Cisco Catalyst 4500 Series Administration Guide

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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)SG
OL_28731-01
Chapter 39 Configuring Bidirection Forwarding Detection
Configuration Examples for Bidirectional Forwarding Detection
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 50000, MinRxInt: 50000, Multiplier: 3
Received MinRxInt: 50000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 50(0)
Rx Count: 10138
Tx Count: 10139
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: BGP
Uptime: 00:07:22
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1 - Your Discr.: 1
Min tx interval: 50000 - Min rx interval: 50000
Min Echo interval: 0
The output of the show ip bgp neighbors command verifies that BFD has been enabled for the BGP
neighbors:
SwitchA
SwitchA# show ip bgp neighbors
BGP neighbor is 1.1.1.2, remote AS 45000, external link
Using BFD to detect fast fallover
..
SwitchB
SwitchB# show ip bgp neighbors
BGP neighbor is 1.1.1.1, remote AS 40000, external link
Using BFD to detect fast fallover
..
Example: Configuring BFD Support for Static Routing
In the following example, the network consists of SwitchA and SwitchB. Gigabit Ethernet interface 6/1
on SwitchA is connected to the same network as gigabit ethernet interface 6/1 on SwitchB. For the BFD
session to come up, SwitchB must be configured.
SwitchA
configure terminal
no switchport
interface Gigabit Ethernet 6/1
ip address 10.201.201.1 255.255.255.0
bfd interval 500 min_rx 500 multiplier 5
ip route static bfd Gigabit Ethernet 6/1 10.201.201.2
ip route 10.0.0.0 255.0.0.0 Gigabit Ethernet 6/1 10.201.201.2
SwitchB
configure terminal
no switchport
interface Gigabit Ethernet 6/1
ip address 10.201.201.2 255.255.255.0
bfd interval 500 min_rx 500 multiplier 5
ip route static bfd Gigabit Ethernet 6/1 10.201.201.1
ip route 10.1.1.1 255.255.255.255 Gigabit Ethernet 6/1 10.201.201.1

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E