bfd holdover-interval

Sets the time interval for which Open Shortest Path First (OSPF), Intermediate System to Intermediate System (IS-IS), or Border Gateway Protocol (BGP) routes are withdrawn after a Bidirectional Forwarding Detection (BFD) session is declared down.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

The BFD holdover interval is set to 0 by default.

Parameters

time: Specifies the BFD holdover interval in seconds. In BGP configuration mode, valid values range from 0 through 30 and the default is 0. In IS-IS router configuration mode, OSPF router VRF and OSPFv3 router VRF configuration mode, valid values range from 0 through 20 and the default is 0.

Modes

BGP configuration mode

IS-IS router configuration mode

OSPF router configuration mode

OSPFv3 router configuration mode

OSPF router VRF configuration mode

OSPFv3 router VRF configuration mode

Usage Guidelines

The BFD holdover interval is supported for both single-hop and multihop sessions.

In BGP configuration mode, use this command to set the BFD holdover interval globally for BGP. In OSPF router configuration mode or OSPF router VRF configuration mode, use this command to set the BFD holdover interval globally for OSPFv2. In OSPFv3 router or OSPFv3 router VRF configuration mode, use this command to set the BFD holdover interval globally for OSPFv3. In IS-IS router configuration mode, use this command to set the BFD holdover interval globally for IS-IS.

The IS-IS options are supported on the Extreme 8820, SLX 9740, SLX 9640, and SLX 9540devices only.

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

Examples

The following example sets the BFD holdover interval globally to 15 in BGP configuration mode.

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# bfd holdover-interval 15

The following example sets the BFD holdover interval globally to 12 in OSPF router configuration mode.

device# configure terminal
device(config)# router ospf
device(config-router-ospf-vrf-default-vrf)# bfd holdover-interval 12

The following example sets the BFD holdover interval globally to 20 in OSPFv3 router configuration mode.

device# configure terminal
device(config)# ipv6 router ospf
device(config-ipv6-router-ospf-vrf-default-vrf)# bfd holdover-interval 20

The following example sets the BFD holdover interval globally to12 in IS-IS router configuration mode.

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