Terminology for cluster networks

Hello!
I've already asked the question on cluster communication network here
http://social.technet.microsoft.com/Forums/windowsserver/en-US/2f650bfb-3544-4290-84e0-7138159e4cf2/cluster-heartbeat?forum=winserverfiles
"Q2:
Do all of these three types of cluster communication (including heartbeat) occur via the cluster network configured as in the preceeding screenshot (10.1.1.0) or, for example,
Network Health monitoring (including heartbeats) uses one network while
Intra-Cluster communication uses some other?"
and got the answer, but now I'd like to clearify one more thing: if all types of cluster communication (heartbeat + InterClusterCommunication+CSV) occur via the single network (it's often called "Heartbeat" network) why do some admins designate
two different networks for both Heartbeat and CSV
traffic simultaneously:
http://andreagx.blogspot.ru/2011/12/hyper-v-cluster-network-configuration.html
...while others do NOT designate separate network for the Heartbeat:
http://social.technet.microsoft.com/Forums/windowsserver/en-US/078950b0-b9e8-44a9-9f90-71a67df92cad/nic-assignments-for-2012-hyperv-cluster?forum=winserverClustering
"NIC 1 Management LAN
NIC 2 Cluster Shared Volume
NIC 3 Live Migration
NIC 4 iSCSI /MPIO
NIC 5 iSCSI /MPIO
NIC 6 Virtual Switch - Teamed
NIC 7 Virtual Switch - Teamed
NIC 8 Virtual Switch - Teamed"
So either the terms "Heartbeat network/nic" and
"CSV network/nic" are used interchangeably or I don't understand what
CSV network means...
Thank you in advance,
Michael

Hi Shaon,
Thank you for the reply!
Rather strange... I failed to find any information on msdn regarding separate CSV and Heartbeat traffic... The MSCA 2012 guide says there should be only ONE network adapter dedicated for inter-cluster communication:
And I don't understand what option should I choose to dedicate a Nic for CSV OR Heratbeat only - as far as I see there's only one option
"Allow cluster network communication on this network" that allows both CSV and heartbeat:
What option allows separation of CSV and Heartbeat? Would you please provide me with a link?
Regards,
Michael

Similar Messages

Cluster network name resource 'Cluster Name' failed registration of one or more associated DNS name(s) for the following reason: The handle is invalid.

I'm stuck here trying to figure this error out.
2003 domain, 2012 hyper v core 3 nodes. (I have two of these hyper V groups, hvclust2012 is the problem group, hvclust2008 is okay)
In Failover Cluster Manager I see these errors, "Cluster network name resource 'Cluster Name' failed registration of one or more associated DNS name(s) for the following reason: The handle is invalid."
I restarted the host node that was listed in having the error then another node starts showing the errors.
I tried to follow this site: http://blog.subvertallmedia.com/2012/12/06/repairing-a-failover-cluster-in-windows-server-2012-live-migration-fails-dns-cluster-name-errors/
Then this error shows up when doing the repair: there was an error repairing the active directory object for 'Cluster Name'
I looked at our domain controller and noticed I don't have access to local users and groups. I can access our other hvclust2008 (both clusters are same version 2012).
<image here>
I came upon this thread: http://social.technet.microsoft.com/Forums/en-US/85fc2ad5-b0c0-41f0-900e-df1db8625445/windows-2012-cluster-resource-name-fails-dns-registration-evt-1196?forum=winserverClustering
Now, I'm stuck on adding a managed service account (mas). I'm not sure if I'm way off track to fix this. Any advice? Thanks in advance!
<image here>

Thanks Elton,
I restarted 3 hosts after applying the hotfix. Then I did the steps below and got stuck on step 5. That is when I get the error (image above). There
was an error repairing the active directory object for 'Cluster Name'. For more data, see 'Information Details'.
To reset the password on the affected name resource, perform the following steps:
From Failover Cluster Manager, locate the name resource.
Right-click on the resource, and click Properties.
On the Policies tab, select If resource fails, do not restart, and then click OK.
Right-click on the resource, click More Actions, and then click Simulate Failure.
When the name resource shows "Failed," right-click on the resource, click More Actions, and then click Repair.
After the name resource is online, right-click on the resource, and then click Properties.
On the Policies tab, select If resource fails, attempt restart on current node, and then click OK.
Thanks

Can I change which nic is used for a cluster network when more than one nic on the node is on same subnet?

This cluster has been up and working for maybe a year and a half the way it is. There are two nodes, running Server 2012. In addition to a couple network interfaces devoted to VM traffic each node has:
Management Interface: 192.168.1.0/24
iSCSI Interface: 192.168.1.0/24
Internal Cluster Interface: 192.168.99.0/24
The iSCSI interfaces have to be on same subnet as management interfaces due to limitations in the shared storage. Basically if I segregate it I wouldn't be able access the shared storage itself for any kind of management or maintenance tasks.
I have restricted the iSCSI traffic to only use the one interface on each cluster node but I noticed that one of the cluster networks is connecting the management interface on one cluster node member with the iSCSI interface on the other cluster node member.
I would like for the cluster network to be using the management interface on both cluster node members so as not to interfere with iSCSI traffic. Can I change this?
Binding order of interfaces is the same on both boxes but maybe I did that after I created the cluster, not sure.

Hi MnM Show,
Tim is correct, if you are using ISCSI Storage and using the network to get to it, it is recommended that the iSCSI Storage fabric have a dedicated and isolated network. This
network should be disabled for Cluster communications so that the network is dedicated to only storage related traffic.
This prevents intra-cluster communication as well as CSV traffic from flowing over same network. During the creation of the Cluster, ISCSI traffic will be detected and the network
will be disabled from Cluster use. This network should set to lowest in the binding order.
The related article:
Configuring Windows Failover Cluster Networks
http://blogs.technet.com/b/askcore/archive/2014/02/20/configuring-windows-failover-cluster-networks.aspx
I’m glad to be of help to you!
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Failover Cluster Network Name Failed and Can't be Repaired

I have an issue that seem to be a different problem than any others have encountered.
I've scoured everything I can find and nothing has fixed my problem.
The problem starts with the common problem of the cluster network name failing on my 2 node server 2012 file server cluster. The computer object was still in AD and appeared to be fine so it was not the common problem of the object
getting deleted somehow. At the time, there was no other object with that name in the recycling bin, so I don't think it was mistakenly deleted and quickly recreated to cover any tracks, so to speak.
Following one guide, I tried to find the registry key that corresponded with the GUID of the object, but neither node in the cluster had it in its registry (which may be part of the problem).
Since it was in the failed state, I tried to do the repair on the object to no avail.
We run a "locked down" DC environment so all computer objects have to be pre-provisioned. They were all pre-provisioned successfully and successfully assigned during cluster creation. The cluster was running with no issues for a month
or so before this problem came up.
When I do a repair on the object while taking diagnostic logs the following 4609 error appears:
The action 'Repair' did not complete. - System.ApplicationException: An error occurred resetting the password for 'Cluster Name'. ---> System.ComponentModel.Win32Exception: Unknown error (0x80005000)
There appears to be a corresponding 4771 error with a failure code 0x18 that comes from the security log of the DC that states there was a Kerberos pre-authentication failure for the cluster network name object (Domain\Clustername$)
I believe this is what is causing the repair failure. All the information I found related to security error 4771 was either a bad credentials given for a user account or the fix was to reconnect the computer to the domain. I can't seem to find
a way to do this with the cluster network name. If there's a way please let me know.
I've tried a number of things, like resetting the object, disabling it, deleting and creating a new object with the same name, deleting that new object and recovering the original, etc...
Can anyone shed some light on what is going on and hopefully how to fix it other than rebuilding the cluster? I'm quite close to just tearing it down and building it back up but am hesitant because this cluster in currently in production...
Any help would be appreciated

Hi,
I don’t find out the similar issue with yours, base on my experience, the 4096 error
often caused by the CSV disk issue, and the 0x80005000 error some time caused by the repetitive computer object in OU. Please check the above related part or run the validate test then post the error information.
Although I do have a CSV, there doesn't seem to be any problems with it and it was running just fine for a month or so before the problem started. I double checked and there is no duplicate computer objects, maybe I don't understand what you mean by
repetitive, could you explain further?
The cluster validates successfully with a few warnings:
Validating cluster resource Name: DT-FileCluster.
This resource is marked with a state of 'Failed' instead of
'Online'. This failed state indicates that the resource had a problem either
coming online or had a failure while it was online. The event logs and cluster
logs may have information that is helpful in identifying the cause of the
failure.
- This is because the cluster name is in the failed state
Validating the service principal names for Name:
DT-FileCluster.
The network name Name: DT-FileCluster does not have a valid
value for the read-only property 'ObjectGUID'. To validate the service principal
name the read-only private property 'ObjectGuid' must have a valid value. To
correct this issue make sure that the network name has been brought online at
least once. If this does not correct this issue you will need to delete the
network name and re-create it.
- This is definitely related to the problem and the GUID probably got removed when we attempted a fix by resetting the object and trying the repair from the failover cluster manager.
The user running validate, does not have permissions to create
computer objects in the 'ad.unlv.edu' domain.
- This is correct, we run a restricted domain. I have a delegated OU that I can pre-provision accounts in. The account was pro-provisioned successfully and was at one point setup and working just fine.
There are no other errors nor warnings.

Cluster Network name resource could not be updated in domain

Hi,
I have the following error and need clarification on the below solution in bold:
Event Id 1206 -
The computer object associated with the cluster network name resource 'Cluster Name' could not be updated in domain 'xxxxx.xxxx'. The error code was 'Password change'. The cluster identity 'ClusterGroup1$' may lack permissions required to update the object.
1 - Move CNO back to the Computers Container
2- Give the Cluster Node Computer Accounts Change Password permission on the CNO
3 - Take the Cluster Name Resource offline
4 - Repair Cluster Name Resource
5 - Bring Cluster Name Resource back online
Firstly, is there any implication?
Secondly if ClusterGroup1$ is my CNO (Cluster Name Object) then is my
cluster node computer account the server nodes in the cluster? E.g. ClusterGroup1$ is the cluster, the nodes are hyperv01 and hyperv02, do I add hyperv01 and hyperv02 to clustergroup1 -- properties -- security?
Thank you.

Hi SPD IT,
If you have pre-stage your cluster object to a specific OU, you needn’t move them to default computer OU, with your current error information it most possible caused by the
lack permission of cluster nodes or some unless GPO applied to cluster nodes, please exclude the cluster from any GPO, then test this issue.
If it does not work please follow this repair action then monitor this issue:
1. Open Failover Cluster manager
2. Select Clustername
3. Under Cluster Core Resources right click on Cluster Name and select Take offline
4. Right click on Cluster Name and select repair.
I’m glad to be of help to you!
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are trying to better understand customer views on social support experience, so your participation in this
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Server 2008 R2 Failover cluster network configuration

Hi
We have a customer with a Server 2008 R2 Hyper-V failover cluster. They have 2 cluster networks, "Cluster Network 1" and "Cluster Network 2".
"Cluster Network 1": NIC team on 172.16.1.0/24 for private cluster network communication
"Cluster Network 2": NIC team on 192.168.1.0/24 for production network communication
I can see that "Cluster Network 1" is configured to "Allow cluster network communication on this network" and "Allow clients to connect through this network".
If "Cluster Network 1" is ONLY for communication between the to cluster nodes then I assume the selection in "Allow clients to connect through this network" should be removed?
/Lasse

It will cause a lost network connection for any client that is accessing through that network. Those clients would need to reconnect.
Did you configure both IPs on the cluster resource name that clients are accessing? If you only configured the one you want, there should be no issue. If you configured both, then it is possible some clients might be connected via the private
network.
Another thing you should, and if you have already done this you will most likely not have issues at all, is that you should disable DNS registration on any network you do not want client access coming through. If the clients can only find the resource
through the DNS name registered, that is the way they will be coming in. In my clusters, which often have 7 or more NICs, there is only one with a published DNS record.
. : | : . : | : . tim

Failover Cluster networking issue

Normally when configuring a SQL cluster you put the communication to the shared storage (usually a SAN) on a separate network, and so your config looks something like this (long live ms paint!):
So in this example the 192.168.100.0/28 subnet is used for cluster inter-communication (heartbeat) and for access to the shared storage. Access to the shared storage is kept completely isolated from the corporate network and everyone's happy.
On the corporate network side the cluster registers itself onto DNS on the 10.0.0.0/24 subnet and clients can resolver the cluster name and connect to it.
My configuration is slightly different though and I am having some problems with the networking side.
In my configuration my shared storage is a file server cluster with two nodes. So the "clients" of the file server cluster are the SQL servers themselves. As such, the network configuration should, as I see it, be something like this:
In this setup the SQL servers would still connect to the shared storage on a separate subnet, as per best practices, therefore keeping the cluster traffic separate from the corporate subnet.
However, for this to work the file server cluster IP address needs to be on the 192.168.100.0/28 subnet, and still be able to register on the DNS server on 10.0.0.0/24 subnet. Now this already involves setting up a lot more things than you would normally
on the cluster NICs, it is no longer just an IP address and a subnet mask, now you need a DNS server and a gateway, as well as ensuring that the DNS server is contactable from clients on the 192.168.100.0/28 subnet, meaning complete isolation is gone.
I can't find any best practices on how to get this done, and I don't think that the solution is to put this on a the cluster communication on the corporate network, nor to create a DNS server on the 192.168.100.0/28 subnet, so does someone have any ideas
how to get this done or how to improve the design of the setup?

Hi cogumel0,
In your case personal advice is you can add the additional NICs on SOFS computers and SQL cluster then make all this NIC at a same separate subnet such as 192.168.101.0/24,
disable the default settings with new added NICs: DNS register AND NetBios over TCPIP, then create a static DNS A record point to the new added NICs IP address.
Since the SQL on SMB storage only support the UNC path, we need create a another CAP On SOFS cluster (192.168.101.0/24 subnet CAP), after that we can create a static DNS A record
for this CAP and configure the SQL cluster access this CAP only.
The related information:
Install SQL Server with SMB Fileshare as a Storage Option
https://msdn.microsoft.com/en-us/library/hh759341.aspx?f=255&MSPPError=-2147217396
Using Multiple Client Access Points (CAP) in a Windows Server 2008 (R2) Failover Cluster
http://blogs.technet.com/b/askcore/archive/2010/08/24/using-multiple-client-access-points-cap-in-a-windows-server-2008-r2-failover-cluster.aspx
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Cluster Network Randomly Failing on Hyper-V Cluster

Please let me know if there is a more appropriate forum. I am having a really strange issue that is seemingly random. I have a 3 host cluster that are all identical hardware and running Hyper-V Server 2012 R2. The networking is as follows and each network
is a different VLAN/Subnet:
3 Cluster networks for virtual machines
1 Cluster network for cluster traffic/management
1 Heartbeat network
2 iSCSI networks for storage
All of the networks are perfectly fine except for one which seems to fail on a random node at a random time during the day (so far, a maximum of once per day).
If I start to live migrate virtual machines that are on the failed network, the cluster network comes back up. The cluster networks are teamed using SCVMM and they are switch independent and running the Dynamic teaming algorithm. We have tried changing the
network switches to see if it was faulty network hardware and things ran fine for one day and then just happened again today so we've ruled that out. The only error message I get is 1127 which is the error stating that the cluster network has gone into a failed
state which doesn't help much. I've run the cluster validation tool for networking several times and it always passes 100%. What I am worried about is hardware incompatibilities as I am using Dell servers (PowerEdge R720) that have Broadcom NIC's in them.
We have 12 Ethernet ports in each server and they are all identical hardware. Four of them are integrated Broadcom, another four that are from a Broadcom quad add-on NIC, and another 4 that are from an Intel quad add-on NIC. All are server grade NIC's. The
only problem I've had in the past is with VMQ which we've had to disable as a workaround but that has always stabilized our virtual networks. In any case all of the cluster networks for virtual machines are set up identically and only this particular one randomly
fails on any one of the three hosts (it has happened at least once on each node now).
I am wondering if anyone has had this experience before. I have read that there are some nasty compatibility issues between Broadcom and Hyper-V but I am wondering if someone could give me some ideas to find out how to narrow this down since the event
logs don't seem to be speaking in obvious terms to me.
Please let me know if you have any suggestions on how to narrow down what's causing this or if there is more information that I could provide. In the meantime, I'm going to try and take note of which virtual machines are running on the host that has the
network fail just in case there's some correlation there but that could take a while to accrue any useful data and our users aren't too happy with the instability...
Thank you in advance for your time and sorry for the lengthy post!

Since I made the change last Friday evening, 4/10, I haven't experienced the issue. I won't be completely convinced that this resolved it until I monitor for at least one more week since it didn't actually present itself for the first time until I was already
one week into live deployment. Also, this link below is much more eloquent than how I put it and describes my issue exactly. Coupled with the KB article that someone posted within this comments section (the same that I posted earlier here) of the article,
this is what led me to check the VMQ status through PowerShell which is much better than going through the registry to do it (I'm running Hyper-V Server 2012 R2 which is like core so I don't have the GUI options shown in the article).
http://alexappleton.net/post/77116755157/hyper-v-virtual-machines-losing-network
I could try updating the driver but there is mention in the comments of this post that driver updates have yet to resolve this issue so we may still be waiting on Broadcom for a fix. Please confirm otherwise if anyone has any information.

Cluster network name resource error 1196

I have a two-node Hyper-V 2012 Core Server cluster. Initially, the cluster was working fine and I was able to do live migrations with no problem. I first realized that something had gone wrong when I was attempting to move a VM's storage to the Cluster Disk.
When I right click on the VM and select Move > Virtual Machine Storage, the bottom left area of the "move storage" screen says "Loading..." forever and never displays the cluster storage. This happened once before and I was able to correct
the issue by taking the Server Name resource offline and doing More Actions > Repair. However, if I try a repair now I receive the following error messages:
"There was an error repairing the active directory object for 'Cluster Name'. Error Code: 0x800713b8. The cluster request is not valid for this object".
I have verified that the cluster name Active Directory object (CCSDCluster) still exists and each node as well as itself has full permissions to the object. What I am not certain of is whether the object is still in the same Organizational Unit as it was
originally. After the failed repair attempt, I am able to bring the Server Name resource back online successfully.
In addition, I am continually receiving cluster event errors indicating the following:
"Cluster network name resource 'Cluster Name' failed registration of one or more associated DNS name(s) for the following reason: The handle is invalid. Ensure that the network adapters associated with dependent IP address resources are configured
with at least one accessible DNS server."
Each of the two nodes has multiple NICs configured. One for management, one for guest OSs (Hyper-V virtual switch is configured to use this NIC and not allow management OS access), and two for iSCSI (for redundancy and multi-path). Live migration is set
to only use the management NICs. The management NIC on both nodes is configured with valid DNS servers. The CCSDCluster DNS entry has full permissions for both nodes and itself.
Any suggestions on what to try would be greatly appreciated. Thank you!

Could my issues be related to a problematic network configuration? Please see the ipconfig below from one of my Hyper-V host servers.
Ethernet adapter Ethernet 8 = iSCSI
Ethernet adapter Ethernet 6 = iSCSI
Ethernet adapter Ethernet 2 = Management interface
10.1.3.19 = Management IP address, 10.1.3.3 = IP address of Cluster Name Object
Tunnel adapter Local Area Connection *11 = ?? Not sure what this one is
Windows IP Configuration
Host Name . . . . . . . . . . . . : CCSDVM01
Primary Dns Suffix . . . . . . . : clairton.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : clairton.local
Ethernet adapter Ethernet 9:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP NC552SFP Dual Port 10GbE Server Adapter #4
Physical Address. . . . . . . . . : 28-92-4A-AF-46-34
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Ethernet 8:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP NC552SFP Dual Port 10GbE Server Adapter #3
Physical Address. . . . . . . . . : 28-92-4A-AF-61-68
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 172.16.1.12(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.16.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Ethernet 7:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP NC552SFP Dual Port 10GbE Server Adapter #2
Physical Address. . . . . . . . . : 28-92-4A-AF-61-6C
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Ethernet 6:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP NC552SFP Dual Port 10GbE Server Adapter
Physical Address. . . . . . . . . : 28-92-4A-AF-46-30
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 172.16.1.11(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.16.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Ethernet 3:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom BCM5709C NetXtreme II GigE (NDIS VBD Client) #55
Physical Address. . . . . . . . . : E4-11-5B-B9-3A-9C
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Ethernet 2:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom BCM5709C NetXtreme II GigE (NDIS VBD Client) #58
Physical Address. . . . . . . . . : E4-11-5B-B9-3A-A2
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.1.3.19(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
IPv4 Address. . . . . . . . . . . : 10.1.3.3(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.1.3.100
DNS Servers . . . . . . . . . . . : 10.1.3.10
10.1.3.39
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 11:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Failover Cluster Virtual Adapter
Physical Address. . . . . . . . . : 02-AD-4B-6D-A9-FB
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 169.254.2.92(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Enabled

DAG 2010 Cluster IP address resource 'Cluster IP Address' cannot be brought online because the cluster network replication

Hello,
DAG Exchange 2010 SP3 RU6 with MAPI network and Replication network. All works correctly.
But, when the DAG member restarts , the cluster goes offline and i can't bring it online.
The message error:
Cluster IP address resource 'Cluster IP Address' cannot be brought online because the cluster network 'Cluster Network 1' is not configured to allow client access.
Cluster Network 1 is the replication network and it is normal that allow client access is unchecked
I already tried to check, apply then uncheck apply. it does anything.
Could you please help me to figure out the issue ?
Best regards

Hi,
Check below link.
http://forums.msexchange.org/Cluster_network_name_is_not_online/m_1800552315/tm.htm
I was able to resolve the issue without taking down any resources.
First, I noticed that the Failover Cluster Manager "Cluster Name" had the IP address of the replication network only..
After going back through the guide @
http://technet.microsoft.com/en-us/library/dd638104.aspx I changed the properties on the NICs for file sharing, etc..I then adjusted windows firewall rules to block traffic from my MAPI network destined for the replication network.
I then removed the IP from the replication network on the DAG leaving only the 1 MAPI network IP.
After an hour or so, I ran Get-DatabaseAvailabilityGroupNetwork and seen that the MAPIAccess property was finally set to true on my MAPI network. I went back to Failover Cluster Manager and my Cluster Core Resource Cluster Name dropped the IP address that was
associated (IP from the replication network) I added a new IP from my Mapi network range, updated the DAG IP in Exchange and the DNS record for the DAG and my cluster resource came online.

Routing and Remote access can cause cluster network issues?

After enabling routing and remote access on the servers, we found lots of cluster issues on our server like<o:p></o:p>
Cluster Service stopped
Communication was lost and reestablished between cluster nodes
Unable to access witness resource
Cluster resource failed
can RRAS enabling causes cluster network issues?
Rahul

Hi TwoR,
Please offer more information about your current cluster and RRAS configuration, such as are you installed the RRAS role on any cluster node? Are your cluster in Hyper-V environment?
Or if you want to create the RRAS cluster you can refer the following KB:
Deploy Remote Access in a Cluster
http://technet.microsoft.com/en-us/library/jj134175.aspx
How to configure Network Load Balancing (NLB) based cluster of VPN Servers
http://blogs.technet.com/b/rrasblog/archive/2009/07/02/configuring-network-load-balancing-nlb-cluster-of-vpn-servers.aspx
I’m glad to be of help to you!
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are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
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The cluster network name is not online

Our cluster is a four node, Windows Server 2012 failover cluster running Hyper-V role only. Today it starts throwing the error 'The cluster network name is not online'. The IP is online (and all the VMs are running) but migrations fail and any
scripts that rely on the name fail. Attempting a More Actions | Repair results in 'The action 'Repair' did not complete. Error code 0x80005000'
The AD object for the cluster still exists. We do not have a disjoint namespace.
I am at a loss and hoping for some insight from the forum.
Thanks

Hi BlakeDuffey,
It seems like the computer object registry keys missing, please first try to runn gpupdate /force command on all nodes and repair again, if it not work please refer the following
article to repair the object registry key..
The related article:
Cluster network name resource 'Cluster Name' cannot be brought online, Unable to get Computer Object using GUID.
http://blogs.technet.com/b/csstwplatform/archive/2010/10/15/cluster-network-name-resource-cluster-name-cannot-be-brought-online-unable-to-get-computer-object-using-guid.aspx
Windows Server 2008 R2: Failover Clustering Troubleshooting Scenarios
https://technet.microsoft.com/en-us/magazine/hh289314.aspx
How to Troubleshoot Create Cluster failures in Windows Server 2012
http://blogs.msdn.com/b/clustering/archive/2012/05/07/10301709.aspx
http://blogs.technet.com/b/askcore/archive/2012/09/25/cno-blog-series-increasing-awareness-around-the-cluster-name-object-cno.aspx
I’m glad to be of help to you!
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Cluster Network communication doesn't go correctly through adapters

Hi!
I have from VMM configured cluster with logical networks for cluster communication, live migration and public network with management. These networks are in team of two physical adapters with converged switch. For each network is created virtual adapter on
every cluster host.
Communication in team goes weird. Communication in using one adapter and communication out using the second adapter. There should be aggregation. Team is LACP and we tried this with Hyper-V Port and Adress Hash - same behavior on both of these
configurations?
Anybody know what to do for aggregated communication?
Thanks

I'd like to push this up to the labview dev folks and ask why could a string outputing version of an enum not be created and functional as a type def. I understand the difference between enums an rings. But I would like to suggest that the powers that be create a data type version for strings similar to the enum which updates all instances of a type def when changes are made to the string content within.
To draw a parallel. An enum pairs the string label with a number and packages the two as part of the type def. Instead could we not pair the string label with a string and again package the two as a type def? You could choose to have the label and string content match or not as needed but the pair would update universally.
Here is one instance where this would be useful. I have been using the Asynchronous Message Communication Library lately which utilizes the standard Labview queue funcitons. While the standard queue functions can accept various data types the AMC library is limited to string messages only and rewriting the entire AMC lib is time prehibitive.
So it would be very convienent to have something that looks like a combo box constant as a type def to feed into the AMC libraries instead of individual string constants. It would significantly reduce errors when repeatedly typing the same sting constants repeatedly only to find them the hard way after hours of debug.

Oracle RAC and crossover cable for private network

Hi,
I have the following configuration: two database servers, each has four network cards, two for public network and two for private, cluster network. Each public card has own IP-address and both have virtual IP-address, defined in operation system (SLES-9) for redundancy. Because I have only two machines in the cluster I want to connect the two machines for private with crossover cable without switch. For redundancy I want to make two connections between machines. Is it at all possible? How should I defined all network interfaces and what should be included in /etc/hosts for properly work of Oracle cluster?
Best Regards,
Jacek

Hi,
You can build a RAC witch CROSSOVER, but the Oracle no homolog.
As you have 4 cards, 2 to public (redundancy) and 2 to interconnect (redundancy) you need of a software to to make a TEAM, and create a card virtual that will have a IP address.
Eder

Sql cluster network

i have got a curious question in regards to sql clustering, what if the client network goes down and the hb network is still up, does it failover and why? kindly assist.

Hello,
There is no such thing as a "heaertbeat" network anymore. You have four choices: Client communications, cluster communications, client and cluster, or none.
Anything marked for cluster communications means the cluster can do internal communications over that interface - which could be things like resource health checking, monitoring, cluster views, etc.
If your "client" network went down, the clients wouldn't be able to connect. You may have some other resources go offline depending on many different settings, and those settings may cause a failover to occur. However, if the failover would occur
there shouldn't be a problem as long as there is a network available for cluster communications.
-Sean
The views, opinions, and posts do not reflect those of my company and are solely my own. No warranty, service, or results are expressed or implied.

Terminology for cluster networks

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