Cisco IE 4000 Software Configuration Guide

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Configuring IP Unicast Routing
Configuring BFD
DETAILED STEPS
To disable HSRP support for BFD on all interfaces, enter the no standby bfd all-interfaces global configuration
command. To disable it on an interface, enter the no standby bfd interface configuration command.
Note: If you disable standby BFD on an interface by entering the no standby bfd interface configuration command, to
activate BFD sessions on other interfaces, you must disable and reenable it globally by entering the no standby bfd
all-interfaces global configuration command followed by the standby bfd all-interfaces global configuration command.
EXAMPLE
The following example shows how to reenable HSRP BFD peering if it has been disabled on a switch:
Switch(config)# standby bfd all-interfaces
Disabling BFD Echo Mode
When you configure a BFD session, BFD echo mode is enabled by default on BFD interfaces. You can disable echo mode
on an interface so it sends no echo packets and but only sends back echo packets received from a neighbor. When echo
mode is disabled, control packets are used to detect forwarding failures. You can configure slow timers to reduce the
frequency of BFD control packets.
BEFORE YOU BEGIN
Configure BFD parameters on the interface as described in the Configuring BFD Session Parameters on an Interface,
page 886.
Command Purpose
1. configure terminal Enter global configuration mode.
2. interface interface-id Specify an interface for a BFD session, and enter interface
configuration mode. Only physical interfaces support BFD.
3. ip address ip-address
subnet-mask
Configure the IP address and IP subnet mask for the interface.
4. standby [group-number] ip
[ip-address] [secondary]]
Activate HSRP.
5. standby bfd (Optional) Enable HSRP support for BFD on the interface.
6. exit Return to global configuration mode.
7. standby bfd all-interfaces (Optional) Enable HSRP support for BFD on all interfaces.
8. end Return to privileged EXEC mode.
9. show standby neighbors Verify your entries.
10. copy running-config
startup-config
(Optional) Save your entries in the configuration file.

Cisco IE 4000 Specifications

General

Product Type	Switch
Form Factor	DIN Rail Mountable
MAC Address Table Size	8000
Jumbo Frame Support	9216 bytes
Operating Temperature	-40°C to 70°C
Mean Time Between Failures (MTBF)	Over 500, 000 hours
Memory	256 MB DRAM
Mounting	DIN Rail, Wall
Certifications	EN 50121-4
Ports	8 x 10/100Base-TX Ethernet Ports