Ask Your Question

How many Network Interface Cards are required?

asked 2015-08-19 12:08:36 -0800

ejkim gravatar image

updated 2015-08-19 12:41:43 -0800


How many Network Interface Cards are required to install Arno for OPNFV? I am installing fuel and OPNFV system according to "Fuel deployment: Installation Guide" in the following web site: It is said that 3 NIC cards per computer (Private/Public network, SAN, admin) are required to install OPNFV for the Arno release. However, there are only 2 NICs per servers. Do I need 2 separate NICs for private and public network? Or is one NIC enough because private network is just virtual network which doesn't require physical NIC? I don't need SAN currently.

Thank you for your answer in advance,


edit retag flag offensive close merge delete

2 answers

Sort by ยป oldest newest most voted

answered 2015-08-19 15:27:57 -0800

lukehinds gravatar image

updated 2015-08-19 15:32:12 -0800

Hi Kim,

I don't know the fuel deployment so well, so not sure if this is something you can set up during install, but you can get by with as little amount of NICS as you like. The main caveat though is you won't be using the reference architecture or recommended specs. So if your machine is for hacking /playing around on, I would say go ahead. If its for serious lab work etc, better to go with the reference arch.

The main drivers for separate nics is security (isolation) and less traffic congestion.

I have a two nic server myself (no san), where one is for mgmt traffic and the other is my external bridge, which is my public network where the floating ip's assigned, my private network is all overlay / non physical.


edit flag offensive delete link more

answered 2015-08-25 05:40:58 -0800

lmcdasm gravatar image


Depending on your approach - meaning if you want to use VLANs or not, you can use as little as a single NIC, or you can use a NIC per network required.

FUEL has 4 (ok 5) networks to think about essentially - PXE(FUEL) - untagged network defaulting to - MGMT - tagged by default to 100 - - STORAGE - optional - tagged 102 by default - - PUBLIC - optional tag - default in the configuratino. - Private (for your VNI's for VLAN / Tunneling).

once you have assigned your nodes, you can go into the "Configure Interfaces" screen in the Deploy Nodes (make sure you have check boxed the nodes you want to change) and drap and drop the networks to the NICs that you have on your physical node (the targets for deploying compute/control that is).


edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

[hide preview]


Asked: 2015-08-19 12:08:36 -0800

Seen: 471 times

Last updated: Aug 25 '15