Migration for Cisco wlc2504 to another wlc2504

I am doing a migration from one wlc2504 to another wlc2504.  I have copied the config to the new one. I have rebooted my access points but none of them are showing up?  The config did take with the upload.  Not sure what I am missing.  Hoping someone might have an idea as to what I am missing?
DaveKall42Asked:
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Craig BeckCommented:
What version of code on the WLC?

Switch port config same as old WLC?

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DaveKall42Author Commented:
Swtich port is identical as I am using the same port as the old.
DaveKall42Author Commented:
Ok so old controller is 7.6.100 and the new controller is 7.0.220.  I bet I need to upgrade the new controller to the 7.6.100 right?
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Craig BeckCommented:
Bingo! :-)
DaveKall42Author Commented:
What if I updated the new controller to v8.x would that work?
Craig BeckCommented:
Yes, but be careful.  Some APs aren't supported in v8 code.

Also, your supported APs will join and download the new code first before being usable.

What APs do you have?
DaveKall42Author Commented:
I did it and they all came up.  I didn't have a choice because the code I needed was deferred and I could not download.
Craig BeckCommented:
Sounds good :-)
DaveKall42Author Commented:
question for you.  If you have 2 controllers district wide and you put in a DNS entry for WLC-CAPWAP-CONTROLLER to point to a WLC how can I setup DNS to work so that I can have 2 separate controllers for new access points?
Craig BeckCommented:
Using DNS is usually considered a global method.  DHCP is preferred as you can specify option 43 per scope and specify different WLCs if you want to.

If you do use DNS you could put all APs on one WLC then use the High Availability tab per AP to move specific APs to the other WLC.
DaveKall42Author Commented:
I did put in option 43 but it doesn't seem to be working for the new AP.  I might have done it wrong. Do you have an info on that?  Server 2008 R2 DHCP
DaveKall42Author Commented:
So here is my question for you.  Does it matter in the first part what AP type I put in the hex?
DaveKall42Author Commented:
We have AIR1601i's.
Craig BeckCommented:
In the hex you need to put f104 if you're only providing one WLC IP.
DaveKall42Author Commented:
I just noticed that.  I can use the 043 vendor specific right?  I don't have to create a whole new vendor class do I?
Craig BeckCommented:
You need to do it exactly as per the doc or it won't work.
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