[SOLVED] How to configure guest only high-speed networking between two hosts?

[pecet]

Hello.
This is newbie question.
I want to configure relatively fast (2.5 or 10 Gbps) guest only networking between two VMs.
How to do so? Is it even possible without physical networking device?
When I try to add networking card to VM I only see devices which are capable of 1GBps.

Thanks

 

[pecet]

Ok, I just followed this guide I found:
https://blog.jenningsga.com/private-network-with-proxmox/

Added new parametrized network to those VMs with added interface (see in link above)

Then I've done this (where ens19 is network interface)
sudo ip ad add 10.10.10.1/24 dev ens19 (VM 1)
sudo ip ad add 10.10.10.2/24 dev ens19 (VM 2)

sudo ip link set ens19 up (on both VMs)

installed iperf and then
iperf -s (VM 1)
iperf -c 10.10.10.1 (VM2)

and confirmed it is working fine:

------------------------------------------------------------
Client connecting to 10.10.10.1, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 1] local 10.10.10.2 port 41212 connected with 10.10.10.1 port 5001 (icwnd/mss/irtt=14/1448/593)
[ ID] Interval Transfer Bandwidth
[ 1] 0.0000-10.0160 sec 74.8 GBytes 64.1 Gbits/sec

 

[_gabriel]

out of curiosity, what is the host cpu ?

 

[pecet]

12th Gen Intel(R) Core(TM) i7-12700H, It is NUC 12 from Intel with ARC 770M (which I managed to use in VM thankfully)