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Version Description
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 the E-Series.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre-6.2.1.1 Introduced on the E-Series.
Usage
Information
Untagged interfaces can only belong to one VLAN.
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 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE
then the slot/port[/subport] information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port/subport information.
● For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the
slot/port/subport information.
● For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then
the slot/port information.
Command Modes EXEC Privilege
926 Layer 2