[AusNOG] Team Cymru BGP flap Q

[Mark Smith]

No.

On 29 May 2017 at 12:39, Dino Sosic <Dino.Sosic at datacom.com.au> wrote:
> Could this deliberate reset happen due to the large latency/RTT between the
> two speakers?
>
>
>
> From: Mark Newton [mailto:newton at atdot.dotat.org]
> Sent: Monday, 29 May 2017 12:08 PM
> To: Dino Sosic <Dino.Sosic at datacom.com.au>
> Cc: ausnog at lists.ausnog.net
> Subject: Re: [AusNOG] Team Cymru BGP flap Q
>
>
>
> Fiddling with timers won't change this: the message is "Peer closed the
> session" because "BGP Notification Received", so it's a deliberate reset
> that's coming from the other end, rather than a network failure.
>
>   - mark
>
>
>
> On 05/29/2017 12:26 PM, Dino Sosic wrote:
>
> Yes of course. I’ve shoot them an email. But they are not known to be the
> fastest guys, especially since it’s a free service. This was more of “does
> or did anyone else from AU have issues regarding this?” J
>
>
>
> Ta
>
> Dino
>
>
>
>
>
> From: Mark Newton [mailto:newton at atdot.dotat.org]
> Sent: Monday, 29 May 2017 10:19 AM
> To: Dino Sosic <Dino.Sosic at datacom.com.au>
> Cc: ausnog at lists.ausnog.net
> Subject: Re: [AusNOG] Team Cymru BGP flap Q
>
>
>
> 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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