Question about NIC direct connection between servers
Hi guys, I'm facing some problems about network interfaces setup, here is the detail:
I'm now building a small cluster with three nodes (debian 9), let's call them ServerA ServerB ServerC.
Each server have three physical network interfaces, let's call them NIC1 NIC2 NIC3. In these interfaces, NIC1/NIC2 are 10G ports and NIC3 is 1G port.
NIC3 of each server is connected to a 1G speed switch.
In order to have a higher speed for internal connection, I initially connect A1-B1 and A2-C1, it works fine with at a 10Gb speed. But the connection between ServerB and ServerC is depend on ServerA. So I connected B2-C2 then the network became unstable.
I know there is a loop problem for that so I bonded the A1-B1 and A2-C1 with a active-backup mode, I thought it can solve that problem, but not.
So is there a better way to solve this? Something like stp software?