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exchange 2010 dag

We've set up a dag with 2 servers. it's working fine but would like to set up replication on the second network adapter. currently the replication nics which are on a separate subnet and showing unreachable. I read that i have to put a static route in to the allow traffic between the replication networks.

I saw on the microsoft article; http://technet.microsoft.com/en-us/library/dd638129.aspx where they specify

Route add 10.0.2.0 mask 255.255.0.0 10.0.1.254 -p

Where do they get the ip 10.0.1.254??? I have 2 separate subnets, one for my mapi network which is 10.100.0.0/22 which goes

through a router etc that is on that subnet. and then i have my replication network which i've just pretty much pulled out of thin

air. i don't understand how the replication network is suppose to communicate with each other.

I've read" http://www.shudnow.net/2009/10/29/exchange-2010-rtm-dag-using-server-2008-r2-%E2%80%93-part-1/ which was helpful

but doesn't mention anything about static routes. It really seems that dags are very poorly documented. if i ever get

this darn thing working, i am going to jump for joy and may write something myself.

Anyway, i would really appreciate any help or suggestions. thanks so much.

Antonio Vargas

First thing first. you need to configure a static IP address on both second nics of the DAG servers and be sure that you can ping then, from one server to another, on that ip's. The static route only applies because you cannot have two default gateways on the same server, and if the second NIC IP's on the DAG servers are on different subnets, you may need to create that route. So be sure that you create a route if you need and be sure that they can ping each other.
Second you need to go to the EMC->organization->mailbox->database avaiability groups and select each of the two servers. than you go to the dag networks on each server, and for the MAPI network you disable replication, leaving replication enabled on the replication netowork (you must see the two networks there). That should do the trick. When you have only one network and it's enabled for replication, DAG servers will use that network both to MAPI and replicate.
hope it helps

techlinden

ASKER

I think i have to create a separate vlan for the replication network, don't i? otherwise the replication network will not be able to communicate with each other, correct?

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Antonio Vargas

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mukulag

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techlinden

ASKER

then i think that answers my question. the current configuration is one exchange server in a data center in Houston; one exchange server in an office in new york. 2 offices are connected via a cogent 100 m circuit. there is a vlan that connects the 2 offices and 2 subnets (the mapi network) together. So it sounds like i do have to create a second vlan for my replication network.

mnevoso

how can i tell if my replication networks are replicating? i did the static routes as suggested. here is output for the following command Get-MailboxDatabaseCopyStatus MDB02 -ConnectionStatus | fl name, outgoingconnections,incomminglogcopyingnetwork

[PS] C:\Users\administrator.AFR\Desktop>Get-MailboxDatabaseCopyStatus MDB02 -ConnectionStatus | fl name, outgoingconnect
ions,incomminglogcopyingnetwork

Name : MDB02\EXCHANGE02
OutgoingConnections :

Name : MDB02\EXCHANGE01
OutgoingConnections : {{EXCHANGE02,MAPI}}

[PS] C:\Users\administrator.AFR\Desktop>Get-MailboxDatabaseCopyStatus MDB01 -ConnectionStatus | fl name, outgoingconnect
ions,incomminglogcopyingnetwork

Name : MDB01\EXCHANGE02
OutgoingConnections :

Name : MDB01\EXCHANGE01
OutgoingConnections : {{EXCHANGE02,MAPI}}

mnevoso

2 physical sites now also and i was able to get dag networks to work i believe as long as that output is correct.