We are having a problem with a guest dropping network connection intermittently, an i was wondering how to troubleshoot the network issues with the virtual network cards.
Our system is a PowerEdge 2950 running ESXi 5, with the latest VMWare tools installed in the OS. There are 2 different physical NICs going to 2 different switches, for 2 different networks.
Network 1 is 10/100 - 192.168.1.x
Network 2 is 1000 - 10.10.10.x
There are 2 guests installed; a BES server running on Server 2008 std 32bit, and a terminal server running on Server 2008 std x64.
Monitoring from a remote machine on both networks, the terminal server will drop 8 packets on both interfaces, while the BES server will drop nothing on both.
Here is a diagram of my network config in ESXi
I did not see any errors in the host performance logs when measuring, nor did I expect any as the BES server is unaffected, but I did see dropped packets on one of the terminal server guest interfaces.
There are no clues in the Windows event logs as to the cause of the drops, just consequences of them. Performance monitor on the terminal server show packet errors inbound and outbound on both interfaces never go above zero. Seven drops today affecting all terminal users.
Any ideas on how to troubleshoot error on the guest that is using the vmnics?
Thx
Brad