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BFD on ipv4 BGP Session does not works

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  • 1.  BFD on ipv4 BGP Session does not works

    Posted 01-27-2020 00:42
      |   view attached

    Hey Guys,

     

    i have some strange Problems with BFD that works fine on ipv6 but not on ipv4

    BFD Log is attached.

     

    show bfd session address XX.228.130.230 extensive
                                                      Detect   Transmit
    Address                  State     Interface      Time     Interval  Multiplier
    XX.228.130.230           Init      xe-1/1/3.0     8.000     2.000        4
     Client BGP, TX interval 0.300, RX interval 0.300
     Local diagnostic AdminDown, remote diagnostic None
     Remote state Down, version 1
     Replicated
     Session type: Single hop BFD
     Min async interval 0.300, min slow interval 2.000
     Adaptive async TX interval 2.000, RX interval 2.000
     Local min TX interval 2.000, minimum RX interval 0.300, multiplier 4
     Remote min TX interval 1.000, min RX interval 1.000, multiplier 4
     Local discriminator 18, remote discriminator 16
     Echo mode disabled/inactive, no-absorb, no-refresh
     Remote is control-plane independent
      Session ID: 0x252
    
    1 sessions, 1 clients
    Cumulative transmit rate 0.5 pps, cumulative receive rate 0.5 pps
    
    

    Config:

     

     

    show interfaces xe-1/1/3
    description XX;
    mtu 9000;
    unit 0 {
        family inet {
            address XX.228.130.229/30 {
            }
        }
        family inet6 {
            address XXXX:1c0:915::1/124;
        }
    }
    
    
     show protocols bgp
    group XXX_v4 { type external; traceoptions { file bgp-bfd; flag bfd detail; } local-address XX.228.130.229; log-updown; import from-ASXXXXX; export to-ASXXXXX; peer-as XXXXXX; bfd-liveness-detection { minimum-interval 300; multiplier 4; session-mode single-hop; } neighbor XX.228.130.230; } group XXX_v6 { type external; local-address XXXX:1c0:915::1; log-updown; import from-ASXXXXX_v6; export to-ASXXXXX_v6; peer-as XXXXX; bfd-liveness-detection { minimum-interval 300; multiplier 4; } neighbor XXXX:1c0:915::2; } [edit]

     

     

    Attachment(s)

    txt
    BFD_log.txt   84K 1 version


  • 2.  RE: BFD on ipv4 BGP Session does not works
    Best Answer

     
    Posted 01-27-2020 01:35

    Hello Kev,

     

    what is the other device and how is it configured? Is there any lo0 family inet firewall filter configured which could drop BFD packets?



  • 3.  RE: BFD on ipv4 BGP Session does not works

    Posted 01-27-2020 03:05

    Solved: one direction was still filtering BFD traffic on peer device.

    Thank you.



  • 4.  RE: BFD on ipv4 BGP Session does not works

     
    Posted 01-27-2020 03:11

    Hello Kev,

     

    I'm happy that I was able to help you. Please mark my post als "Accepted Solution", so that others can find the solution to this quickly. A Kudo is always appreciated as well.