Cisco Catalyst 4500 Series - Page 1034

40-26
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 40 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