Configuring Fefd; Important Points To Remember - Dell Force10 C150 Configuration Manual

5. If the FEFD system has been set to Aggressive mode and neighboring echoes are not received after
three intervals, the state changes to Err-disabled. All interfaces in the Err-disabled state must be
manually reset using the
globally or one interface at a time) before the FEFD enabled system can become operational again.
Table 25-1. State Changes When Configuring FEFD
Local Event
Shutdown
Shutdown
FEFD enable
FEFD enable
FEFD + FEFD disable
FEFD + FEFD disable
Link Failure
Link Failure

Important Points to Remember

• FEFD enabled ports are subject to an 8 to 10 second delay during an RPM failover before becoming
operational.
• FEFD can be enabled globally or on a per interface basis, interface FEFD configurations override
global FEFD configurations.
• FTOS supports FEFD on physical Ethernet interfaces only, excluding the management interface.

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
Report interval frequency and mode adjustments can be made by supplementing this command as well.
Step Task
1
Setup two or more connected
interfaces for Layer 2 or Layer 3 use
578 | Layer 2
[interface]
fefd reset
Mode Local State
Normal Admin Shutdown
Aggressive Admin Shutdown
Normal Bi-directional
Aggressive Bi-directional
Normal Locally disabled
Aggressive Locally disabled
Normal Unknown
Aggressive Err-disabled
Command Syntax
ip address ip
address
command in EXEC privilege mode (it can be done
Local
Admin
Remote State Status
Unknown Down
Err-disabled Up
Bi-directional Up
Bi-directional Up
Unknown Up
Err-disabled Up
Unknown Up
Err-disabled Up
fefd-global
Command Mode
INTERFACE
switchport
,
Local Remote Remote
Protocol Admin Protocol
Status Status Status
Down Up
Down Up
Up Up
Up Up
Down Up
Down Up
Down Up
Down Up
in CONFIGURATION mode.
Down
Down
Up
Up
Down
Down
Down
Down