Layer 1 Models
How hubs process frames
When a hub receives a frame (flowchart
If two or more ports receive frames at the same time, a collision occurs and
the hub forwards a jam signal to all ports.
If one port receives a frame, the hub forwards the frame to all ports except
the receiving port.
How repeaters process frames
When a repeater receives a frame:
The repeater forwards the frame to the other port.
How Wireless is modeled
Packet Tracer models only certain aspects of the wireless
- Wireless A, B, G, and N are supported.
- Infrastructure wireless mode is supported. Ad-hoc is not supported.
- Authentication methods are none and WEP. WEP requires a 10 digit hex key. The authentication method and configuration must match on both the wireless client and wireless server in order for them to be associated.
- An antenna's coverage area is set to a specific area and cannot be changed. The signal strength based on distance is not calculated modeling real physics.