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SonicPOINTS connected to Switch versus specifically to SonicWALL Appliance

Hello E-E,

Here wer go!

I have a customer that recently purchased a building next door.  The current building is: 'Building One' and the new building is: 'Building Two'.

Building One -

* Sinlge Firewall TZ 210 [Lattest Firmware]
* Single Dell Switch 2800

* SonicWALL Port XO: (192.168.199.1) [LAN ZONE] -- patched to Dell Switch 2800.
* SonicWALL Port X3: (192.168.200.1) [WLAN ZONE] -- CAT5 run about 85 feet to switch number 2 [Dell 2800] in building next door.

Builing Two -

I have two SonicPOINT NDR's connected to switch 2 in next door building [Dell 2848].  The SonicPOINTS come right up with no issues on the SonicWALL.  I am able to configure them with no problems.  That said, I could have a major problem too.  Something that would normally be a problem with larger networks and not so much with smaller ones like what I have described above.

Other devices are also connected to both switches.  I am concerned because the article below states that this should not work or is not supported.  Basically the article below states that I **MUST** connect SonicPOINTS directly the SonicWALL Appliance.

http://www.brandontek.com/networking/solution-to-your-sonicpoint-wlan-woes/

Please help me understand so that I can modify sites in this config.  Your help is greatly appreciated.

Rob
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Ugo Mena
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So can I keep the SonicPOINTS connected to the Dell switch? Then a patch cord from the Dell switch back to the port on the Sonicwall UTM appliance?  This is how I have many of my locations now.  Some of the Dell switches have up to 4 SonicPoints connected to a switch.  That said, the switch would have two cables that physically go back to the SonicWALL applicance.  One to X1 for LAN and one to X3 for WLAN.  

The other items on your reply have already been dealt with in the very beginning - i.e. Spanning Tree.  None of my switches are Layer Three and I don't use any routers.  I use the SonicWALL other avilable ports to create subnets.

Also, the switches are not configured for VLAN's.  Other devices, like PC's and printers are connected to the same switch.  If you are in agreement that my configuration is OK, should I VLAN the access points? Benefits?
As long as your switches are not L3, then you should be ok.
Based on your description, it sounds like you have a fairly solid setup.

How is the cable run between buildings installed? Are you using outdoor rated wiring?

I am assuming there is only 1 switch in building 2? you stated it is a 2800 or a 2848.

Pretty safe to say that if your SonicPoints are powering up and connecting to your TZ210, then your switch is not blocking (SDP and SSPP) SonicWall's two proprietary protocols.
Cool.  The buidling are litterally attached.  I had professional conduit ran then contractor to run CAT6.  With slack on both ends the run is under 80 Feet.  

There is one switch in the main building and one switch in the new building.
Right on. Nice work!
Your electrical ground systems in the two facilities need to be bonded since you are bridging the two together with a non-current carrying conductor (the network cable).
Otherwise, you have a ground potential difference that can cause an uncontrolled discharge of energy across the network cable.
For small projects, it's cheaper to use a fiber converter at each end, and remove the copper conductor from the equation.  A metal conduit joining the two structures is going to introduce the same problem if there are two separate electrical systems.