Dell Force10 C150 Configuration Manual page 184

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.
To change parameters for all OSPF sessions:
Step Task
1 Change parameters for OSPF
sessions.
To change parameters for OSPF sessions on an interface:
Step Task
1 Change parameters for all OSPF
sessions on an interface.
View session parameters using the command
page 179.
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
change in BFD clients; a final Admin Down packet is sent before the session is terminated.
To disable BFD sessions with all OSPF neighbors:
Step Task
1 Disable BFD sessions with all OSPF
neighbors.
To disable BFD sessions with all OSPF neighbors out of an interface:
Step Task
1 Disable BFD sessions with all OSPF
neighbors out of an interface
184 | Bidirectional Forwarding Detection
Command Syntax
bfd all-neighbors interval milliseconds
min_rx milliseconds multiplier value role
active passive
[ | ]
Command Syntax
ip ospf bfd all-neighbors interval
milliseconds min_rx milliseconds multiplier
value role active passive
[ |
show bfd neighbors detail
(Message 3 on page 179). Disabling BFD does not trigger a
Command Syntax
no bfd all-neighbors
Command Syntax
ip ospf bfd all-neighbors disable
Command Mode
ROUTER-OSPF
Command Mode
INTERFACE
]
, as shown in Figure 9-8 on
Command Mode
ROUTER-OSPF
Command Mode
INTERFACE