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From Adam Grochowski <>
Subject Re: [PROPOSAL] EIP across zones
Date Tue, 26 Mar 2013 14:40:51 GMT
So I'm curious - what is the proposed method to move a single IP
across zones (presuming these zones span regions).  As Chiradeep
mentioned earlier, /24 is the largest block that will be advertised,
so it would necessitate moving (or advertising in two locations, and
back hauling back to one)  an entire class C to accomplish this (or
some black magic like LISP).

My other question revolves around the actual usefulness of EIP across
regions, and whether or not the problem can be solved simply with DNS
changes / global load balancing.

On Fri, Mar 22, 2013 at 4:34 AM, Murali Reddy <> wrote:
> On 22/03/13 9:37 AM, "Manan Shah" <> wrote:
>>My assumption is that EIP for VPC should work exactly the same as EIP for
>>Isolated Networks since EIP is like another Public IP except that it can
>>be moved across zones. Also, we do support static NAT in VPC as well as
>>Isolated. So, my thinking is that it might just work with minimal effort.
> It might not just work. I can think of questions like, can I move the EIP
> across the tiers in VPC? Since cloudStack can not have tier's of VPC in
> multiple zones, question of moving across zones does not arise? Does EIP
> service provider and 'public gateway' need to be same? Does network ACL's
> has any impact? Etc.
> It would take significant time to think through the scenarios, tweak the
> existing VPC functionality to adapt to EIP, write unit test, marvin test.
> Also QA effort for EIP in isolated network won't be same for VPC.
>>Manan Shah

Adam Grochowski ** SunGard Availability Services ** 401 N. Broad
Street - Mezzanine ** Philadelphia, PA 19108 ** 215-446-2679 **

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