Routers
Routers
APPLICATION
PRESENTATION
SESSION
TRANSPORT
NETWORK
DATA LINK
PHYSICAL
APPLICATION
PRESENTATION
SESSION
TRANSPORT
NETWORK
DATA LINK
PHYSICAL
Physical Medium
Physical Medium
Intermediate Device
- Network numbering, and subnet resolution
- Provides alternate routes for load management
- Adaptive failure resilience
- Supplied services
1
1
Peer Protocols
2
2
3
3