DPM Dedicated Networking

Hello,
Dose anybody else use a dedicated network for there DPM back up traffic?
I only ask as yesterday we had a Hyper-V environment failure due to (copyied from even viewer) "
Failed to allocate VMQ for NIC +
Maximum number of VMQs supported on the Protocol NIC is exceeded. Status = Insufficient system resources exist to complete the API."
It would appear that the Virtual "Production Switch" was over loaded and caused bad times!!!
Would adding a new Virtual switch (obviously with a separate physical network card in each node) dedicated to backups resolve the problem?
If you have done this could you give me a heads up on how you achieved it :)

Hi,
i am using dedicated Network for DPM, but your Error is from a different Soruce.
you activated VMQ on to many VM's or Nics in your Cluster
Please read this for more Information:
http://technet.microsoft.com/en-us/library/gg162704(v=ws.10).aspx
Seidl Michael | http://www.techguy.at |
twitter.com/techguyat | facebook.com/techguyat

Similar Messages

Dedicated network for AlwaysON replication traffic when a replica is a Failover Cluster Instance

Hi,
We are planning to setup dedicated network for our Availability Group replication traffic. We have a Failover Cluster Instance as the primary replica and a standalone SQL server instance as the secondary.
I understand that we will need to manually configure the database mirroring endpoints on both the replicas to listen on the specific IP.
But how do I configure the database mirroring endpoint on the Failover Cluster Instance ?
Please help.
Thanks and Regards,
Jisha

If you have a dedicated network for your Availability Group replication traffic between the FCI and the standalone instance, you need to identify if there will be other network services included in the mix. For example, your public network is already using
it's own DNS server by virtue of Active Directory integration. Your dedicated network for replication traffic may or may not have its own DNS server so configuring the endpoints would involve using either IP addresses like the one highlighted in the
blog post or using hosts file with fully qualified domain names so you can use them when creating the endpoints
Edwin Sarmiento SQL Server MVP | Microsoft Certified Master
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SQL Server High Availability and Disaster Recover Deep Dive Course

How Can we force the Hyper-V Replica to use a dedicated network between two hyper-v hosts?

Dear Team,
How can we force Hyper-V Replica to use a dedicated network between two hyper-v hosts?
For live migration, we can choose the desired network in Hyper-V Manager (Use these IP addresses for Live Migration).
I have two 10G adapters teamed together, the virtual switch is created on top as converged network with several vNICs (MangementOS, LiveMigratrion, Backup, etc...)
Each network is set with a specific VLAN to isolate the traffic.
The two Hyper-V hosts are on the same LAN and domain.
Thank you.
Regards,

I have accomplished this by using a DNS pointer specifying an IP address on that dedicated network. That will force traffic done that network.
John Johnston

DPM Backup Network Problems

Hi
I am putting in DPM for a customer who want's to backup his hosts using DPM over a 10GB network. I have set the backup network up as 192.168.22.0/24 (all the hosts and the dpm server has 2 IP addresses each on this subnet) and added the relevant entries
onto the hosts file on each machine.
NSLookup only returns the DNS are registered on the DNS server and windows firewall is disabled on both DPM and Host server for testing however the agent is unable to communicate with the server. Ping is fine, share access is fine, telnet indicates all ports
are open but the agent will not communicate. I have reinstalled the agent again however there still is a problem.
Anywhere else to look in order to get this resolved. The customer only wants the data going over the 10GB network and I'm convinced this is where the problem lies

Try this one
Add-BackupNetworkAddress -DpmServername DPM -Address 192.168.22.0/24 -SequenceNumber 1
from
So You Want to Try a Backup Network?
http://systemcenter-virtual.blogspot.ru/2012/01/dpmhow-to-force-to-use-alternate-path.html
http://social.technet.microsoft.com/Forums/en-US/d4f10fdd-ff2e-486a-8fca-ad62829a0989/dpm-2010-backup-network?forum=dpmsetup
http://social.technet.microsoft.com/Forums/en-US/3130e25a-b74d-45a5-ba77-af5e409f291e/dedicated-dpm-network?forum=dataprotectionmanager
Have a nice day !!!

Dedicated CSV Network and Single iSCSI 10 GB Link?

I just need some information on including a CSV dedicated Network or if that is over kill? Designing a 2012 R2 environment with 4 blades for host. On the back end we have two modules for redundancies that give us 8 usable NICs. That are
then routed through two redundant switches. All 10 GB to the switch, etc.....
Management Network
VM Network (Client Data)
CSV Network
Live Migration Network
Cluster Heartbeat Network
iSCSI (SAN)
Backup Network
Question for all my Hyper-V peers is this, I understand the reasoning behind the CSV Network. Allowing data to move between the four host if one of the SAN networks goes down. However, is it really needed? If we use it I plan to just use
the Live Migration Network as the CSV Network.
So, what do you think? Should I keep the CSV Network and just combine it with the Live Migration Network and then make sure that network card is set to the lowest priority?
One more question. Our current design gives us a 10 GB iSCSI connection. Again on the back plane it is redundant and connected to redundant switches. The only problem I see I will have is since the Host sees only one network that I will get
warnings that I don't have redundancy? So I should need to worry about MPIO and just ignore the warnings?
Kristopher Turner | Not the brightest bulb but by far not the dimmest bulb.

This looks good. The published
best practices guide recommends min. 5 networks, so you're good.
About iSCSI and MPIO, you will need MPIO if there's more than 1 path between the initiator (your server using the iSCSI LUN) and the target (the SAN that's unmasking the LUN). So, if you have 1 iSCSI NIC on the Hyper-V host (initiator) and 1 iSCSI NIC on
the SAN, there's no need for MPIO, since there's 1 path. If you have 2 iSCSI NICs on the host, and 2 iSCSI NICs on the SAN, you have 4 paths between that particular initiator and target. Depending on the SAN vendor you may have to manually spell out the 4
path in MPIO config (simply pointing out the IPv4 address of each of the 4 NICs. You do not NIC team or port channel iSCSI NICs. Installing MPIO will require a reboot. Default MPIO algorithm is round robin, can be changed, but you rarely need to do so.
Sam Boutros, Senior Consultant, Software Logic, KOP, PA http://superwidgets.wordpress.com (Please take a moment to Vote as Helpful and/or Mark as Answer, where applicable)

Network Set Up

This one is a doozy, mainly due to me explaining to set ups. Initially, I set up a wired network with a Wireless Router (WRT54G2) as the lead router.
This is in a small office application style environment.5 wired pc's. We are using DSL (w/DSL modem) into a WRT54G2 ,with:
-#1 port going to a pc,
-#2 port going to a 5 port switch,that goes to another pc, a shared wired only network printer and another WRT54G2(For wireless access). -#3 port going to a decent Belkin wireless router for wireless access. -#4 port going to a 5 port switch,(here is where the pretzel comes into play)
The 5 port switch then goes to -#1 another WRT54G2 for wireless access. -#2 heads down to a linksys 8 port switch.
The 8 port linksys switch: -#1 to a wired PC -#2 to a wired PC -#3 to a WRT54G2 -#4 to a 5 port linksys switch which goes into a WRT300N and a 5 port switch which goes to another WRT300N,WRT600N. -#5 to a 5 port linksys switch which goes to a PC and a WRT54GS.
All these routers put out wireless access in their locations. Then a mysterious "Programmer" comes along and makes some changes to the lead router so he can access one of the wired PC's from his home. In turn the lead router stopped putting out wireless.So I set the puppy to factory settings ,removed his changes(Blocking him)
Then I read linksys routers should not be in line with each other.So like a genius I replaced the head router with a 5 port linksys switch and lost "Internet access" to everything after the switch except for 1 port on the second switch, that one port would not give internet to anything along the line except for one wired PC.
For the hell of it I placed a router where the second switch was and was granted internet all over once again,but had issues with the one wired pc and shared files with the other wired PC's at the head switch. Seems things would work fine with a router after the modem and switches into routers there after.
So my questions would be
-Is it a problem running a router after a router ?
-Why would switches lose internet access on some ports but not all?
There is No firewalls up. No uplink ports are being used.
How would you choose to route for a wired network that needs to toss out wireless at different points around the building ? I didnt want to go about linking up wireless to wirless using wireless.The goal here was to use the wired to unleash wireless at certain sections and using the wired due to the fact that the building design and material would surely block wireless to wireless,as well as trying to keep the items out of site. Suggestions and ty for reading

This is difficult to troubleshoot without knowing the exact configuration of all those wireless routers and the exact LAN setup, in particular:
* How is each router connected to the LAN? Through its WAN/Internet port or a numbered LAN port?
* Configuration of each router: internet connection setup (DHCP, Static IP, etc.) and the details if applicable (i.e. static IP address, subnet mask, dns, gateway, etc.)
* Configuration of each router: LAN connection setup, LAN IP address, subnet mask, DHCP server enabled/disabled, if enabled, address pool.
* Configuration of each router: running in gateway (NAT) mode or router mode. Any added static routes.
* Configuration of computers, i.e. do they get their IP address through DHCP from the router, from a server or do they use static IP addresses.
* Do you want a single LAN (all devices are connected to the same LAN and can communicate with each other) or do you need separated LANs. If the latter for what purpose (e.g. security).
* How many wireless networks do you need? Do you want a single roaming network or dedicated networks at different places?
* How do you do the wireless channel assigments of those wireless routers? Which channels do you use?
If some computers on a switch have internet and some not it is often because you have two DHCP server running in your network one of which gives out bogus settings.

Network Drives and Bugs - A Word of Caution

A couple of weeks ago I replaced my trusty Buffalo 802.11b/g wireless router with an AirPort Extreme Base Station so that I could set up a network drive using a 500GB USB hard drive attached to the AEBS, which was considerably less expensive than buying a dedicated network drive/file server appliance.
Yesterday my Apple TV lost its network connection for no apparent reason and I was unable to reconnect it. After resetting both the Apple TV and the AEBS I still could not establish a connection due to an "incorrect password" that was not incorrect. After re-entering the same password again into the AEBS and then the Apple TV I could finally reconnect. I would think that this problem would be attributed to a software bug in either the AEBS or the Apple TV.
During the re-syncing process I started getting error messages that iTunes could not find many of my files. It turns out that iTunes could only find files that were imported into it after I moved the library to the network drive. Files that had been imported prior to the network drive had to re-imported back into iTunes before it would recognize the correct file path for these files even though the correct file path to the network drive was specified in the iTunes Preferences.
It appears that iTunes was not automatically checking the library path specified in the Preferences settings for the files it couldn't find, possibly the result of another bug in iTunes.
iMac Mac OS X (10.4.9) The more I think, the more I think I shouldn't think more.

In any case, it
shouldn't matter whether the files were pre-loaded or
copied over the network as long as the files are
actually on the drive and the specified file path is
correct.
The file path specified in Preferences > Advanced > General just specifies where the iTunes Music Folder is located, not the path to any particular media file, which could be anywhere. Changing this preference affects all future files imported into the Music Folder but not those already in the iTunes library. IOW, this is more like a default location than a global file path.
The library file is a database stored on the local drive in ~/Music/iTunes/iTunes Library. It contains the iTunes metadata reference record for each media file, among other things. There is also an iTunes Music Library.xml file in the ~/Music/iTunes/ folder, used by other applications. (See What are the iTunes library files? for more about this.)
The content of these files is maintained by the iTunes app, not the file system. So if you manually move your iTunes Music Folder to another location (IOW, not through the application), the database may not be updated properly, leading to error messages because the file path info may be wrong.
To avoid this, you should follow the procedure described in iTunes for Mac: Moving your iTunes Music folder or iTunes for Windows: Moving your iTunes Music folder.
I believe ... the lost files in iTunes may be the
result of software bugs in iTunes, Apple TV
and/or AirPort Extreme.
For this much at least, the "bug" is in your expectation of what setting the iTunes preference does, not in the operation of the application itself. It may or may not have anything to do with your other problems, of course.

Live Migration and private network

Is it a best practice to put up a Private Network beetween the nodes in a pool (reserving a few network cards and switch ports for it), to have a dedicated network for the traffic generated e.g. by live migration and/or ocfs2 heartbeat? I was wondering why such setup is generally recommended in other virtualization solutions, but apparently it's not considered strictly necessary in OVM... Why? Are there any docs regarding this? I couldn't find any.
Thanks!

Hi Roynor,
regarding the physical separation beetween management+hypervisor and the guest VMs, it's now implemented and working...
My next doubt on the list of doubts :-) at this point is:
I could easily set up ONE MORE dedicated bond, create a Bridge with a private IP on it on each server (e.g. 10.xxx.xxx.xxx), and then create a Private VLAN completely insulated from the rest of the world.
I'd be putting the physical switch ports where the Private Bonds/Bridges belong to on the same VLAN ID.
But:
- How can I be sure that this network WILL be actually used by the relevant traffic? If I'm not wrong, when you set up e.g. a physical RAC cluster, at a certain point you are prompted to choose what network to use for the Heartbeat (and it will be marked as PRIVATE), and what network will be used by clients traffic (PUBLIC).
In Oracle VM such setting does not exist... Neither during installation, nor in VM Manager, nowhere.
- Apart from Security, I'm doubting that during heavy VMs migration problems could arise, because if the network gets saturated, there are chances that the OCFS2 heartbeat would be somehow "lost", therefore messing up HA etc. This is at least the reason why in a RAC setup a private network is highly recommended.
- I finally found that doc you mention from IBM (thanks for pointing it out!) but my opinion is that THEIR INTENTION was to separate the traffic at the same way I'd like to, but there is simply NO PROOF that such setup would work... They do not mention where you can specify what traffic you want to be on what network...
This is a very important point... I'm wondering why this lack of information.
Thanks for your feedback, btw
Edited by: rlomba on Dec 17, 2009 6:16 AM

Sun Cluster with Netapps - iSCSI quorum and network port

I am proposing Sun cluster with Netapps 3020C.
May I know
1) OS is Solaris 9. The SUN OSP says that we need to obtain an iSCSI license from Netapps. Is this the iSCSI initiator software for Solaris 9 to talk to the NAS quorum? Or do I need to purchased a 3rd party iSCSI initiator ?
2) We provide 2 network ports for the Netapps private NAS LAN. Is it a must to cater another dedicated network port for the iSCSI communication with the quorum?
3) If we need purchase a 3rd party iSCSI initiator, where can we get this? I have checked Qlogic and Cisco, they are both not suitable for my solution.
Appreciate your help

Hi,
1) OS is Solaris 9. The SUN OSP says that we need to
obtain an iSCSI license from Netapps. Is this the
iSCSI initiator software for Solaris 9 to talk to the
NAS quorum? Or do I need to purchased a 3rd party
iSCSI initiator ?Have a look at http://docs.sun.com/app/docs/doc/817-7957/6mn8834r2?a=view
I read the "Requirements When Configuring NAS Devices as Quorum Devices"
section as this is the license for the iSCSI inititator software.
So you need to enable iSCSI on the netapps box and need to install a package from netapps (NTAPclnas) on the cluster nodes.
2) We provide 2 network ports for the Netapps
private NAS LAN. Is it a must to cater another
dedicated network port for the iSCSI communication
with the quorum?Have a look at http://docs.sun.com/app/docs/doc/819-0580/6n30eahcc?a=view#ch4_quorum-9
I don't read such a requirement there.
3) If we need purchase a 3rd party iSCSI initiator,
where can we get this? I have checked Qlogic and
Cisco, they are both not suitable for my solution.
Appreciate your helpI don't thibk you need such a 3rd party iSCSI initiator, unless this is stated in the above docs.
Greets
Thorsten

Network Stream Fails Before Timeout

Is there any reason why a network stream would fail before the timeout? I was using streams on an sbRIO-9632 and all throughout testing I had no problems. But, when I hooked the network up to NASA's dedicated network cable (which goes through one or two switches to eventually connect to my router, the same one used for testing; at NASA's Lunabotics Mining Competition; I think they said it was a virtual network), the streams, as far as I could tell, were failing between immediately and the 15 second timeout. If I recall correctly, it rarely made it beyond the timeout value.
Unfortunately, I did not have the time to successfully debug the system while connected to that network cable and switches so I was not able to get the exact error that was occuring. I do know that the error was originating from the sbRIO because on my computer it was showing that the network streams were closed.
If you are curious about the architecture being used, it was very similar to "Teleop - Host Acquisition" in the robotics module project wizard.

Unfortunately, I've been unable to recreate the issue without being connected to the NASA setup (something I won't be able to do for the next year). The best that I can tell you is that the "fix" that I implemented was to simply re-establish the network stream and prevent it from stopping the rest of the program using a simple state machine for each end of each stream. It was able to re-connect fairly quickly so I never lost the connection for an appreciable amount of time (which would be required to see a loss in connection in MAX I'm assuming; maybe I'm wrong assuming this?).
Anyways, because I cannot replicate the issue and therefore test it again, I will try to not take up too much of your time on this one. I was just hoping to find out if there was any known circumstance that would cause the stream to fail/timeout prematurely.

Database Replication never fall back over MAPI Network in case of dedicate network outage

Hi All,
Exchange 2010 SP3 RU4 and every time I have an outage on dedicated network the replication stop working and all Database looses sync (content Index) and I have to manually resync all as suggested on
http://exchangeserverpro.com/cannot-activate-database-copy-content-index-catalog-files-in-failed-state/
Should be MAPI network used to replicate and sync (even if replication disabled) in case of dedicate network outage ?
I'm reading everywhere "Yes, Database copy will revert on MAPI network in case of dedicated network's outge, even if Replication is disabled on MAPI network" but it's not my case.
Everything else up and running fine but I'd like to avoid to resync manually hundreds of DB.
Any suggestion greatly appreciated.
Red.

Hi Andy,
I know the theory but replication and seeding NEVER revert on my working MAPI network
"In the event of a failure affecting the Replication network, if the MAPI network is unaffected by the
failure, log shipping and seeding operations will revert to use the MAPI network, even if the MAPI network has it's ReplicationEnabled property
set to False."
This is NOT true in my environment (Ex 2010 SP3 RU4)
Red.
Well, in your case just the indexing is failing yes when this happens? Or is all replication failing?
Twitter!: Please Note: My Posts are provided “AS IS” without warranty of any kind, either expressed or implied.

Network devices discovered but not managed

SCOM 2012 R2 management group. A dedicated network monitoring resource pool consists of two MSs. These two MSs have been removed from AMSRP and other two default resource pools (AD.., Notification...) - is this correct?
Two discovery roles:
role1 runs on GWS1 discovered (explicitly) 5 devices and shown all "healthy". This rule was using AMSRP to monitor, but changed to the dedicated pool after it was created.
role2 (added after the dedicated resource pool was created) runs on GWS2 discovered (explicitly) 2 devices but shown as "not monitored"
How to find out what's wrong? (log files etc?)
Anything need to check with the resource pool settings?
Thanks.

Hi,
Do you mean that you have discovered the two network devices on your Management server, but it is not monitored.
This issue maybe caused by the proper management pack was imported, please go through the below article to get more information about how to monitor network device by using SCOM:
http://technet.microsoft.com/en-us/library/hh212935.aspx
Network Monitoring using System Center Operations Manager 2012
http://blogs.technet.com/b/rohitkochher/archive/2011/11/26/network-monitoring-using-system-center-operations-manager-2012.aspx
Regards,
Yan Li
Regards, Yan Li

Matching dedicated NICs between VM Server and VM

I have multiple VM servers and each server has 2 physical NICs.
One NIC for public connects to switch and the other one for private network connects to router.
Each VM server has Virtual Machines and each VM has also eth0/eth1 matching xenbr0/xenbr1.
My goal is eth0 from one VM goes to public through VM server's eth0 and eth1 from VM goes to router through VM server's eth1.
VM 1 eth0 -> VM Server 1 eth0 (xenbr0) -> switch -> public network
VM 1 eth1 -> VM Server 1 eth1 (xenbr1) -> router -> VM Server 2 eth1 (xenbr1) -> VM 2 eth1
VM docs say all VIFs share the physical NICs to communicate with the outside.
Is there any configuration to match one by one(dedicated network) like described above?

I believe you mean running the VM Manager in the VM Server dom0. You'd need to allocate at least 2GB to dom0 to support the memory requirements of the Manager. Also, this is not supported, and trying to get it to work can take a lot of time. The dom0 doesn't have the necessary packages to install the Manager.
In another thread you were asking about running the Manager in a VM on the Server. You'll need 2GB for the Manager VM, 512MB for the Server, what's left can be used for other VM's. With 3GB, there's very little left. 4GB may work.
You could use an old 2GB pc or laptop as your Manager system. It runs fine on a P4.
Edited by: herb on Aug 28, 2009 4:52 PM

Question on Cluster network configuration

Hi Guys,
Just wanted to know the best practices for configuring network for clusters.
As far as I know, recommended is to have a separate network for Public/client communications and separate network for private heartbeat communication.
Does this change for Win 2008 & Win 2012 Clusters? I say this because I heard that there is no more need to have 2 dedicated networks and only 1 network is enough.
Is this true? If it is true , does it not a single point of failure ? What is the best practices for configuring sql clusters?
Thanks in advance.

Hi Samantha v,
You can first start with this video you can get an over view about cluster.
How Do I: Build a highly available virtualization cluster with Microsoft Windows Server 2008 R2 and Hyper-V?
http://technet.microsoft.com/en-us/video/how-do-i-build-a-highly-available-virtualization-cluster-with-microsoft-windows-server-2008-r2-and-hyper-v.aspx
I’m glad to be of help to you!
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Fcp capture on gigabits network, on distant server

What are the rules for distant digits on a win 2003 server, with cx500 EMC hard disk and gigabits ethernet network. thanks for your help
macbook Mac OS X (10.4.6)

Rules?
Working with Video over a network requires dedicated bandwidth. Even though Giga ethernet appears to be quick enough for simple DV, it can not guarantee the bandwidth and will often drop frames. Ethernet is an interference protocol and is designed to accomodate out of sequence packets. Video however, is much more time sensitive than an email or spreadsheet and will not work if the packets arrive out of sequence or are delayed in the process. The people who I have heard made it work, do it on a local and dedicated network - that is - no other demands on the system - ONLY video and only a few machines.
What you need is an isochronous system - that is - a system that can reserve bandwidth for certain time sensitive operations. Apple's Xsan/xRaid can do this.
good luck.
x

DPM Dedicated Networking

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