On Wed, Apr 20, 2016 at 1:26 PM, Will Stevens <williamstev...@gmail.com>
wrote:

> I'm not sure that is a good idea. There are a LOT of implications with this
> idea.
>
> For example, many hardware appliances can not handle overlapping ip space
> between networks. Because of this they can't be implemented in a vpc, only
> isolated guest networks.
>
​Why is this a problem in VPC specifically, Will? Or more to the point what
do you mean by overlap?

Even if a vpc would contain any kind of overlap, it would still mean that
those pieces of hardware can handle only one tier​. the implemetation of
that tier would not matter, would it?


> I know there are a lot more examples like this, so it would be a dramatic

rewrite of a lot of code to make it work.
>
​Nice, let's go. (pun intended only for those that want to see it)​



> On Apr 20, 2016 12:49 AM, "Koushik Das" <koushik....@accelerite.com>
> wrote:
>
> Another way to look at it would be to make isolated network a special case
> of VPC (having a single tier).
>
​I would love to see that.​



>
> -Koushik
>
> ________________________________________
> From: Nick LIVENS <nick.liv...@nuagenetworks.net>
> Sent: Tuesday, April 19, 2016 2:46 PM
> To: dev@cloudstack.apache.org
> Subject: [DISCUSS] Network offerings for Isolated Networks / VPCs
>
> Hi all,
>
> Currently, there is no reliable way to tell whether an offering was created
> for an Isolated Network or for tiers in a VPC. This is determined based on
> providers. (ConfigurationManagerImpl.isOfferingForVpc)
>
> In the UI, you have the possibility to check a flag for "VPC" during
> creation of a network offering. This flag changes the list of providers per
> service. However, this flag does not get sent to the backend, and is not
> persisted as a result.
>
> It is possible to create a network offering that was originally meant for
> VPCs, but without using any of those providers which results in a network
> offering that can't be used by VPCs because of this check. This is very
> confusing for an end user, and is actually wrong.
>
> Short term, I suggest we persist this flag "forvpc" in order to determine
> whether a network offering is meant for VPCs or Isolated Networks.
>
> Long term, we might want to rethink this implementation to a more generic
> solution to make network offerings usable for both Isolated Networks and
> VPCs at once, if possible.
>
> What do you guys think?
>
> Kind regards,
> Nick Livens
>
>
>
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-- 
Daan

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