I think I fixed the issue I switch span tree mode to mts and for the past hour or so I haven't seen a timeout. 
Hi, Have a strange issue where I cant ping inside the 8024F from another subnet. I have two Dell R820 connected to a PC-8024F and the 8024f is connected to a CISCO 3945-e router. The problem I'm having is (once I start the esxi host or run a SoftPerfect NetworK scan on the ip range 192.168.2.0/24) I lose the ability to ping anything on the 8024F subnet after a few mins. Everything else is working fine (VM in the cluster are fine, they are responding to incomming traffic), I just lose the ability to ping the anything in subnet. This is causing me issues in VCENTER when I try to open up a VM console, I get an error cant connect. But if I run a SoftPerfect NetworK scan on the subnet 192.168.2.0/24 I can connect for a few mins without any problems. I'm at a loss on what the problem is. Please let me know what you think, TY.
PC-8024f & Vmware 6.7 cant ping subnet