Administrator Guide

Table 41. Layer Modes
Type of Interface Possible Modes Requires Creation Default State
10 Gigabit Ethernet and 40
Gigabit Ethernet
Layer 2
Layer 3
No Shutdown (disabled)
Management N/A No Shutdown (disabled)
Loopback Layer 3 Yes No shutdown (enabled)
Null interface N/A No Enabled
Port Channel
Layer 2
Layer 3
Yes Shutdown (disabled)
VLAN
Layer 2
Layer 3
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
DellEMC(conf-if)#show config
!
interface Port-channel 1
no ip address
switchport
no shutdown
DellEMC(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
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 3 traffic from
passing through the interface. Layer 2 traffic is unaffected by the shutdown command. One of the interfaces in the system must be in
Layer 3 mode before you configure or enter a Layer 3 protocol mode (for example, OSPF).
• Enable Layer 3 on an individual interface
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Interfaces