ipv6 route static bfd

Configures Bidirectional Forwarding Detection (BFD) session parameters for IPv6 static routes.

Syntax

ipv6 route static bfd dest-ipv6-address source-ipv6-address [ interface-type interface-name ] [ interval transmit-time min-rx receive-time multiplier number ]

no ipv6 route static bfd dest-ipv6-address source-ipv6-address [ interfacetype interface-name ]

no IPv6 route static bfd dest-ipv6-address source-ipv6-address [ interfacetype interface-name ] [ interval transmit-time min-rx receive-time multiplier number ]

Command Default

By default, BFD is not configured for an IPv6 static route.

Parameters

dest-ipv6-address: Specifies the IPv6 address of BFD neighbor.
source-ipv6-address: Specifies the source IPv6 address.
interface-type: The type of interface, such as Ethernet or Ve.
interface-name: The interface number or VLAN ID.
intervaltransmit-time: Specifies the interval, in milliseconds, a device waits to send a control packet to BFD peers. Valid values range from 50 through 30000. The default is 300 milliseconds.
min-rx receive-time: Specifies the interval, in milliseconds, a device waits to receive a control packet from BFD peers. Valid values range from 50 through 30000. The default is 300 milliseconds.
multiplier number: Specifies the number of consecutive BFD control packets that must be missed from a BFD peer before BFD determines that the connection to that peer is not operational. Valid values range from 3 through 50. The default is 3.

Modes

Global configuration mode

Address-family IPv6 unicast VRF configuration mode

Usage Guidelines

Use the no form of this command without the interval parameter to remove the configured BFD IPv6 static route.

Use the no form of this command with the interval parameter to revert the configured interval value to the default value.

The transmit-time and receive-time variables are the intervals needed by the local device. The actual values in use will be the negotiated values.

For single-hop static BFD sessions, the interval value is taken from the outgoing interface. For multi-hop BFD sessions, if the configured interval and min-rx parameters conflict with those of an existing session, the lower values are used.

For IPv6 static BFD sessions, if the BFD neighbor is link-local, the source IPv6 address must also be link-local.

If an IPv6 BFD session is running for a link-local BFD neighbor, the interface-type interface-name parameters are mandatory because the link-local address can be the same on multiple interfaces.

Examples

This example configures a BFD session on an IPv6 static route, specifying a VE interface.

device# configure terminal
device(config)# ipv6 route static bfd fe80::a fe80::b ve 20 interval 100 min-rx 100 multiplier 10

This example configures a BFD session on an IPv6 static route in a non-default VRF instance.

device# configure terminal
device(config)# vrf orange
device(config-vrf-orange)# address-family ipv6 unicast
device(vrf-ipv6-unicast)# ipv6 route static bfd fe70::a fe60::b ve 10 interval 1000 min-rx 2000 multiplier 20