An administrator has a FlexPod solution with VMware vSphere. The administrator is migrating all network traffic from standard switches to vSphere distributed switches. Virtual machines (VMs) are currently using VM port groups called VLAN_500 and VLAN_501 on standard virtual switch vSwitch3. A new distributed switch called dvSwitch_VM is created and new distributed port groups are configured for each VM traffic VLAN. VMs are configured to use the new port groups. After the change, VMs on VLAN 501 report a loss of network connectivity; however, VMs on VLAN 500 are not showing any connectivity issues. The symptoms are experienced for VMs on all ESXi hosts.
Which action must the administrator perform to solve the problem?