2 Hyper-V host (win2k12 stanard), VMs are unable to contact other VMS and Host

I configured 2 host with Hyper-V Manager , Host 1 (192.168.1.20) - VM1 (192.168.1.8) & VM2  (192.168.1.9) and Host 2 (192.168.1.100) - Vm3 (192.168.1.101) & Vm4 (192.168.1.104), and my computer 192.168.1.80 and gatway 192.168.1.1. Now Vm1 is able ping to their host & other VM hosted on same host and other computers and gateway n vice versa, but unable to ping other host 192.168.1.100 and thier vm and vice versa. please let me possible solution.