Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 422

Type of Interface Null interface Port Channel VLAN Possible Modes N/A Layer 2 Layer 3 Layer 2 Layer 3 Requires Creation No Yes Default State Enabled Shutdown (disabled) Yes, except for the default VLAN. No shutdown (active for Layer 2) Shutdown (disabled for Layer 3) Configuring Layer 2 (Data Link) Mode Do not configure switching or Layer 2 protocols such as spanning tree protocol (STP) on an interface unless the interface has been set to Layer 2 mode. To set Layer 2 data transmissions through an individual interface, use the following command. • Enable Layer 2 data transmissions through an individual interface. INTERFACE mode switchport Example of a Basic Layer 2 Interface Configuration Dell(conf-if)#show config ! interface Port-channel 1 no ip address switchport no shutdown Dell(conf-if)# Configuring Layer 2 (Interface) Mode To configure an interface in Layer 2 mode, use the following commands. • Enable the interface. INTERFACE mode no shutdown • Place the interface in Layer 2 (switching) mode. INTERFACE mode switchport For information about enabling and configuring the Spanning Tree Protocol, refer to Spanning Tree Protocol (STP). To view the interfaces in Layer 2 mode, use the show interfaces switchport command in EXEC mode. Configuring Layer 3 (Network) Mode When you assign an IP address to a physical interface, you place it in Layer 3 mode. To enable Layer 3 mode on an individual interface, use the following commands. In all interface types except VLANs, the shutdown command prevents all traffic from passing through the interface. In VLANs, the shutdown command prevents Layer Interfaces 422