#ethtool em4 Settings for em4: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on MDI-X: Unknown Supports Wake-on: g Wake-on: d Link detected: yes
2、lspci当前是博通BCM5709千兆网卡Gigabit（万兆网卡显示为10-Gigabit）
#lspci -vvv | grep Ethernet 01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 GigabitEthernet (rev 20) Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet Product Name: Broadcom NetXtreme II Ethernet Controller 01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20) Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet Product Name: Broadcom NetXtreme II Ethernet Controller 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20) Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet Product Name: Broadcom NetXtreme II Ethernet Controller 02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20) Subsystem: Dell PowerEdge R710 BCM5709 Gigabit Ethernet Product Name: Broadcom NetXtreme II Ethernet Controller pcilib: sysfs_read_vpd: read failed: Connection timed out
小知识：
