Tweo terms are associated with frames entering or leaving an interface
- Ingress - entering the Interface
- Egress - exiting the interface A swtich forwards based on the ingress interface and the destonation MAC address. A switch uses its MAC address table to make forwarding decisions
Port Table
| Dest Address | Port |
|---|---|
| EE | 1 |
| AA | 2 |
| BA | 3 |
| EA | 4 |
| AC | 5 |
| AB | 6 |
Note: a switch will never allow traffic to be forwarded out the interface it recieved the traffic