| Typical
protocol interaction |
| App |
| App |
| : |
| : |
| Switch, router |
| Relay, bridge |
| Tran |
| Tran |
| Net |
| Net |
| Net |
| Link |
| Link |
| Link |
| Link |
| Link |
| Phy |
| Phy |
| Phy |
| Phy |
| Phy |
| Phy |
|
|
|
| End |
||
| node |
||
|
|
|
| End |
||
| node |
||
| Intermediate
nodes |