For an X.25 PVC between two Passport 4400 units, an entry in the PVC definition table could be as follows:
Local Passport Unit
| Source Port | Source LCN | Destination Port | Destination LCN |
|---|---|---|---|
| IfIndex 51 (virtual port) | 1 | IfIndex 161 (physical port) | 1 |
Remote Passport Unit
| Source Port | Source LCN | Destination Port | Destination LCN |
|---|---|---|---|
| IfIndex 51 (virtual port) | 1 | IfIndex 161 (physical port) | 1 |
Each unit binds an LCN on a local physical port to an LCN on a virtual X.25 port connected to the remote unit. The following illustration shows the PVC setup (a PVC that connects a local physical port to a remote virtual port).
In the example shown above, LCN 1 on port IfIndex 159 (packet layer IfIndex 161) is bound to LCN 1 on virtual port 51 for both units. The devices attached to the physical ports of both units should expect the designated LCNs to be used as PVCs.
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