Można zredukować prędkość z obecnego 1Gbps do 100mbps lub 10mbs. Można też bawić się ustawieniem duplexu ale na początek może wystarczy sama prędkość.
Na moim przykładzie (w Twoim przypadku zmieniasz eth1 na enp12s0):
Zmiana na 10:
Kod:
$sudo ethtool -s eth1 autoneg off speed 10
Podgląd czy speed zmieniło się na 10:
Kod:
$ethtool eth1
Settings for eth1:
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: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 10Mb/s
Duplex: Full
Auto-negotiation: off
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
MDI-X: Unknown
netlink error: Operation not permitted
Current message level: 0x00000037 (55)
drv probe link ifdown ifup
Link detected: yes
Test na prędkości ethernetu 10Mbps
Kod:
$speedtest
Speedtest by Ookla
Server: Systel - Katowice (id = 1721)
ISP: *usunięte
Latency: 3.07 ms (0.72 ms jitter)
Download: 7.49 Mbps (data used: 6.4 MB)
Upload: 4.69 Mbps (data used: 6.0 MB)
Packet Loss: Not available.
Result URL: *usunięte
Zmiana na 100:
Kod:
$sudo ethtool -s eth1 autoneg off speed 100
Podgląd czy speed zmieniło się na 100:
Kod:
$ethtool eth1
Settings for eth1:
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: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 100Mb/s
Duplex: Full
Auto-negotiation: off
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
MDI-X: Unknown
netlink error: Operation not permitted
Current message level: 0x00000037 (55)
drv probe link ifdown ifup
Link detected: yes
Test na prędkości ethernetu 100Mbps
Kod:
$speedtest
Speedtest by Ookla
Server: LiveNet Sp. z o.o. - Tarnowskie Góry (id = 19194)
ISP: *usunięte
Latency: 3.49 ms (0.40 ms jitter)
Download: 40.37 Mbps (data used: 68.9 MB)
Upload: 27.99 Mbps (data used: 14.7 MB)
Packet Loss: 38.0%
Result URL: *usunięte
Powrót do autonegocjacji, co w moim przypadku przestawia prędkość na 1Gbps
Kod:
]$sudo ethtool -s eth1 autoneg on
Sprawdzenie:
Kod:
]$ethtool eth1
Settings for eth1:
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: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Auto-negotiation: on
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
MDI-X: Unknown
netlink error: Operation not permitted
Current message level: 0x00000037 (55)
drv probe link ifdown ifup
Link detected: yes
Test na prędkości eth 1Gbps. Moje łącze do Internetu to jakieś 150Mbps.
Kod:
$speedtest
Speedtest by Ookla
Server: Systel - Katowice (id = 1721)
ISP: *usunięte
Latency: 3.53 ms (0.84 ms jitter)
Download: 115.06 Mbps (data used: 51.9 MB)
Upload: 94.39 Mbps (data used: 74.2 MB)
Packet Loss: 0.0%
Result URL: *usunięte