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18-4
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 18 SSO-BFD
Monitoring and Maintaining SSO-BFD
Monitoring and Maintaining SSO-BFD
The BFD packets are dropped if there is a problem on the link and the BFD signals its client. A
corresponding action occurs to bring down the feature. However, during a switchover, if the peer router
goes down, the router undergoing the switchover detects the failure when the CEF path comes up.
To monitor and maintain the SSO-BFD feature, enter any of the following commands in privileged
EXEC mode:
Configuration Examples of SSO-BFD
This section explains the following configuration examples:
• SSO-BFD with Static: Example, page 18-5
• SSO-BFD with BGP: Example, page 18-7
• SSO-BFD with EIGRP: Example, page 18-11
• SSO-BFD with ISIS: Example, page 18-14
• SSO-BFD with OSPF: Example, page 18-16
Note The following BFD timers are supported for the SSO-BFD feature:
• bfd interval 999 min_rx 999 multiplier 5
• bfd interval 999 min_rx 999 multiplier 6
• bfd interval 500 min_rx 500 multiplier 8
Note The [no] bfd echo command is configured to enable or disable the echo mode. When the echo mode is
enabled, the no ip redirect command must be configured under interfaces that are enabled with the BFD
protocol.
Command Purpose
Router# show enhanced-timers Displays status of the values set on the timers.
This command is used on the standby PRE.
Router# show bfd neighbour detail Displays complete details of the BFD neighbor
including the routing protocol registered with it.
This command is used on the active PRE.
Router# debug bfd ha Displays logs specific to the BFD HA process.
The command can also be used to check whether
there is a failure in transmission of BFD packets
during a switchover causing the peer router to
detect a failure. This command can be enabled on
the standby PRE also.
Router# debug bfd event Checks for packets received or lost from the
router undergoing a switchover.
Router# debug bfd packet Checks whether the router undergoing a
switchover failed to transmit BFD packets.