Hello
I Have problem in network performance ( network speed) after migration network infrastructure from port group to logical switch in VMs has Linux OS (Cent OS Distribution ) in NSX for example Copynig file From/To those VMs have Cent OS is too low .This problem ( Low Speed coping file in network to VMs) just for Cent OS VMs and other VMs has Microsoft OS doesnt have any problem of copying file from network.
Thanks for your help.
Regards,
Ehsan
Which NSX and vSphere version? Which network adapter is used by your VMs (vmxnet3, E1000 or whatever)? How are the VMs connected? And from which source do you copy? Or, more precisely, are any firewalls, edge gateways or DLR in between? Has anything changed at the storage level? What physical bandwidth capacity is available?
Can you show with examples how slow the copy process over the network is? How much throughput do you get with CentOS VMs and how much with Windows VMs?
What happens if you copy a file from CentOS VM 1 to CentOS VM 2 and both VMs are on the same logical switch?
Can you rule out that there is a limit on the physical network or that the problem only occurs on one ESXi host? Are there configuration differences between the logical switches for Windows or CentOS? Or do you use the same logical switch for all VMs in your test?
To help you, we need to understand exactly what your setup looks like. So the more information you give us, the more likely we are able to help you. 😉
Hello
Regards
Ehsan
Eshan,
You have connected it to some logical network and a vDS portgroup? Normally you should have only logical switches on your DLR and communication with other networks should go through an Edge gateway.
Other than that you should also check the following:
1. Is your Centos VM having multiple interfaces? Is routing enabled?
2. Is performance bad when using both TCP and UDP?
Poor TCP performance might occur in Linux virtual machines with LRO enabled (1027511)
3. Are your problems related to IPv6?
System using vmxnet3 NICs discards some IPv6 traffic and performance is poor
Lars