Difference between revisions of "Ethtool"
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<code>ethtool</code><ref>http://man7.org/linux/man-pages/man8/ethtool.8.html</ref> command is used to view and modify network device drivers setting, in particular wired [[Ethernet]] devices. | <code>ethtool</code><ref>http://man7.org/linux/man-pages/man8/ethtool.8.html</ref> command is used to view and modify network device drivers setting, in particular wired [[Ethernet]] devices. | ||
| + | * <code>[[ethtool --help]]</code> | ||
* <code>ethtool [[eno]]1</code> | * <code>ethtool [[eno]]1</code> | ||
* <code>[[ethtool eth0]]</code> | * <code>[[ethtool eth0]]</code> | ||
* <code>ethtool -i eno1</code> | * <code>ethtool -i eno1</code> | ||
| + | * <code>[[ethtool -S]] eno1</code> | ||
| + | * <code>[[ethtool -X]]</code> | ||
ethtool -i eth2 | ethtool -i eth2 | ||
| Line 38: | Line 41: | ||
| − | + | * <code>[[ethtool --show-offload]] eno0</code> | |
== Examples == | == Examples == | ||
| Line 69: | Line 72: | ||
PHYAD: 4 | PHYAD: 4 | ||
Transceiver: internal | Transceiver: internal | ||
| − | + | Auto-negotiation: on | |
| − | + | MDI-X: off | |
| − | Supports Wake-on: g | + | [[Supports Wake-on]]: g |
Wake-on: g | Wake-on: g | ||
Current message level: 0x000000ff (255) | Current message level: 0x000000ff (255) | ||
| Line 189: | Line 192: | ||
* {{ethtool}} | * {{ethtool}} | ||
* {{LSO}} | * {{LSO}} | ||
| − | |||
* {{Linux ethernet}} | * {{Linux ethernet}} | ||
| − | |||
* {{ethernet}} | * {{ethernet}} | ||
[[Category:networking]] | [[Category:networking]] | ||
Latest revision as of 10:57, 22 April 2024
ethtool[1] command is used to view and modify network device drivers setting, in particular wired Ethernet devices.
ethtool --helpethtool eno1ethtool eth0ethtool -i eno1ethtool -S eno1ethtool -X
ethtool -i eth2 driver: eth2 version: 2.0 firmware-version: N/A bus-info: N/A
ethtool -S eno1 --statistics
ethtool -K eth0 gso off gro off tso off
ethtool -K eth0 gso on gro on tso on Actual changes: generic-segmentation-offload: on generic-receive-offload: on
ethtool -K eno1 tx on rx on Actual changes: rx-checksumming: on tx-checksumming: on tx-checksum-ip-generic: on tcp-segmentation-offload: on tx-tcp-segmentation: on
tx-tcp-mangleid-segmentation: on tx-tcp6-segmentation: on
- Disable TCP checksum offloading
ethtool -K eth0 tx off rx off
Examples[edit]
ethtool eno1
Settings for eno1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Supported FEC modes: Not reported Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Link partner advertised pause frame use: No Link partner advertised auto-negotiation: Yes Link partner advertised FEC modes: Not reported Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 4 Transceiver: internal Auto-negotiation: on MDI-X: off Supports Wake-on: g Wake-on: g Current message level: 0x000000ff (255) drv probe link timer ifdown ifup rx_err tx_err Link detected: yes
ethtool eno1
Settings for eno1:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: off (auto)
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
ethtool ens3f1 Settings for ens3f1: Supported ports: [ ] Supported link modes: 1000baseT/Full 1000baseKX/Full 10000baseT/Full 1000baseX/Full 10000baseSR/Full 10000baseLR/Full Supported pause frame use: Symmetric Supports auto-negotiation: Yes Supported FEC modes: Not reported Advertised link modes: 1000baseT/Full 1000baseKX/Full 10000baseT/Full 1000baseX/Full 10000baseSR/Full 10000baseLR/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Speed: Unknown! Duplex: Unknown! (255) Port: Other PHYAD: 0 Transceiver: internal Auto-negotiation: off Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: no
ethtool -i eno1 driver: e1000e version: 3.2.6-k firmware-version: 0.5-4 expansion-rom-version: bus-info: 0000:00:1f.6 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: no
ethtool eth2 Settings for eth2: Supported ports: [ MII ] Supported link modes: Supports auto-negotiation: No Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Speed: 1000Mb/s Duplex: Full Port: MII PHYAD: 0 Transceiver: external Auto-negotiation: off Current message level: 0x00000236 (566) probe link ifdown ifup intr Link detected: yes
ethtool enx0t6b8f279a99 Settings for enx0t6b8f279a99: Current message level: 0x00000007 (7) drv probe link Link detected: yes
Related terms[edit]
ip link set eth0 up- TCP Segmentation Offload (TSO)
- Generic Segmentation Offload (GSO)
- Generic Receive Offload (GRO)
See also[edit]
ethtool,ethtool --show-offload,ethtool -S- Large send offload (LSO), TCP Segmentation Offload (TSO), Generic Segmentation Offload (GSO), Generic Receive Offload (GRO)
ifconfig,ethtoolor obsoletemii-tool(mii-tool -v eth0)nmcli device show,eth0, Network manager- Ethernet: MII, MDI, bonding, etherchannel, STP, ARP, MAC, STP, Jumbo frames, 802.1X, MTU, Ethernet In-Band Access (IBA), LACP, Multicast, Broadcast, SPI
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