I would like to ping one vmware guest from another one. Both are Windows XP and use NAT. I set IP manually for VMnet8 to 192.168.18.1. (no using Obtain IP address automatically)
Check the firewall on all the windows system. If it's enabled,
disable it.
If you still are unable to ping, Open the virtual network editor and
check if you are using the same VMnet adapter for both the VM's,
this adapter should be present in the host machine's network
adapters as well. Share a screenshot of what you are seeing in the
virtual network editor.