- network edge
Host, network application
- Access network, physical media
Wired or wireless communication link
- Network Core (Core Network):
Interconnected routers (or packet forwarding devices)
network of networks
1. Network edge
Host (end system):
- At the "edge of the network"
- Run web application
Client/server application model:
- The client sends a request and receives the server response
- Such as: web applications, file transfer FTP applications
Peer-to-peer (P2P) application model:
- No dedicated server
- Communication takes place between peer entities
2. Access to the network
Connect the network edge to the core network
- home access network
- Institutional access network
- mobile access network
Bandwidth (bps)
Access method
1. Digital Subscriber Line (DSL)
2. Cable network
Home network access:
Institutional access:
Wireless access network:
3. Network Core
Key functions at the core of the network: routing and forwarding
