I am unable to set speed of a switch. I could see that the supported modes of port is 10000
cumulus@cumulus:~$ sudo ethtool xxx
Settings for swp8s3:
Supported ports: [ FIBRE ]
Supported link modes: 10000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 10000Mb/s
Duplex: Full
Port: FIBRE
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
Link detected: yes
When I try to execute the command
ethtool -s swp8s2 speed 1000 duplex full
it throws error,
Cannot set new settings: Operation not supported
not setting speed
not setting duplex
Is it because its not in the "Supported link modes"?