API Guide

fails, the backup port changes to the up state. If the primary later comes up, it becomes
the backup.
tengigabit Enter the keyword tengigabit if the backup port is a 10G port.
fortyGigE Enter the keyword fortyGigE if the backup port is a 40G port.
port-channel Enter the keywords port-channel if the backup port is a static or dynamic port
channel.
slot/port Specify the line card and port number of the backup port.
Defaults Disabled (The interface is in Layer 3 mode.)
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.5.1.0 Added support for 4-port 40G line cards on ExaScale.
8.4.1.0 Added support for port-channel interfaces (the port-channel number option).
8.3.7.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
7.7.1.0 Added the backup interface option.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.2.1.0 Introduced on the E-Series.
Usage Information
If an IP address or VRRP group is assigned to the interface, you cannot use the switchport command on the
interface. To use the switchport command on an interface, only the no ip address and no shutdown
statements must be listed in the show config output.
When you enter the switchport command, the interface is automatically added to the default VLAN.
To use the switchport backup interface command on a port, first enter the switchport command.
For more information, see the “Configuring Redundant Links” section in the “Layer 2” chapter of the
Dell
Networking OS Configuration Guide.
Related
Commands
interface port-channel — creates a port channel interface.
show interfaces switchport — displays information about switchport interfaces.
wavelength
Set the wavelength for tunable 10–Gigabit SFP+ optics.
Syntax
wavelength
To retain the existing wavelength, use the no wavelength command.
Defaults none
Command Modes INTERFACE
Interfaces 753