[ceph-users] Create a back network?

Dear Ceph users, I have a question about the benefits of creating a back network for my cluster. Currently, my machines are all connected to a gigabit switch, each with 2 bonded interfaces. The cluster just have a front network. Recently I got a new gigabit switch, so now I have 2 and I was wondering if there would be any benefit in setting up a back network on one switch and a front network on the other, using one interface per network. In this way I'll loose the redundancy, but other benefits and drawbacks are not clear to me. Would some expert help me in better understanding this issue, please? Thanks in advance, Nicola