corosync interface

Hi All, My server has 2x 1Gb and 2x 10Gb network interfaces. I used 2x 1Gb interface (bond) for proxmox ve mgmt. And i plan to use 2x 10Gb interface (bond with VLANs) shared for VMs and DMZ networks. 1. I read cluster uses Corosync Cluster Engine. Does Corosync network creation is mandatory...