[PVE-User] Serial port crossover

Frank, Petric (Petric) Petric.Frank at alcatel-lucent.com
Tue Sep 29 16:06:09 CEST 2015


thanks for your reply.

I will have a look.

kind regards

From: pve-user [mailto:pve-user-bounces at pve.proxmox.com] On Behalf Of Thomas Lamprecht
Sent: Dienstag, 29. September 2015 14:52
To: PVE User List
Subject: Re: [PVE-User] Serial port crossover

socat should cover that just fine, see `man socat`
something like:

socat /dev/ttyS0,raw,echo=0,crnl /dev/ttyS1,raw,echo=0,crnl
should work.

For reusing/multiplexing ports take a look at my forum entry here:
And especially the project GitHub site: https://github.com/danielinux/ttybus
It may also be helpful.
On 09/29/2015 02:35 PM, Frank, Petric (Petric) wrote:


this may not be exactly be a proxmox problem ...

I have to connect two VM servers via a (virtual) cross-over serial cable. I do not want to use the serial ports of the VM host - i.e. connect the serial interfaces from the VMs to /dev/ttyS(1/2) and use a physical x-over cable at the proxmox host.

I know that I can use the "-serial:..." option to define the serial ports. But how to interconnect two of them.

Is such a thing possible.

If yes, can you give me a hint on how to do it ?

Kind regards



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