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What is the proper network configuration for Replication on two NIC's

Posted on 2015-02-04
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Last Modified: 2015-06-06
I am working on setting up a Network/Domain where I will have multiple NIC's in each server. I planned to have 1 NIC for management and the others for VM's, Clusters and Live Migrations. I created two servers and joined them to the domain. The NIC was set to 10.16.3.1 network. They can talk and see the domain controllers no problem. But then I added Virtual servers and put them on a different subnet of 192.168.45.1. Then I went and enabled Replication. I was able to find the servers and set it up with each other but then when I tried to actually replicate it fails and says it can't resolve the name of the Hyper-Visor. What is the proper way to configure this so replication will work?
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Question by:aando
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by:Trenton Knew
ID: 40588965
no resolve sounds like a DNS or routing issue.  Are they in the same DNS zone?  pointed at the same DNS server?  Is there a router to route traffic between the two subnets?
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by:aando
ID: 40589114
The Host has a DNS server and is logged into a Domain. The Virtual servers are not on a domain and just have a gateway. That is why I am not sure if the Replication in Hyper-V is using the Host or the Virtual servers to route that traffic.

In the future a lot of the Virtual servers will have their own DNS as well. This is why I am trying to figure out the proper way to set that up.
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Mahesh earned 500 total points
ID: 40589195
Replicating Virtual machines is Hyper-V host responsibility

The replication attempt failed because source Hyper-V host unable to communicate with target Hyper-V host

U need to enable / open Ports (TCP 80 /443 / ICMP) between source and target Hyper-V servers
Probably you may need to put routes on router to enable communication
Also you can put hyper-v server IP for replica

Check below post for step by step setting up replica
http://blogs.technet.com/b/canitpro/archive/2013/04/08/step-by-step-virtual-machine-replication-using-hyper-v-replica.aspx
http://www.virtualizationadmin.com/kbase/VirtualizationTips/ServerVirtualization/MicrosoftHyper-VTips/General/network-ports-used-hyper-v-replica.html
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Author Comment

by:aando
ID: 40627357
It is a DNS issue due to the multiple NICs but I can't figure out how to resolve it.
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Expert Comment

by:Trenton Knew
ID: 40631109
Where are you routing traffic between the two subnets?
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by:Trenton Knew
ID: 40631145
Are we talking about Hyper-V replica here or are we talking some direct replication between the virtual servers?

If you have two virtual switches on the same subnet, does hyper-V support aggregating the virtual switches? (I know vmware can do this).  If you cannot make the two virtual switches on the Hyper-V configuration perform as one single aggregated virtual device, then you will need to route traffic between the two networks.  In this case, I think your virtual servers will need to be on different subnets 192.168.45.1/25 and 192.168.45.128/25 for example. (unless you aren't into Variable subnetting).  you can't route traffic between two networks on the same subnet but separated.
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Author Comment

by:aando
ID: 40652189
I am not following you Trenton Knew. I can ping the IP address and I can ping the name of the Host as well from both sides. But the replication still won't work.

One other thing I didn't mention though and this might be the problem. My Server names are very long. For example the host are name stuff like JSHV-PAI1-0102.bignetwork.com. When I joined them to the domain it said it would shorten it for netbios. So when you find it in Active Directory it is listed as JSHV-PAI1-010 and that is it. So it shaves off the last number. I saw another post that said this could be the problem. How do I fix this?
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