Cisco Catalyst 4500 Series Configuration Manual page 826

Configuration Examples for Bidirectional Forwarding Detection
OurAddr
172.16.1.1
Session state is UP and using echo function with 50 ms interval.
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 1000000, Received Multiplier: 3
Holdown (hits): 3000(0), Hello (hits): 1000(317)
Rx Count: 305, Rx Interval (ms) min/max/avg: 1/1016/887 last: 448 ms ago
Tx Count: 319, Tx Interval (ms) min/max/avg: 1/1008/880 last: 532 ms ago
Registered protocols: EIGRP
Uptime: 00:04:30
Last packet: Version: 1
The output from the show bfd neighbors details command on SwitchB verifies that BFD sessions have
been created and that EIGRP is registered for BFD support. As previously noted, SwitchA runs BFD
Version 1, therefore echo mode is running, and SwitchC runs BFD Version 0, so echo mode does not run.
The relevant command output is shown in bold in the output.
SwitchB
SwitchB# show bfd neighbors details
OurAddr
172.16.1.2
Session state is UP and using echo function with 50 ms interval.
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 1000000, Received Multiplier: 3
Holdown (hits): 3000(0), Hello (hits): 1000(337)
Rx Count: 341, Rx Interval (ms) min/max/avg: 1/1008/882 last: 364 ms ago
Tx Count: 339, Tx Interval (ms) min/max/avg: 1/1016/886 last: 632 ms ago
Registered protocols: EIGRP
Uptime: 00:05:00
Last packet: Version: 1
OurAddr
172.16.1.2
Session state is UP and not using echo function.
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 50000, MinRxInt: 50000, Multiplier: 3
Received MinRxInt: 50000, Received Multiplier: 3
Holdown (hits): 150(0), Hello (hits): 50(5735)
Rx Count: 5731, Rx Interval (ms) min/max/avg: 32/72/49 last: 32 ms ago
Tx Count: 5740, Tx Interval (ms) min/max/avg: 40/64/50 last: 44 ms ago
Registered protocols: EIGRP
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
37-20
Poll bit: 0 - Final bit: 0
Multiplier: 3 - Length: 24
My Discr.: 3 - Your Discr.: 5
Min tx interval: 50000
Min Echo interval: 0
NeighAddr LD/RD RH/RS
172.16.1.2 6/1
- Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1 - Your Discr.: 6
Min tx interval: 1000000
Min Echo interval: 50000
NeighAddr LD/RD RH/RS
172.16.1.1 1/6
- Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
Multiplier: 3 - Length: 24
My Discr.: 6 - Your Discr.: 1
Min tx interval: 1000000
Min Echo interval: 50000
NeighAddr LD/RD RH/RS
3/6
172.16.1.3
Chapter 37 Configuring Bidirection Forwarding Detection
- Min rx interval: 50000
Holdown(mult) State
Up 0 (3 ) Up
- Min rx interval: 1000000
Holdown(mult) State
Up 0 (3 ) Up
- Min rx interval: 1000000
Holdown(mult) State
1(RH) 118 (3 ) Up
Int
Gi6/1
Int
Gi6/1
Int
Gi6/1
OL-25340-01