So our network has been running as is for several years without any problems until I tried to install a new switch the other day. So the other day I configured a new Cisco 2960x then added it to the network. When I first added the switch I had made a mistake and there was a IP conflict so I changed the IP and all was well, so I thought. The next morning I noticed that my VMWARE cluster was giving me an error for not being able to reach it's isolation address. I know it uses the default firewall/gateway(ICMP is allowed) so I tried to ping from the ESXi server but I was not able to . I then tried to ping from my system and I was able to ping the gateway. All of these systems are not the same network but different switches so I tried another system on my switch and I could not ping. I also tried from all of the switches with no luck.
So at this point I am unable to ping the gateway from anything but my system and the only difference is I am using a static address but so are the switches. The strange part is I would have never noticed this if it wasn't for VMWARE as everything is working normally and traffic is being routed through the firewall/gateway. I looked at the ARP tables on the systems and switches and the MAC is correct on all for the gateway. I also did a scan for duplicate address but none were found. I even rebooted the switches with no luck so I am a loss at the moment. I am not a network engineer but I get to play one at work from time to time so any help is appreciated.