VMware snasphot backup is failing with error, ERR - Error opening the snapshot disks using given transport mode: nbd Status 23. We are using NBD,connectivity to vcenter (port 443) and esxi host (port 902) is working and master/media server can ping the esxi kernel network. In the vxms log there are SSL Certificate error .Can someone please help me troubleshoot this error.
Master & Media Servers: NetBackup 8.0 on Windows Server 2012 R2 Standard
ESXi Version: 6.5.0
vCenter Version: 6.5.0
Transport Mode: NBD