Cannot access cloudstack vm

[arpanbht]

Yesterday we manage to create a new cloudstack management server setup along with one nfs server and few kvm agent hosts now yesterday when we were creating vm we were able to access the vm console from management server ui, we created a advanced network zone guest cidr range 10.1.1.0/24 and today also we have created a zone with guest cidr 10.1.1.0/24 so today we created the zone and created some vms but we cannot access the vms console from management server ui it cannot reach the console

show this output on firefox browser

what can be cause of this situation. We can still access the vms which we created with the same cidr range zone from yesterday but the zone which is created today is not able to reach the console.

In todays setup we have added guest network along with firewall rules and public ip address but we cannot access the vm console