Users Guide

To conrm that the interface is enabled, use the show config command in INTERFACE mode. To leave INTERFACE mode, use the
exit command or end command. You cannot delete a physical interface.
Physical Interfaces
The Management Ethernet interface is a single RJ-45 Fast Ethernet port on a switch.
The interface provides dedicated management access to the system.
Stack-unit interfaces support Layer 2 and Layer 3 trac over the 1-Gigabit Ethernet and 10-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 Conguration. 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.
Conguration Task List for Physical Interfaces
By default, all interfaces are operationally disabled and trac does not pass through them.
The following section includes information about optional congurations for physical interfaces:
• Overview of Layer Modes
• Conguring Layer 2 (Data Link) Mode
• Conguring 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 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 23. 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 )
Interfaces 301