Validating cluster network failed

Question

Hi Team,
I am trying to create a cluster network for Exchange replication on two different subnets. The MAPI network on 192.168.100.0/24 and 192.168.228.0/24 and the Replication network. on 192.168.141.0/24 and 192.168.142/24. Both Exchange servers run on Hyper-V VM without VLAN identification enabled on the NICs.

However, validating the cluster network shows failure on the :

Success ex201601.domain.local - Production 192.168.100.51 Ex201602s.domain.local - Production 192.168.228.99 same cluster network False packet loss 0
Failure ex201601.domain.local - Production 192.168.100.51 Ex201602.domain.local - Replication 192.168.142.2 same cluster network False packet loss 100
Failure ex201601.domain.local - Replication 192.168.141.2 Ex201602.domain.local - Production 192.168.228.99 same cluster network False packet loss 100
Failure ex201601.domain.local - Replication 192.168.141.2 Ex201602.domain.local - Replication 192.168.142.2 same cluster network False packet loss 100

I have tried following this guide https://social.technet.microsoft.com/wiki/contents/articles/28362.best-practices-for-installing-exchange-servers-across-different-subnetssites.aspx
but running "netsh interface ip add route (Example IP)10.3.0.0/ 24 “replication 1” 10.4.0.2" gives me an error. However, "route add 192.168.141.0 mask 255.255.255.0 192.168.142.1 -p" works and I have run "route add 192.168.141.0 mask 255.255.255.0 192.168.142.1 -p" and "route add 192.168.142.0 mask 255.255.255.0 192.168.141.1 -p" on each VM to no avail.

When I run "Get-DatabaseAvailabilityGroupNetwork -Identity DAG1" I get:

RunspaceId : 19d1c8b8-36cc-43e2-be5b-d4795a33a661
Name : MapiDagNetwork01
Description :
Subnets : {{192.168.100.0/24,Up}, {192.168.228.0/24,Up}}
Interfaces : {{Ex201601,Up,192.168.100.51}, {Ex201602,Up,192.168.228.99}}
MapiAccessEnabled : True
ReplicationEnabled : False
IgnoreNetwork : False
Identity : Exdag01\MapiDagNetwork01
IsValid : True
ObjectState : New

RunspaceId : 19d1c8b8-36cc-43e2-be5b-d4795a33a661
Name : ReplicationDagNetwork01
Description :
Subnets : {{192.168.141.0/24,Up}, {192.168.142.0/24,Up}}
Interfaces : {{Ex201601,Up,192.168.141.2}, {Ex201602,Up,192.168.142.2}}
MapiAccessEnabled : False
ReplicationEnabled : True
IgnoreNetwork : False
Identity : Exdag01\ReplicationDagNetwork01
IsValid : True
ObjectState : New

Can you advise? What am I doing wrong?

Best regards,
Kristian

Answer 1

Hi,
You can read the following articles and see if it could help at your side.
https://practical365.com/exchange-server/misconfigured-subnets-exchange-2013-dag-network/
https://exchangemaster.wordpress.com/2013/05/16/quick-exchange-2013-dag-setup-guide/

Thanks for your time!
Best Regards,
Mico Mi

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