Configuring Protocol Liveness; Troubleshooting Bfd - Dell Force10 C150 Configuration Manual

To disable BFD for a port-channel:
Step Task
1 Disable BFD for a port-channel.

Configuring Protocol Liveness

Protocol Liveness is a feature that notifies the BFD Manager when a client protocol is disabled. When a
client is disabled, all BFD sessions for that protocol are torn down. Neighbors on the remote system
receive an Admin Down control packet and are placed in the Down state
To enable Protocol Liveness:
Step Task
1 Enable Protocol Liveness

Troubleshooting BFD

Examine control packet field values using the command
handshake using this command.
Figure 9-29. debug bfd detail Command Output
R1(conf-if-gi-4/24)#00:54:38: %RPM0-P:RP2 %BFDMGR-1-BFD_STATE_CHANGE: Changed session state
to Down for neighbor 2.2.2.2 on interface Gi 4/24 (diag: 0)
00:54:38 : Sent packet for session with neighbor 2.2.2.2 on Gi 4/24
TX packet dump:
Version:1, Diag code:0, State:Down, Poll bit:0, Final bit:0, Demand bit:0
myDiscrim:4, yourDiscrim:0, minTx:1000000, minRx:1000000, multiplier:3, minEchoRx:0
00:54:38 : Received packet for session with neighbor 2.2.2.2 on Gi 4/24
RX packet dump:
Version:1, Diag code:0, State:Init, Poll bit:0, Final bit:0, Demand bit:0
myDiscrim:6, yourDiscrim:4, minTx:1000000, minRx:1000000, multiplier:3, minEchoRx:0
00:54:38: %RPM0-P:RP2 %BFDMGR-1-BFD_STATE_CHANGE: Changed session state to Up for neighbor
2.2.2.2 on interface Gi 4/24 (diag: 0)
Examine control packets in hexadecimal format using the command
Command Syntax Command Mode
no bfd enable
INTERFACE PORT-CHANNEL
(Message 3 on page
Command Syntax
bfd protocol-liveness
debug bfd detail
. Figure 9-29
debug bfd packet
Bidirectional Forwarding Detection | 203
179).
Command Mode
CONFIGURATION
shows a three-way
.