Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

Configuring BFD for OSPFv2 on a virtual interface by using IPv4 addressing

To configure BFD for OSPFv2 neighbors on a virtual interface (VIF), you must first configure the OSPF and VIF for the two neighbors.

Consider a scenario in which you have two systems, R1 and R2. R1 and R2 share an OSPFv2 session. R1 and R2 are on a physical interface named dp0s5 which also has a virtual interface configured for the VLAN identifier of vlan-51. The following list provides the addresses of R1 and R2.
  • R1 loopback address—1.1.1.1/32
  • Physical data plane address—dp0s5
  • Virtual link between R1 and R2—vif 51
  • VLAN identifier—vlan-51
  • R1 interface facing vif 51—10.1.1.1/24
  • R2 interface facing vif 51—10.1.1.2/24
  • R2 loopback address—2.2.2.2/32
Figure 1. Configuring BFD for OSPFv2 on a virtual interface by using IPv4 addressing

To configure a BFD session between R1 and R2, perform the following steps in configuration mode.

Table 1. Configuring BFD for OSPFv2 on a Virtual Interface by Using IPv4 Addressing
Router Step Command
R1 Create a BFD template called test. See section Configuring the BFD template.
R1 Associate the BFD test template with the interface
vyatta@R1# set interface dataplane vif 51 bfd template  test
R1 Register R2 as a BFD neighbor.
vyatta@R1# set interfaces dataplane dp0s4 vif 51 ip ospf fall-over bfd
R1 Commit the configuration.
vyatta@R1# commit
R1 Save the configuration.
vyatta@R1# save
R1 Display the configuration.
vyatta@R1# show interfaces
 interfaces {
          vif 51 {
             address 10.1.1.1/24
                   ip {
                     ospf {
                        fall-over {
                                   bfd
                                        }
                                }
                        }
                        vlan 51
                }
        }
        loopback lo {
                address 1.1.1.1/32
 }


vyatta@R1# show protocols
 protocols {
        bfd {
                destination 10.1.1.2 {
                        source 10.1.1.1 {
                                template test
                        }
                }
                template test{
		                            auth {
			                             simple {
				                                   key "*******"
                       }
                }
                minimum-rx 300
                minimum-tx 300
                multiplier 3
        }

        ospf {
                area 0 {
                        network 30.30.30.0/24
                }
                redistribute {
                        connected
                }
        }
 }


R2 Create a BFD template called test. See section Configuring the BFD template.
R2 Associate the BFD test template with the destination address of R1 and the source address of R2.
Note: You can also associate the BFD parameter template with the interface by using the set interface dataplane vif <vf_id> bfd template <template-name> command.
vyatta@R2# set protocols bfd destination 10.1.1.1 source 10.1.1.2 template test
R2 Register R1 as a BFD neighbor.
vyatta@R2# set interfaces  dataplane dp0s4 vif 51 ip ospf fall-over bfd
R2 Commit the configuration.
vyatta@R2# commit
R2 Save the configuration.
vyatta@R2# save
R2 Display the configuration.
vyatta@R2# show interfaces
 interfaces {
          vif 51 {
                address 10.1.1.2/24
                    ip {
                      ospf {
                          fall-over {
                                 bfd
                                }
                           }
                  }
                   vlan 51
                }
        }
        loopback lo {
                address 2.2.2.2/32
}
vyatta@R2# show protocols
 protocols {
        bfd {
                destination 10.1.1.1 {
                        source 10.1.1.2 {
                                template test
                        }
                }
                template test{
		                            auth {
			                             simple {
				                                   key "*******"
                       }
                }
                minimum-rx 300
                minimum-tx 300
                multiplier 3
        }

        ospf {
                area 0 {
                        network 30.30.30.0/24
                }
                redistribute {
                        connected
                }
        }
 }