Try setting PC to a fixed 192.168.2.x address and see if 192.168.2.1 is pingable on ports eth2-4
Try setting PC to a fixed 192.168.1.x address and see if 192.168.1.1 is pingable on ports eth1
Try setting PC to a fixed 192.168.2.x address and see if 192.168.2.1 is pingable on ports eth2-4
Try setting PC to a fixed 192.168.1.x address and see if 192.168.1.1 is pingable on ports eth1