Reference Guide

Layer 2 | 511
Configuring FEFD
You can configure FEFD for all interfaces from CONFIGURATION mode, or on individual interfaces
from INTERFACE mode.
Enable FEFD Globally
To enable FEFD globally on all interfaces enter the command fefd-global in CONFIGURATION mode.
Report interval frequency and mode adjustments can be made by supplementing this command as well.
Entering the
show fefd command in EXEC privilege mode displays information about the state of each
interface.
Figure 26-6. Show FEFD global outputs
Enable FEFD on an Interface
Entering the command fefd in INTERFACE mode enables FEFD on a per interface basis. To change the
FEFD mode, supplement the
fefd command in INTERFACE mode by entering the command fefd [mode
{
aggressive | normal}].
Step Task Command Syntax Command Mode
1 Setup two or more connected
interfaces for Layer 2 or Layer 3 use
ip address ip address,
switchport
INTERFACE
2 Activate the necessary ports
administratively
no shutdown INTERFACE
3 Enable fefd globally fefd {interval | mode} CONFIGURATION
FTOS#show fefd
FEFD is globally 'ON', interval is 3 seconds, mode is 'Normal'.
INTERFACE MODE INTERVAL STATE
(second)
Gi 1/0 Normal 3 Bi-directional
Gi 1/1 Normal 3 Admin Shutdown
Gi 1/2 Normal 3 Admin Shutdown
Gi 1/3 Normal 3 Admin Shutdown
FTOS#show run fefd
!
fefd-global mode normal
fefd-global interval 3