Overlay/Underlay Routing Issues in Wireless Mesh Networks

Recent analyses of the network traffic show that an ever growing portion of it is generated by user communities that share their own resources in a peer-to-peer fashion. Internet Service Providers' attitude towards peer-to-peer applications, so far, has been of considering them more as potential threats rather than as an opportunity and a customer demand to second. This is mostly due to the fact that peer-to-peer applications still represent a significant traffic engineering challenge for ISPs, since they tend to build their own overlays in a way that is largely independent of the Internet routing and topology.