Hi,
We have our primary Data Centre where we have 2 CAS and 3 Mailbox Servers. We have DAG implemented on our primary Site (Site A)
Site A has subnet of 192.168.0.0
We recently added a new DR Site (Site B). Site B have 1 CAS and 1 Mailbox. Site B have a subnet of 172.1.1.0
Both sites are connected via a VPN Tunnel. Mailbox on Site B has been added in DAG of Site A.
DAG have 2 IPs 192.168.0.32 and 172.1.1.32
We want to make sure that if Site A completely down then Site B work as an active Site. But when Site A down we are unable to ping DAG and Site B is unable to work as active site. Exchange services are completely down.
Site A has AD(Primary Domain Controller) and Site B has ADC(Additional Domain Controller).
One thing which we noticed that if our DAG is active on Mailbox of Site A we are able to ping 192.168.0.32. But we are unable to Ping 172.1.1.32 if both sites are up also. Site A has witness server and Site B has alternate witness server.
We are using Server 2012 Data Centre
Please suggest.
Anees