Edge cluster The VMware NSX-T Data Center solution for VxBlock Systems includes two edge clusters. Optionally, deploy additional edge VM requirements after initial system deployment. All VMware supported configurations are allowed provided they do not interfere with operation of the original design. The physical edge nodes have sufficient resources to allow an additional large edge node or several small or medium edge nodes per host. Ensure that each of the hosts in the cluster has some reserve capacity. That way, maintenance and recovery operations can be completed as needed with no warnings or errors appearing in the VMware vCenter Server UI. Parent topic Edge ECMP topologyIn VMware NSX-T Data Center for VxBlock Systems, ECMP provides load-balancing across multiple paths northbound from the T0s to the Cisco Nexus 9000 Series ToR switches. VMware NSX-T Data Center supports a maximum of eight paths per edge node cluster.