Scenarios for Microsoft Mesh:

The test-bed used for testing is as shown below:

TestBed

The above testbed shows the floorplan of our institution, VESIT. We have shown 4 Mesh Points (MPs). Of these MP1 and MP4 are fixed terminals while MP2 and MP3 are mobile terminals (laptops).

1.Packet Forwarding

Packet Forwarding
The above diagram shows Node A-D as MP1 to MP4. We note that Node B is in range of Node A and Node C and so on. The packets are forwarded from Node A to B to C to D. Refer to Screenshots in the following section.

2.Self healing Mesh Network

With respect to the Test Bed, we can see that MP2 (mobile) is shown twice. This is actually a representation of 2 different nodes that are helping in forwarding the nodes to MP4. Now in this scenario, when one of the nodes crash, the nodes MP3 and MP4 still receive the packets since now the packets are forwarded through the MP2 node which acted as a redundant link.

3.Gateway node

Any one of the node can act as a gateway node which is connected to the Internet. Now each of the nodes can access the Internet when Internet Connection Sharing is turned ON. The Proxy needs to be set on each of the other nodes wishing to connect to the Internet. We set the Proxy using the following settings – Go to Internet Explorer -> Tools -> Internet Options -> Connections (tab) -> LAN Settings. Here put the IP address of the node connected to the Internet and the port no to 80. Now the user can browse through the Internet.

Scenarios for Scenarios for Virtual Wi-Fi:

Virtual Wi-Fi

• Concurrent Connectivity

A user can connect her machine to an ad hoc network, while staying on her authorized infrastructure network. For example, consider the case where the students are connected to on existing college infrastructure network. Now the student wishes to use his personal Laptop to share files (presentations or assignments) with peers. With the help of Virtual Wi-Fi installed on Peers PC, the user is simultaneously connected to the laptop and also the infrastructure network.

• Network Elasticity

The range of an infrastructure network can be extended by allowing border nodes to act as relays for authorized nodes that are outside the range of the Access Point (AP). For example, a node X, associated to a home AP is being used to browse the web. Another node Y is moving while connected to the same AP and loses its connection because it goes out of range. With Virtual WiFi, if X is within range of Y, it can connect to Y over an ad hoc network, and forward Y’s traffic on to the AP.

• Gateway Node

A node that is part of a wireless ad hoc network and close to an AP, connected to the Internet, can become a gateway node for the ad hoc network. This node becomes a bridge for other nodes on the ad hoc network, passing their packets to and from the Internet.