Hi there experts. I will try to describe this the best I can ... this setup is actually tested and working but what I am not sure about is whether its recommended and normal. Or that it might cause network issues now or in the future. We have a third party product which essentially is another completely separate physical network from ours. They have there own custom network switches. We are trying to setup redundant links between our network and the third party. The third party network is not manageable so no configuration is possible. We were advised to just enable Spanning Tree on our switches and plug in 2 ports from the same VLAN and it would work. Sure enough it does. However from my very basic knowledge of networking this seems wrong. It seems to be creating a loop?