[Linux-HA] non-IP Heartbeat over USB?

[Helmut Wollmersdorfer]

Harald Milz wrote:

> has anyone successfully used a USB host-to-host cable with ttyUSB to get a
> non-IP heartbeat? Or via usbnet?

IMHO USB host-to-host allows only IP, or am I wrong? At least I would 
not know how to configure this. IP over USB is no problem. Linux seems 
to use usbnet for IP:
dmesg:
usb0: register usbnet at usb-0000:00:10.1-1, Prolific PL-2301/PL-2302
via1:~# lsusb
[...]
Bus 002 Device 003: ID 067b:0000 Prolific Technology, Inc. PL2301 
USB-USB Bridge


Using two USB-to-serial with a serial crossover cable between should 
work. They work with most serial devices. I use these cheap ones coming 
under the trademark "Ednet" and have prolific chipsets

helmut at xp2400:~$ lsusb
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 003: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial 
Port

Helmut Wollmersdorfer