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
!
Configuration for SwitchB
!
interface GigabitEthernet 6/1
no switchport
ip address 1.1.1.2 255.255.255.0
bfd interval 100 min_rx 100 multiplier 3
no bfd echo
router bgp 10
neighbor 1.1.1.1 remote-as 10
neighbor 1.1.1.1 fall-over bfd
!
The output from the show bfd neighbors details command from SwitchA verifies that a BFD session
has been created and that BGP is registered for BFD support. The relevant command output is shown in
bold.
SwitchA
SwitchA# show bfd neighbors details
IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
1.1.1.1 1/1 Up Up Gi3/2
Session state is UP and not using echo function.
Session Host: Hardware
OurAddr: 1.1.1.2
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: 8678
Tx Count: 8680
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: BGP
Uptime: 00:06:18
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 from the show bfd neighbors details command on SwitchB verifies that a BFD session has
been created:
SwitchB
SwitchB# attach 6
Switch> show bfd neighbors details
IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
1.1.1.2 1/1 Up Up Gi1/2
Session state is UP and not using echo function.
Session Host: Hardware
OurAddr: 1.1.1.1

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