When you have a duplex mismatch between a server and a switch or a workstation and a switch you will only see problems in either the upload or the download, but not both. This table shows where you will see the extreme network latency when there is a duplex mismatch.
| PC | Switch-PC | Switch-Server | Server | Upload | Download | |
|---|---|---|---|---|---|---|
| Full | Full | Full | Full | Fast | Fast | |
| Full | Full | Half | Full | Slow | Fast | |
| Full | Full | Full | Half | Fast | Slow | |
| Full | Half | Full | Full | Fast | Slow | |
| Half | Full | Full | Full | Slow | Fast | |
| Full | Full | Half | Half | Fast | Fast |