US Robotics USR2410 Manual de usuario descargar pdf (Pagina 35)

5.3

Click Modular Router Configuration Files

There were three different Click Modular Router configuration files used in this project,

corresponding to the three different hardware configurations presented in Chapter 3. The

configurations defined the actions of a packet forwarding router, a client gateway router, and an

Internet gateway router. The actions described in the packet forwarding router configuration are

also implemented in the other two configurations. The configurations have been broken down

into logical blocks. These blocks will be described in detail in section 5.3.4. The Click Modular

Router code is governed by a license, available in Appendix B. Complete diagrams showing how

all the elements are connected in the three configurations, along with the configuration files

themselves can also be found in Appendix B.

5.3.1

Packet Forwarding Router Configuration

This configuration file was very similar to the simple-dsdv.click sample configuration file

available with the Click Modular Router software package

. It was modified to suite the

application presented in this project. It expected the machine to have one wireless device.

Packets would be received on the D-Link DWL-AG530 device, and either kept if they were

addressed to the current router or forwarded to the appropriate router. If a packet was destined for

an outside network, it would be forwarded to the gateway router. The configuration can be broken

down into four main packet processing sections, as can be seen in Figure 5-2.

Figure 5-2: Block Diagram of Packet Forwarding Router Configuration

5.3.2

Client Gateway Router Configuration

This configuration expected the machine to have two devices, one of which should be the D-Link

DWL-AG530 card wireless device used to participate in the mesh network. The client device

Click Modular Router available at http://pdos.csail.mit.edu/click/

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US Robotics USR2410 Manual de usuario Pagina 35