| ATM
routing/switching |
|
|
| Cell switching
is based on routing tables with VPI and VCI |
|
| entries. |
|
|
|
|
| End |
||
| user |
||
| ATM network |
|
|
| VPI c |
|
| VCI
e |
|
|
|
|
| End |
||
| user |
||
|
|
| VPI a |
|
| VCI
d |
|
|
|
| VPI b |
|
| VCI
d |
|
|
|
|
|
| In |
|||
| VPI
a |
|||
| VCI
d |
|||
|
|
|
|
| Out |
|||
| VPI
b |
|||
| VCI
d |
|||
|
|
|
|
| In |
|||
| VPI
b |
|||
| VCI
d |
|||
|
|
|
|
|
| Out |
||||
| VPI
c |
||||
| VCI
e |
||||
| switching at virtual path
level ... virtual channel level |