Administrator Guide

To display information about the state of each interface, use the show fefd command in EXEC privilege mode.
DellEMC#show fefd
FEFD is globally 'ON', interval is 3 seconds, mode is 'Normal'.
INTERFACE MODE INTERVAL STATE
(second)
Gi 1/1 Normal 3 Bi-directional
Gi 1/2 Normal 3 Admin Shutdown
Gi 1/3 Normal 3 Admin Shutdown
Gi 1/4 Normal 3 Admin Shutdown
DellEMC#show run fefd
!
fefd-global mode normal
fefd-global interval 3
Enabling FEFD on an Interface
To enable, change, or disable FEFD on an interface, use the following commands.
• Enable FEFD on a per interface basis.
INTERFACE mode
fefd
• Change the FEFD mode.
INTERFACE mode
fefd [mode {aggressive | normal}]
• Disable FEFD protocol on one interface.
INTERFACE mode
fefd disable
Disabling an interface shuts down all protocols working on that interface’s connected line. It does not delete your previous FEFD
configuration which you can enable again at any time.
To set up and activate two or more connected interfaces, use the following commands.
1. Setup two or more connected interfaces for Layer 2 or Layer 3.
INTERFACE mode
ip address ip address, switchport
2. Activate the necessary ports administratively.
INTERFACE mode
no shutdown
3.
INTERFACE mode
fefd {disable | interval | mode}
DellEMC(conf-if-gi-1/1)#show config
!
interface GigabitEthernet 1/1
no ip address
switchport
fefd mode normal
no shutdown
DellEMC(conf-if-gi-1/1)#do show fefd | grep 1/1
Gi 1/1 Normal 3 Unknown
Debugging FEFD
To debug FEFD, use the first command. To provide output for each packet transmission over the FEFD enabled connection, use the
second command.
428
Layer 2