Developers Guide

In the Default VLAN, you cannot use the no untagged interface command. To remove an
untagged interface from all VLANs, including the Default VLAN, enter INTERFACE mode and use the
no switchport command.
Related
Commands
● interface vlan — configure a VLAN.
● tagged — specify which interfaces in a VLAN are tagged.
Far-End Failure Detection (FEFD)
The Dell EMC Networking operating software supports far-end failure detection (FEFD) on the Ethernet interfaces of the
platform.
The FEFD feature detects and reports far-end link failures.
● FEFD is not supported on the Management interface.
● During an RPM failover, FEFD is operationally disabled for approximately 8 to 10 seconds.
● By default, FEFD is disabled.
debug fefd
Enable debugging of FEFD.
Syntax
debug fefd {events | packets} [interface]
To disable debugging of FEFD, use the no debug fefd {events | packets} [interface]
command.
Parameters
events Enter the keyword events to enable debugging of FEFD state changes.
packets Enter the keyword packets to enable debugging of FEFD to view information on
packets sent and received.
interface (OPTIONAL) Enter the following keywords and the interface information:
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port/subport information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port information.
Command Modes EXEC Privilege
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100–ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
Layer 2 895