bfd holdover-interval

Configures the time interval for which Border Gateway Protocol (BGP) or Open Shortest Path First (OSPF) routes are withdrawn after a Bidirectional Forwarding Detection (BFD) session is declared down.
Syntax
bfd holdover-interval time
no bfd holdover-interval time
Command Default

No holdover interval is configured.

Parameters
time
Specifies the BFD holdover interval in seconds. Valid values range from 3 through 150.
Modes

BGP configuration mode

BGP address-family IPv4 unicast VRF configuration mode

BGP address-family IPv6 unicast VRF configuration mode

OSPF router configuration mode

OSPF router VRF configuration mode

OSPFv3 router configuration mode

OSPFv3 router VRF configuration mode

Usage Guidelines

This command is supported for ICX 7850 devices only.

If the holdover timer is configured, a protocol is not immediately notified about a session down state. The protocol waits until the period of time configured for the holdover timer has expired. If BFD declares a session up before the configured period of time expires, the holdover timer is cancelled. If the session remains down and the holdover timer expires, the protocol is then notified about the session down state.

Use this command in BGP configuration mode to set the BFD holdover interval globally for BGP. Use this command in OSPF router configuration mode or OSPF router VRF configuration mode to set the BFD holdover interval globally for OSPFv2. Use this command in OSPFv3 router configuration mode or OSPFv3 router VRF configuration mode to set the BFD holdover interval globally for OSPFv3.

The no form of the command removes the configured BFD holdover interval from the configuration and reverts to the default value of 0 so that no holdover interval is configured.

Examples

The following example sets the BFD holdover interval globally to 12 seconds in BGP configuration mode. 

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# bfd holdover-interval 12

The following example sets the BFD holdover interval globally to 10 seconds in OSPF router configuration mode. 

device# configure terminal
device(config)# router ospf
device(config-ospf-router)# bfd holdover-interval 10

The following example sets the BFD holdover interval globally to 25 seconds in OSPFv3 router configuration mode. 

device# configure terminal
device(config)# ipv6 router ospf
device(config-ospf6-router)# bfd holdover-interval 25

The following example resets the holdover interval in BGP configuration mode so that no holdover is configured. 

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# no bfd holdover-interval
History
Release version Command history
08.0.90 This command was introduced.
Parent topic: Commands A and B