[AusNOG] Team Cymru BGP flap Q

[Mark Newton]

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 
> <mailto: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
>
>
>
> *Confidentiality and Privilege Notice*
>
> This document is intended solely for the named addressee. The 
> information contained in the pages is confidential and contains 
> legally privileged information. If you are not the addressee indicated 
> in this message or responsible for delivery of the message to such 
> person, you may not copy or deliver this message to anyone, and you 
> should destroy this message and kindly notify the sender by reply 
> email. Confidentiality and legal privilege are not waived or lost by 
> reason of mistaken delivery to you.
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ausnog.net/pipermail/ausnog/attachments/20170529/c0e9faa6/attachment.html>