- SYNOPSIS¶
- DESCRIPTION¶
- OPTIONS¶
- DIAGNOSTICS¶
- AUTHORS¶
- SEE ALSO¶
- Утилита mii-tool
- Управление сетевыми интерфейсами и ограничение скорости — mii-t00l
- Linux mii-tool command
- Syntax
- Options
- Examples
- Related commands
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- DIAGNOSTICS
- AUTHORS
- SEE ALSO
- Mii tool in linux
- NAME
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- DIAGNOSTICS
- AUTHORS
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 .
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.
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.
DIAGNOSTICS¶
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.
AUTHORS¶
David Hinds — dhinds@pcmcia.sourceforge.org
Donald Becker — becker@scyld.com
Bernd Eckenfels — net-tools@lina.inka.de
SEE ALSO¶
Утилита mii-tool
Управление сетевыми интерфейсами и ограничение скорости — mii-t00l
mii-t00l — утилита используется для просмотра и управления сетевыми интерфейсами в Linux. Одной из интересных особенностей ее использования — это в качестве установления определенной скорости на сетевом интерфейсе в Linux.
Для переключения в 10 мегабитный полудуплексный реим
#mii-tool -F 10baseT-HD
Для переключения в 10 мегабитный полнодуплексный режим
#mii-tool -F 10baseT-FD
Для 100 мегабитного режима
#mii-tool -F 100baseTx-FD
#mii-tool -F 100baseTx-HD
Для просмотра
# mii-tool -v eth0
eth0: 10 Mbit, half duplex, link ok
product info: vendor 00:aa:00, model 56 rev 0
basic mode: 10 Mbit, half duplex
basic status: link ok
capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
Полудуплексный режим — передача ведётся в обоих направлениях, но с разделением по времени называют полудуплексным.
В определенный момент времени передача происходит только в одном направлении.
Дуплексный режим — прием и передача происходят одновременно.
Общая скорость обмена в дуплексном режиме вполне может достигатьдвойного значения . Если использзовать Fast Ethernet со скоростью 100 мб/с, то скорость может быть 200 Мбит/с (100 — передача и 100 — приём).
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Linux mii-tool command
On Linux operating systems, the mii-tool utility checks or sets the status of a network interface’s MII (Media Independent Interface) unit. Many Ethernet adapters use an MII to autonegotiate link speed and duplex setting.
Syntax
mii-tool [-v, --verbose] [-V, --version] [-R, --reset] [-r, --restart] [-w, --watch] [-l, --log] [-A, --advertise=media. ] [-F, --force=media] [interface . ]
Options
| -v, —verbose | Display more detailed MII status information. If used twice, also display raw MII register contents. |
| -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. |
Examples
Displays information similar to the example output below.
product info: Yukon 88E1011 rev 4 basic mode: autonegotiation enabled basic status: autonegotiation complete, link ok capabilities: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD advertising: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control link partner: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
Related commands
ifconfig — View or modify the configuration of network interfaces.
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 .
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.
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.
DIAGNOSTICS
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.
AUTHORS
David Hinds — dhinds@pcmcia.sourceforge.org
Donald Becker — becker@scyld.com
Bernd Eckenfels — net-tools@lina.inka.de
SEE ALSO
Package name: core/net-tools Version: 2.10-2 Upstream: http://net-tools.sourceforge.net/ Licenses: GPL2 Manuals: /listing/core/net-tools/ Table of contents
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The website is available under the terms of the GPL-3.0 license, except for the contents of the manual pages, which have their own license specified in the corresponding Arch Linux package.
Mii tool in linux
NAME
mii-tool - view, manipulate media-independent interface status
SYNOPSIS
mii-tool [-v, --verbose] [-V, --version] [-R, --reset] [-r, --restart] [-w, --watch] [-l, --log] [-A, --advertise=media. ] [-F, --force=media] [interface . ]
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. If an interface or interfaces are not specified on the command line, then mii-tool will check any available interfaces from eth0 through eth7.
OPTIONS
-v, --verbose Display more detailed MII status information. If used twice, also display raw MII register contents. -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.
DIAGNOSTICS
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.
AUTHORS
David Hinds - dhinds@pcmcia.sourceforge.org Donald Becker - becker@scyld.com Bernd Eckenfels - ecki@debian.org
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