These boundaries turn local devices and users into participants in the larger Internet. They manage the transition between a relatively contained local population and the global routing environment, controlling who can enter, which addresses they use, and how traffic crosses the network edge.
Their repeated connection to larger networks is one of the main ways the Internet recursively grows from small networks into a global network-of-networks.
Sub-categories include:
1. Fixed Broadband Access Network
2. Mobile Carrier Network
3. Satellite Access Network
4. Community or Municipal Access Network
