set protocols bfd multihop peer local-address minimum-ttl

The set protocols bfd multihop peer local-address minimum-ttl command configures the minimum expected TTL for an incoming BFD control packet for a multi-hop BFD session.

The delete protocols bfd multihop peer local-address minimum-ttl command sets the configuration to the default value.

Command Syntax

set protocols bfd multihop [vrf <vrf-name>] peer<peer-ip> local-address <local-ip> minimum-ttl <minimum-ttl>

Parameter

Parameter	Description
vrf <vrf-name>	Optional. Specifies a VRF name. The value is a string. It’s a user-defined VRF set by the command set ip vrf <vrf-name> [description <string>].
peer <peer-ip>	Specifies the peer for a BFD session. The value is an IPv4 or IPv6 address.
local-address <local-ip>	Specifies a local address used to send the packets. The value is an IPv4 or IPv6 address.
minimum-ttl <minimum-ttl>	Specifies the minimum expected TTL. Range: 1 to 254.

Usage Guidelines

This feature serves the purpose of thightening the packet validation requirements to avoid receiving BFD control packets from other sessions.

Note that: This feature is for multi-hop sessions only.

Example

Configure the minimum expected TTL to 252.

admin@Xorplus# set protocols bfd multihop peer 2.2.2.2 local-address 2.2.2.3 minimum-ttl 252
admin@Xorplus# commit