We have 3 OfficeConnect 1950 with SFP+. One in a server rack as core switch (firewall, modem, DL380 with xenserver), a second on a remote location and a third in another remote location. We have an optical fibre (OM3) between 1-2 and 1-3, so possibility to make a star, no ring or daisy chain possible.
Can I stack the switches, or only possible to use the 4G optical as backbone? Please provide some documentation that I can read and try to implement.