= WiMAX Sites Connectivity = Each WiMAX site needs direct or indirect connectivity to one of the [http://www.internet2.edu/ion/ I2 ION points-of-presence] in order to fully particiapte in GENI operations. As shown on Figure 1, sites have the following options for connectivity: [[Image(GENI-WiMAX-Connectivity.jpg,width=600)]] 1. '''Direct connection to GENI backbone''': is the preferred method for connecting to [http://groups.geni.net/geni/wiki/ConnectivityHome GENI backbone]. 1. '''Kernel based L2TP connection through Rutgers''': is an overlay based solution for sites that don't have direct connectivity. It is based on [wiki:Connectivity/Kernel ip l2tp tunnels] over commodity Internet to externally visible endpoint at Rutgers/ORBIT site and, through it, to the [http://groups.geni.net/geni/wiki/ConnectivityHome GENI I2 backbone]. 1. '''vtund based L2TP connection through Rutgers (DEPRECATED)''': another [wiki:Connectivity/L2TP daemon (vtund) overlay based solution] for sites that don't have direct connectivity to I2.