Users Guide

Example of the show interfaces status Command to View Link Status
NOTE: The show interfaces status command displays link status, but not administrative status. For
both link and administrative status, use the show ip interface command.
In the previous example, several ports display “Auto” in the Speed field. In the following example, the speed of
port 1/1 is set to 100Mb and then its auto-negotiation is disabled.
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
• Auto-Negotiation on Ethernet Interfaces
• Clearing Interface Counters
Overview of Layer Modes
On the 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 36. 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)
PE Gigabit Ethernet Layer 2 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 505