Clearing spanning tree-detected protocols

These commands force a spanning tree renegotiation with neighboring devices on either all interfaces or on a specified interface.

Restart the spanning tree migration process on all interfaces.
```
device# clear spanning-tree detected-protocols
```
Restart the spanning tree migration process on a specific Ethernet interface.
```
device# clear spanning-tree detected-protocols interface ethernet 0/3
```
Restart the spanning tree migration process on a specific port channel interface.
```
device# clear spanning-tree detected-protocols port-channel 12
```
Port channel interface numbers range from 1 through 64.