DELL S50V User Manual
184
|
Bidirectional Forwarding Detection
www.dell.com | support.dell.com
Changing OSPF session parameters
BFD sessions are configured with default intervals and a default role. The parameters that can be
configured are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and system role.
These parameters are configured for all OSPF sessions or all OSPF sessions on a particular interface; if
you change a parameter globally, the change affects all OSPF neighbors sessions. If you change a
parameter at interface level, the change affects all OSPF sessions on that interface.
configured are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and system role.
These parameters are configured for all OSPF sessions or all OSPF sessions on a particular interface; if
you change a parameter globally, the change affects all OSPF neighbors sessions. If you change a
parameter at interface level, the change affects all OSPF sessions on that interface.
To change parameters for all OSPF sessions:
To change parameters for OSPF sessions on an interface:
View session parameters using the command
show bfd neighbors detail
, as shown in
.
Disabling BFD for OSPF
If BFD is disabled globally, all sessions are torn down, and sessions on the remote system are placed in a
Down state. If BFD is disabled on an interface, sessions on the interface are torn down, and sessions on the
remote system are placed in a Down state (
Down state. If BFD is disabled on an interface, sessions on the interface are torn down, and sessions on the
remote system are placed in a Down state (
change in BFD clients; a final Admin Down packet is sent before the session is terminated.
To disable BFD sessions with all OSPF neighbors:
To disable BFD sessions with all OSPF neighbors out of an interface:
Step
Task
Command Syntax
Command Mode
1
Change parameters for OSPF
sessions.
sessions.
bfd all-neighbors interval milliseconds
min_rx milliseconds multiplier value role
[
active
|
passive
]
ROUTER-OSPF
Step
Task
Command Syntax
Command Mode
1
Change parameters for all OSPF
sessions on an interface.
sessions on an interface.
ip ospf bfd all-neighbors interval
milliseconds
milliseconds
min_rx milliseconds multiplier
value
role
[
active
|
passive
]
INTERFACE
Step
Task
Command Syntax
Command Mode
1
Disable BFD sessions with all OSPF
neighbors.
neighbors.
no bfd all-neighbors
ROUTER-OSPF
Step
Task
Command Syntax
Command Mode
1
Disable BFD sessions with all OSPF
neighbors out of an interface
neighbors out of an interface
ip ospf bfd all-neighbors disable
INTERFACE