Hi Everybody.

My ogzanition using Exchange 2010 SP2 , we have 6 mailbox with DAG (2 database copies ) config. Each mailbox have 2 network card 1Gbps, and i config as bellow:

Network Card 1 MAPI

-          - IP: 10.1.2.x

-        -   Subnet mark: 255.255.255.0

-        -   Default Gateway: 10.1.2.1

Netword card 2 Replicate:

-          - IP: 10.1.2.y

-          - Subnet mard: 255.255.255.0

-          - Default Gateway: Not config

-          - Clear the Register this connections addresses in DNS check box

-          - All 6 Replicate card under one VLAN  individual with MAPI VLAN.

Config networ adapter following table

Network	Client for MS Networks	QoS Packet Scheduler	File & Print Sharing	IPv6	IPv4	Link-Layer Mapper I/O Driver	Link Layer Responder
MAPI	Enabled	Optional	Enabled	Enabled	Enabled	Enabled	Enabled
Replication	Disabled	Optional	Disabled	Enabled	Enabled	Enabled	Enabled

Problem: When mailbox database replicate I saw any traffic through MAPI card not tranfer to Replicate card.

Please help my investigate mistake and reslove problem :(. Thanks !!!

Enter this:

Get-DatabaseAvailabilityGroupNetwork

Identify the name of the MAPI network.  Let's say for the following command it's "MAPI Network".  Enter the following command:

Set-DatabaseAvailabilityGroupNetwork -Identity "MAPI Network" -ReplicationEnabled:$false

Note that saying -ReplicationEnabled:$false doesn't forbid use of the network for replication.  It will be used if the remaining replication network is not available for some reason.  Maybe the parameter should have been named "ReplicationPreferred".

Thanks, I tried to reconfig replicate card to another subnet and disable replicate on DAG network 01.

And now it replicated correctly :)

Many Thanks again 

• Edited by maxmta Thursday, September 03, 2015 3:22 AM

You're welcome. Happy to have helped!