I'm facing the issue of not being able to achieve 1 Gbps transmission speed in the network.
This is my network setup, its s Partially Nested Setup (I'm aware its not supported by VMware, this is in a home lab).
The physical disks are 7200 RPM HDD 1TB, NIC ports on Dell and the Physical Switch are all 1 Gbps, the LAN cable is CAT5e, only the Laptop interface is 100 Mbps. I also checked the switch interfaces, it has auto detect feature and shows all ports as 1000Mbps except the laptop port which 100Mbps.
The vCenter is running in VMware Workstation and has the Nested ESXi added to its SDDC.
I'm backing up VM running in the Nested ESXi (stored in the StarWind NAS & SAN) to Veeam Server storage and the issue is that Backup speed never goes above 6Mbps, 1 Gbps throughput should give at the very least ~75 to ~90 Mbps.
I ran iPerf between the Veeam Server and the VM running on the Nested ESXi, the throughput still turned out to be 100Mbps and not 1 Gbps.