[AusNOG] Team Cymru BGP flap Q

[Mark Newton]

Have you thought about asking your peer?

  - mark


On May 29, 2017, at 8:37 AM, Dino Sosic <Dino.Sosic at datacom.com.au> wrote:
> 
> Hi,
>  
> Would anyone have any ideas why this BGP is flapping two or so times a day?
> 
> 1303812: May 28 2017 23:56:29 ACST: %BGP-5-NBR_RESET: Neighbor 38.229.66.20 reset (Peer closed the session)
> 1303813: May 28 2017 23:56:29 ACST: %BGP-5-ADJCHANGE: neighbor 38.229.66.20 vpn vrf internet Down Peer closed the session
> 1303814: May 28 2017 23:56:29 ACST: %BGP_SESSION-5-ADJCHANGE: neighbor 38.229.66.20 IPv4 Unicast vpn vrf internet topology base removed from session  Peer closed the session
> 1303815: May 28 2017 23:56:41 ACST: %BGP-5-ADJCHANGE: neighbor 38.229.66.20 vpn vrf internet Up 
> 1303816: May 28 2017 23:58:26 ACST: %BGP-3-NOTIFICATION: received from neighbor 38.229.66.20 4/0 (hold time expired) 0 bytes 
> 1303817: May 28 2017 23:58:26 ACST: %BGP-5-NBR_RESET: Neighbor 38.229.66.20 reset (BGP Notification received)
> 1303818: May 28 2017 23:58:26 ACST: %BGP-5-ADJCHANGE: neighbor 38.229.66.20 vpn vrf internet Down BGP Notification received
> 1303819: May 28 2017 23:58:26 ACST: %BGP_SESSION-5-ADJCHANGE: neighbor 38.229.66.20 IPv4 Unicast vpn vrf internet topology base removed from session  BGP Notification received
> 1303820: May 28 2017 23:58:39 ACST: %BGP-5-ADJCHANGE: neighbor 38.229.66.20 vpn vrf internet Up
>  
>  
> Nothing fancy in the config, just usual template peer-session and peer-policy. Anyone else having this issue? Platform is ASR1k running 03.14.01.S (15.5.1 S1). Latency to the peer is around 300 ms in average, due to it being in US. I did try different timers but it didn’t resolve the issue, just slowed it down. 
>  
> Cheers,
>  
> Dino
>  
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