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red ethernet eth interfaces velocidad

ANTECEDENTES

Tenemos una tarjeta de red, y queremos saber si soporta velocidades de 10000mbps ('gigabit')

SOLUCIÓN

(Como root)

1. Suponiendo que la tarjeta de red sea 'etho':

dmesg | grep eth0
[    1.990066] e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
[  536.704969] e1000: eth0: e1000_watchdog: NIC Link is Up 10 Mbps Half Duplex, Flow Control: None
[  758.407797] eth0: no IPv6 routers present

En este caso va a 10mbps = mojón

Mejor instalar ethtool que te dice todo lo que soporta y a cuanto está ahora:

#apt-get install ethtool

# ethtool eth0
Settings for eth0:
      Supported ports: [ MII ]
      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 auto-negotiation: Yes
      Speed: 100Mb/s
      Duplex: Full
      Port: MII
      PHYAD: 0
      Transceiver: external
      Auto-negotiation: on
      Supports Wake-on: g
      Wake-on: d
      Link detected: yes