Hi All,
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.
Connecting to host 10.10.60.68, port 5201
[ 4] local 10.10.20.6 port 57241 connected to 10.10.60.68 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.01 sec 11.4 MBytes 94.5 Mbits/sec
[ 4] 1.01-2.01 sec 14.6 MBytes 123 Mbits/sec
[ 4] 2.01-3.00 sec 13.1 MBytes 111 Mbits/sec
[ 4] 3.00-4.01 sec 11.8 MBytes 98.2 Mbits/sec
[ 4] 4.01-5.00 sec 11.0 MBytes 92.8 Mbits/sec
[ 4] 5.00-6.00 sec 11.1 MBytes 92.9 Mbits/sec
[ 4] 6.00-7.01 sec 11.0 MBytes 92.2 Mbits/sec
[ 4] 7.01-8.01 sec 10.9 MBytes 90.6 Mbits/sec
[ 4] 8.01-9.01 sec 10.0 MBytes 83.7 Mbits/sec
[ 4] 9.01-10.01 sec 10.4 MBytes 87.8 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.01 sec 115 MBytes 96.6 Mbits/sec sender
[ 4] 0.00-10.01 sec 115 MBytes 96.5 Mbits/sec receiver
I ran tcpdump on the laptop interface (100Mbps) interface just to see if any traffic traverses it during iPerf test, but there was no traffic.
At this point I'm not sure what is causing the traffic to traverse at 100 Mbps, any thoughts ?
Thank You