Reference Guide

Stack-unit interfaces support Layer 2 and Layer 3 traffic over the 10-Gigabit Ethernet , 25–Gigabit
Ethernet, 40–Gigabit Ethernet, 50–Gigabit Ethernet, and 100–Gigabit Ethernet interfaces. These
interfaces can also become part of virtual interfaces such as virtual local area networks (VLANs) or port
channels.
For more information about VLANs, refer to Bulk Configuration. For more information on port channels,
refer to Port Channel Interfaces.
Dell Networking OS Behavior: The system uses a single MAC address for all physical interfaces.
Configuration Task List for Physical Interfaces
By default, all interfaces are operationally disabled and traffic does not pass through them.
The following section includes information about optional configurations for physical interfaces:
• Overview of Layer Modes
• Configuring Layer 2 (Data Link) Mode
• Configuring Layer 2 (Interface) Mode
• Management Interfaces
• Clearing Interface Counters
Overview of Layer Modes
On all systems running Dell 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 38. Layer Modes
Type of Interface Possible Modes Requires Creation Default State
10 Gigabit Ethernet, 25–
Gigabit Ethernet, 40–
Gigabit Ethernet, 50–
Gigabit Ethernet, and
100–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 )
Interfaces
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