My servers are losing connectivity. I have 4 servers in the network, two of them are Proliant ML 350 G6 servers and they are losing connectivity with each other. One is the domain controller, one is the Exchange server. They both have HP NC326i PCIe Dual Port Gigabit Server Adapters. The driver version on the NICs is 16.4.0.1 from 10/16/2013. The adapters are not teamed because I get an error each time I try to team them. The NICs are configured for 1000 Mb Full Duplex on the server and Auto Negotiation on the switch. On the switch I see Packets with Errors on the interface where these two servers are connected. These are the only two interfaces on the switch reporting Packets with Errors. Both servers are running Windows Server 2008 R2, fully updated.
The Exchange server will lose its rights to Active Directory on the AD server causing problems with Exchange services. The SACL rights are displayed in the Application log in event viewer, eventid 2080. The SACL rights to the domain controller will just drop and I can not find what is happening that makes them drop.
My questions are: 1. How should the speed & duplex be configured on the server and on the switch?
What could be causing the Packets with Errors on the switch?
What could be causing the loss of SACL rights to the domain controller?
Any help would be greatly appreciated.
Thank you
