`mii-tool` ( 8 )

просматривать, управлять статусом интерфейса, независимым от медиа (view, manipulate media-independent interface status)

Мануал на русском

Формат

Имя (Name)

mii-tool - view, manipulate media-independent interface status

Синопсис (Synopsis)

mii-tool [-v, --verbose] [-V, --version] [-R, --reset] [-r, --restart] [-w, --watch] [-l, --log] [-A, --advertise=media,...] [-F, --force=media] [-p, --phy=addr] interface ...

Описание (Description)

This utility checks or sets the status of a network interface's Media Independent Interface (MII) unit. Most fast ethernet adapters use an MII to autonegotiate link speed and duplex setting.

Most intelligent network devices use an autonegotiation protocol to communicate what media technologies they support, and then select the fastest mutually supported media technology. The -A or --advertise options can be used to tell the MII to only advertise a subset of its capabilities. Some passive devices, such as single-speed hubs, are unable to autonegotiate. To handle such devices, the MII protocol also allows for establishing a link by simply detecting either a 10baseT or 100baseT link beat. The -F or --force options can be used to force the MII to operate in one mode, instead of autonegotiating. The -A and -F options are mutually exclusive.

The default short output reports the negotiated link speed and link status for each interface.

Параметры (Options)

-v, --verbose
              Display more detailed MII status information.  If used
              twice, also display raw MII register contents.
              Alert: If used three times, will force reading all MII
              registers, including non standard ones. It's not
              guaranteed any valid answer from PHY while PHY
              communication can even hang.  With driver e1000e will fail
              while reading register 0x07.

       -V, --version
              Display program version information.

       -R, --reset
              Reset the MII to its default configuration.

       -r, --restart
              Restart autonegotiation.

       -w, --watch
              Watch interface(s) and report changes in link status.  The
              MII interfaces are polled at one second intervals.

       -l, --log
              Used with -w, records link status changes in the system
              log instead of printing on standard output.

       -F media, --force=media
              Disable autonegotiation, and force the MII to either
              100baseTx-FD, 100baseTx-HD, 10baseT-FD, or 10baseT-HD
              operation.

       -A media,..., --advertise=media,...
              Enable and restart autonegotiation, and advertise only the
              specified media technologies.  Multiple technologies
              should be separated by commas.  Valid media are 100baseT4,
              100baseTx-FD, 100baseTx-HD, 10baseT-FD, and 10baseT-HD.

       -p addr, --phy=addr
              Override the MII address provided by kernel with value
              addr.

Диагностика (Diagnostic)

SIOCGMIIPHY on 'eth?' failed: Invalid argument If the interface is not running (up), kernel will refuse to report its link state.

SIOCGMIIPHY on 'eth?' failed: Operation not permitted Most kernels restrict access to root.

SIOCGMIIPHY on 'eth?' failed: No such device This error is shown, if the kernel does not know about the named device.

SIOCGMIIPHY on 'eth?' failed: Operation not supported The interface in question does not support MII queries. Most likely, it does not have MII transceivers, at all.