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I'm designing a network upgrade that includes 3 VLANs. 2 for wired and wireless trusted devices and a 3rd for untrusted public wireless devices. I'm new to VLANs and have researching enough to get the concept and create a design, but lack the experience to leverage for any of the finer details. <br />
See the attached layout - I'm working with SonicWall to determine whether their NSA policy-based routing will suffice for the needed routing to allow two of the VLANs to communicate. I'm curious if anyone has any experience to lend for how the switch is connected to the firewall. With the NSA series, each port can be configured to be used as needed and I'm particularly security conscious now that we will be using the same LAN for trusted and intrusted traffic.<br />
If anyone has an experience-based opinion or any potential &quot;gotchas&quot; for this type of design, I would be grateful for the input. Thanks-
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I'm designing a network upgrade that includes 3 VLANs. 2 for wired and wireless trusted devices and a 3rd for untrusted public wireless devices. I'm new to VLANs and have researching enough to get the concept and create a design, but lack the experience to leverage for any of the finer details. 
See the attached layout - I'm working with SonicWall to determine whether their NSA policy-based routing will suffice for the needed routing to allow two of the VLANs to communicate. I'm curious if anyone has any experience to lend for how the switch is connected to the firewall. With the NSA series, each port can be configured to be used as needed and I'm particularly security conscious now that we will be using the same LAN for trusted and intrusted traffic.
If anyone has an experience-based opinion or any potential "gotchas" for this type of design, I would be grateful for the input. Thanks-

Network Design with trusted and untrusted VLANs

Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.