Configuring Interfaces for Layer 2 Mode
All interfaces on all switches that participate in spanning tree must be in Layer 2 mode and enabled.
Figure 130. Example of Configuring Interfaces for Layer 2 Mode
To configure and enable the interfaces for Layer 2, use the following command.
1
If the interface has been assigned an IP address, remove it.
INTERFACE mode
no ip address
2
Place the interface in Layer 2 mode.
INTERFACE
Spanning Tree Protocol (STP)
1076