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From Hugo Trippaers <>
Subject Re: Question on NetGuru vs Network Element
Date Wed, 03 Oct 2012 20:03:35 GMT

It depends on what you want to do, I could get that from your email. If you need to be involved
in the creation of the L2 network (like for an SDN solution) you need a guru to take care
of that.

If you just want a higher level element like a firewall or a loadbalancer just dealing with
the element is enough.



Verstuurd vanaf mijn iPad

Op 3 okt. 2012 om 12:02 heeft "Sridhar Devarapalli" <> het volgende

> Hi,
> I have a question on which component a network service provider for
> Cloudstack should be developing - is it a Network Guru or Network element?
> I know that it is definitely necessary to develop a network element. But I
> though that by default, Cloudstack virtual router will provide the basic
> NetGuru functions (IPAM, DHCP, DNS etc). So didn't see a need to develop
> the NetGuru API.
> However, looking through a plugin implementation, I noticed that a vendor
> implemented all the methods of the Network Element as well as the
> "implement" method of the NetGuru. It seems like the only thing that the
> vendor was doing was to create a logical network in the NetGuru implement
> method. My question is whether this extra step is necessary.
> My understanding of the workflow for creating a network through a network
> provider is as follows -
> NetworkElement.Implement( ) - Create the specified network on the that
> specific Network element. This method is called when the first VM of the
> network is brought up.
> NetworkElement.Prepare( ) - Add the VM to the specified network. This
> method is called whenever a new VM boots up in that network
> NetworkElement.Release( ) - Remove the VM from the specified network. This
> method is called whenever a VM is shutdown.
> So can someone please clarify if this workflow seems right (and sufficient)
> and if there's anything that I'm missing? Really don't see why I need to
> implement the NetGuru.
> thanks!
> Sridhar

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