Planning for Exchange 2013 DR. I have some queries on configuring DAG in my DR site.

Current setup:- 

Primary site:- (2MB,2 CAS)

DR Planning:-

One Mailbox,One CAS Server

In primary mailbox server, two nic card is there. One is for MAPI and other one is for DAG replication. In DAG replication NIC card there is no gateway. Primary site DAG working without any issues. In DR mailbox server two nic is there(One for Mapi and other for DAG replication). Problem iam facing is Primary site DAG NIC card not able to communicate with DR MBX server, since there is no gateway in replication NIC card. If I add the gateway in replication NIC, then it is communicating with DR MBX. But iam getting mutiple gateways warning message.

MY Query is:-

1) Is there any problem having multiple gateways in MBX server.

2) If there is no problem with multiple gateway, how to restrict the users traffic hitting DAG replication NIC card.

3) Is there any configuration required in failover cluster manger menu for DR.

4) Is there any way to check DAG(replication) traffic hitting which NIC card..

Thanks for your support...

• Edited by vino1985 Thursday, March 19, 2015 4:49 PM correction

Hi vino,

Thank you for your question.

Replication networks typically do not have default gateways, and if the MAPI network has a default gateway, then no other networks should have default gateways. Routing of network traffic on a Replication network can be configured by using persistent, static routes to the corresponding network on other DAG members using gateway addresses that have the ability to route between the Replication networks. All other traffic not matching this route will be handled by the default gateway that's configured on the adapter for the MAPI network.

So we should check configuration which is DAG cross site, we could refer to the following link:

https://social.technet.microsoft.com/Forums/exchange/en-US/bc260c97-a5aa-484d-bc8a-e7660ef4554f/setup-exchange-2010-dag-across-sites?forum=exchange2010

Issue 1: NO

Issue 2: In a general, user network was separated with replication network.

Issue 3:NO

Issue 4:it is pre-defined by yourselves, we could defined which NIC is charged for replication.

If there are any questions regarding this issue, please be free to let me know. 

Best Regard,

Jim

Thank your for all your response.

I added route using netsh command for my replication nic.

Its working fine...