Concept Guide
Conguration Task List for Physical Interfaces
By default, all interfaces are operationally disabled and trac does not pass through them.
The following section includes information about optional congurations for physical interfaces:
• Overview of Layer Modes
• Conguring Layer 2 (Data Link) Mode
• Conguring Layer 2 (Interface) Mode
• Management Interfaces
• Auto-Negotiation on Ethernet Interfaces
• Adjusting the Keepalive Timer
• Clearing Interface Counters
Overview of Layer Modes
On all systems running Dell EMC Networking OS, you can place physical interfaces, port channels, and VLANs in Layer 2 mode or Layer 3
mode.
By default, VLANs are in Layer 2 mode.
Table 26. Layer Modes
Type of Interface Possible Modes Requires Creation Default State
1 Gigabit Ethernet and 10 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 )
Conguring Layer 2 (Data Link) Mode
Do not congure 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
358
Interfaces