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-   -   How many network interfaces do you keep in a server? (http://www.datacentertalk.com/forum/showthread.php?t=20016)

joe 07-23-2009 12:36 PM

How many network interfaces do you keep in a server?
 
How many network interfaces port do you normally keep in a single server? If we have two network port, and if primary goes down how can we switch it back to secondary? Do we need to do any configuration changes? Is it all on the applications?

Schumie 08-21-2009 09:56 AM

You'll either have NIC "Teaming", Port channels, or Link Aggregation. Depending on the vendor, they may call this a multitude of different names!

Viki 09-16-2009 07:18 AM

Quote:

Originally Posted by joe (Post 28495)
How many network interfaces port do you normally keep in a single server? If we have two network port, and if primary goes down how can we switch it back to secondary? Do we need to do any configuration changes? Is it all on the applications?

Yes, you need to configure the network interface settings in the server to use secondary network port incase the first goes down.

Gavin121 11-23-2010 06:06 AM

If you're going to use the second external connection only for VPN, then there's no problem and no additional software is required. If you wanted to support two Internet connection for general use, then you'd need RainConnect at www.rainfinity.com

mike2011 12-04-2010 07:05 AM

Quote:

Originally Posted by joe (Post 28495)
How many network interfaces port do you normally keep in a single server? If we have two network port, and if primary goes down how can we switch it back to secondary? Do we need to do any configuration changes? Is it all on the applications?

Hey this is really nice question, I will be happy if I am getting the answer. Because adding more network capacity via multi-port network adapters can enhanced required availability for business critical migrations. Host node reliability is critical when especially multiple virtual machines operates on a single server, thus in such cases reliability of server becomes much more important.

jackson 12-06-2010 06:22 AM

Yes mike, I totally agree with you.Multi-port network adapters is really useful for major and critical businesses.

HostAddonLtd 01-27-2012 09:23 AM

You can use as many cards as you slots for, however, when installed on a system with Client OS (None server Windows), you can Not use NICs that are configured on the same Network (Subnet).

prywordpress 06-12-2012 06:30 AM

This is a topic that comes up all of the time. Especially when dealing with Hyper-V clusters. The short answer to the question is - it depends. You can use as many cards as you slots for, however, when installed on a system with Client OS (None server Windows), you can Not use NICs that are configured on the same Network (Subnet).

egni 08-01-2013 01:00 PM

You can do NIC Teaming if you are looking for load balancing + Fail over. Incase you need it just for Fail over then you could manually switch between the interfaces. Anyways this does not happen very often so manually switching should not be an issue. Make sure the interfaces are configured and ready to go during failure.

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