Adding 3 Airport Express into Windows Server Network for Wireless

Here is my issue. I have three Airport Express' that I want to use to create a small wireless network for our guests and presentations.  I bought 1 AE and set it up and everything is good, except it doesnt get far enough down the building so I bought 2 more and I want to use them to "Repeate or Extend" the network coverage:

Here is the working AE set up via Ethernet into my Windows enviroment:

AE1:  
Internet Connection tab

Connect Using Ethernet
Share a public IP address

TCP/IP Tab
Configure IPv4: Manually
IP:   192.168.34.9
Subnet: 255.255.255.0
Router Address: 192.168.34.95
DNS:  192.168.34.240
Domain:  (XXXX.com)

DHCP Tab
DHCP Begining 10.0.1.2
DHCP End 10.0.1.200

NAT
Default Host 10.0.1.  (not set) but the Box is checked for Enable NAT port Mapping

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So when I go to configure the other two I plug them in via ethernet and make the following changes:

Extend a wireless network
  (put in Network Name and Password)

Then all hell breaks loose - My internal network becomes really slow, DNS isnt resolving, cannot access Windows File Shares, etc.

As soon as I unplug the 2 AE that are "Extending Network" all goes back to normal
Travis HahnAsked:
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John-Charles-HerzbergCommented:
Can you connect the 2 new AE to exiting Ethernet cables?



Thanks
JC
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Travis HahnAuthor Commented:
Yes that is what I am planning to do.  In each of the locations there are existing ports.  So I want to plug in via ethernet and broadcast the same wireless settings

However when I have ethernet connected and set them to Extend Wireless network - thats when the whole network goes into a tizzy...
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John-Charles-HerzbergCommented:
What I have on my network is the other AP are set to Bridge mode with DHCP off

Thanks
JC
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John-Charles-HerzbergCommented:
Have a look at this link, what you need is under Roaming Network (Ethernet-connected Wi-Fi base stations) > Multiple Wi-Fi base station network types

http://support.apple.com/kb/HT4145
AP
All Wi-Fi base stations within the roaming network should use the same passwords, security type

Thanks
JC
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Travis HahnAuthor Commented:
That option dosent work - the ethernet ports are punched down to the server room, not to where the AE1 is
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strungCommented:
If the AE's are all connected by ethernet, they should all be set to bridge mode.
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strungCommented:
Follow the instructions here: http://support.apple.com/kb/HT4260 using the second setup (bridge mode) since your existing network is already doing the DHCP. Otherwise you will be getting double NAT which causes problems.
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John-Charles-HerzbergCommented:
This image has the AP going to a HUB.

AP to hub
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Travis HahnAuthor Commented:
Strung - I have set the second AE up in Bridge Mode.  Are the TCP/IP settings going to be the exact same as the Primary AE?

When I look that the TCP/IP tab now it has the same manually assigned IP, Subnet Mask, Router Address, and DNS servers.

I am thinking this is not correct.  As the second and third AE should be getting their DHCP from the AE1 and not from my local Windows Network?
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strungCommented:
If you have a DHCP server on your Windows network, all three AE's should be getting their IP's from the Windows DHCP server.
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strungCommented:
All three AE's should be in bridge mode.
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Travis HahnAuthor Commented:
I wanted the Wireless Clients to get different IP scheme so that I could troubleshoot better knowing it was a Wireless Client versus a local client.  Should I not be doing that?
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strungCommented:
No. If you do that you wind up with double NAT and that doesn't work.
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Travis HahnAuthor Commented:
Okay - that might have been my problem.  So set all three AE in BRIDGE MODE.

So do I do setup the other 2 as EXTEND Wireless?
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strungCommented:
No. Not if they are connected to the main network by ethernet. Extend wireless is only if you are trying to extend a wireless network wirelessly.
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Travis HahnAuthor Commented:
So I would create all three with the same user name and passwords.

Can I import the config file from the first AE to the other two?
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strungCommented:
Yes. Just follow the instructions here:  http://support.apple.com/kb/HT4260
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Travis HahnAuthor Commented:
Okay - maybe the last Question.

Can I manually set the IP's on the AE so they dont take up 3 of my DHCP pool?
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strungCommented:
Yes. As long as they are in the same subnet as the DHCP pool, but outside the range set by the DHCP server.

For instance, if your DHCP server uses 192.168.1.100 to 192.168.1.150, set the AE's to 192.168.1.151, .152 and .153
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Travis HahnAuthor Commented:
Yep - I have a series of 3 open IP's that are not apart of my scope but in the same network...
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Travis HahnAuthor Commented:
Thank you
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