Users Guide

Version Description
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 — congure a VLAN.
• tagged — specify which interfaces in a VLAN are tagged.
Far-End Failure Detection (FEFD)
The Dell 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 stack/slot/port/subport information.
• For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE then the
stack/slot/port/subport information.
•
For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the stack/
slot/port[/subport] information.
• For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the stack/
slot/port/subport information.
• For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then the
stack/slot/port information.
Command Modes EXEC Privilege
Layer 2 909