Hi,
i bought a new mini-pc with 4 NICs. I want to use one NIC for WAN and 3 NICs for the same LAN. Is it possible to configure 3 NICs for one LAN in any way?
Multiple interfaces on the same subnet is generally an unsupported configuration. But if you have a managed switch, it’s likely possible to aggregate those NICs together, and configure your switch correspondingly. Though really, the better solution is to just use a single, faster (e.g., 10 GbE) NIC.
Maybe this can help, but i did not have tested it out in nethserver.
Actually i only did this (or something like this) in a Microsoft enviroment.
Thats a pitty. My plan was to save a network switch. Maybe I should use pfsense as firewall than and a Nethserver behind it.
Ah, then you want a bridge. Yes, CentOS will let you configure that too–but whether NS will overwrite it I don’t know.
Remember back in the day when E-smith/SME Server by default came with the ‘NIC Bonding option’?
Bridges are supported:
https://docs.nethserver.org/en/v7/base_system2.html#logical-interfaces
@Takato you have to add a logical interface, role green, type bridge, assign the 3 ethernet cards and IP address. That’s all.
I can’t tell from the original question Anyway, multiple NIC’s on same LAN (Green) is not supported by default I believe.
I tried it with a Bridge Lan in the first place but than i got only a connection on one of the LAN Ports. I bridge ens34 40 and 41 but the only Port that is working is ens40
Andy_Wismer:
misusing a Server as a Switch…
My plan is to use one VM as a Router/Firewall and an other VM for Nextcloud and co. But that seems to be not possible…
Show the output of brctl <name_of_the bridge>
.
Also ethtool ensXX
for every interface.
Settings for ens34:
Supported ports: [ TP ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Supports Wake-on: uag
Wake-on: d
Link detected: yes
Settings for ens40:
Supported ports: [ TP ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Supports Wake-on: uag
Wake-on: d
Link detected: yes
Settings for ens41:
Supported ports: [ TP ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Supports Wake-on: uag
Wake-on: d
Link detected: yes
brctl show
bridge name bridge id STP enabled interfaces
br0 8000.000c290a3001 no ens34
ens40
ens41
The bridge is configured correctly. We don’t have enough details to investigate further.