High TCP packet retransmission between Windows VM ?
Posted on 2015-01-21
Can anyone please assist me with some explanation and suggestion of how to fix this issue or even guide me where to troubleshoot further for the High TCP packet retransmission between Windows VM ?
This is detected by the network operations team and it is my current problem that I'm facing with the Terminal Server users in remote sites connecting to the data center.
Here's the envrionment:
VMware ESXi 5.1 update 1 running on HP Blade BL 465c G7/8
User connecting from the remote desktop in various geographical sites, to the Load Balanced virtual IP (managed by Riverbed SteelApp appliance)
Windows Server 2008 R2 SP1 Terminal Servers running Oracle forms application which talks to another VM running Windows Server 2008 R2 SQL Server 2008 R2
The TCP retransmission happens between the two types of VMs above in the different and the same ESXi hosts so it is always happening no matter where the Vm is.
There is no CPU ready or vRAM memory contention or vCPU over provisioned in all ESXi host (all under 1:3 ratios pCPU to vCPU ratio).
Any idea would be greatly appreciated.