Cisco Catalyst 4500 Series Configuration Manual page 832

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 50 min_rx 50 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 in the output..
SwitchA
SwitchA# show bfd neighbors details
IPv4 Sessions
NeighAddr
1.1.1.1
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:
Uptime: 00:06:18
Last packet: Version: 1
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
1.1.1.2
Session state is UP and not using echo function.
Session Host: Hardware
OurAddr: 1.1.1.1
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 50000, MinRxInt: 50000, Multiplier: 3
Received MinRxInt: 50000, Received Multiplier: 3
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
37-26
BGP
State bit: Up
Poll bit: 0
Multiplier: 3
My Discr.: 1
Min tx interval: 50000
Min Echo interval: 0
Chapter 37 Configuring Bidirection Forwarding Detection
LD/RD RH/RS
1/1 Up
- Diagnostic: 0
- Demand bit: 0
- Final bit: 0
- Length: 24
- Your Discr.: 1
- Min rx interval: 50000
LD/RD RH/RS
1/1 Up
State Int
Up Gi3/2
State Int
Up Gi1/2
OL-25340-01