Overlapping Boundaries

I am sorry for asking this question yet again, but I am getting hammered by people in my company and want to make sure I get this right.

I am migrating from 2007 to 2012.  I am not using auto site assignment.  Instead of flipping an entire AD site, they want me to flip only a few subnets from within a larger subnet boundary. So, I just want to make sure I have all my facts right.

- I can have overlapping boundaries for content.  So, if I leave the boundaries in 2007 alone and simply add any subnet or AD site into the boundaries and boundary group in 2012, there is no issue.  

- I also have a single subnet boundary for wireless in each office. Since I am only adding a subset of the subnet boundary, is there an issue of just adding the entire wireless subnet to the 2012 boundary?  The reason being is that of course people pick up and move around.

- Same goes for a wired connection. If they take laptop and hard wire it in on another floor with another subnet.

In conclusion, since 2007 and 2012 are totally independent and I am not using auto client assignment, it does not matter if I have overlapping boundaries.  I can leave them overlapping until I migrate all clients from 2007, which could take a week or two.

In my testing we brought up a separate VLAN as to not have overlapping boundaries, but since this is a 2007 to 2012 and not 2012 to another 2012 instance, the overlapping boundaries will never be an issue.

Thanks again for your answers.

September 1st, 2015 10:29am

You already ask and pretty sure people already answer

Overlapping boundaries is not OK when using for site assignment. So you are fine.

The client  that are reporting to the SCCM 2007 don't know the boundaries that SCCM 2012 provide and vice versa.

Don't worry



https://social.technet.microsoft.com/Forums/en-US/e71e6bbd-d7b8-4765-af13-39d75a9e39bb/sccm-2012-overlapping-boundaries?forum=configmanagerdeployment


  • Proposed as answer by Jörgen NilssonMVP 16 hours 49 minutes ago
  • Marked as answer by anati 16 hours 43 minutes ago
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September 1st, 2015 10:43am

Again, I aplogize for askign this multiple times in multiple ways.  If I do not give exact acurate answers, I get slammed pretty good. I just need to make sure I dont effect other production machines.

Thanks again to all!

September 1st, 2015 11:10am

One thing I would highly recommend is to stop using Subnet Boundaries though and start using IP Address Range boundaries. There are some significant differences.
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September 1st, 2015 11:28am

Hi Jason, Thanks for the additional info. I have a mixture of AD sites, subnet and IP ranges in SCCM 2007. ( I inherited all of this)  

I was thinking to migrate them as is and then I can adjust once all clients are on 2012.

September 1st, 2015 11:48am

Honestly, why migrate and then change? That's double the work. Just create them as ranges in the new site from the get go.
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September 1st, 2015 1:07pm

You already ask and pretty sure people already answer

Overlapping boundaries is not OK when using for site assignment. So you are fine.

The client  that are reporting to the SCCM 2007 don't know the boundaries that SCCM 2012 provide and vice versa.

Don't worry



https://social.technet.microsoft.com/Forums/en-US/e71e6bbd-d7b8-4765-af13-39d75a9e39bb/sccm-2012-overlapping-boundaries?forum=configmanagerdeployment


  • Proposed as answer by Jörgen NilssonMVP Tuesday, September 01, 2015 3:00 PM
  • Marked as answer by anati Tuesday, September 01, 2015 3:06 PM
September 1st, 2015 2:41pm

Sorry jason, I misstated. I meant, I will migrate the client before. But I will setup the subnets as ranges instead.  Thanks again.
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September 1st, 2015 2:48pm

Hey Guys,

Just wanted to give you an update.  I did as you guys have suggested and my pilot rollout went smooth.  

Thanks to everyone!

September 3rd, 2015 11:54am

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