[182686] in North American Network Operators' Group
Re: Level3 routing issues
daemon@ATHENA.MIT.EDU (James Baldwin)
Wed Jul 29 14:30:22 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <CAFEgG3qZMiQ9gBPFHnyCBKqUMpO3g1pwYhN15oFSWpGt_N1uBA@mail.gmail.com>
Date: Wed, 29 Jul 2015 13:28:00 -0500
From: James Baldwin <jbaldwin@antinode.net>
To: Robert Blayzor <rblayzor.bulk@inoc.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Edit: It is interesting behavior in that new flows from the same source to
the same destination work are successful...
On Wed, Jul 29, 2015 at 1:27 PM, James Baldwin <jbaldwin@antinode.net>
wrote:
> Since 7:30AM CDT Friday morning, we've seen strange problems across L3
> where around 1-2% of traffic flows are dying. It is interesting behavior =
in
> that new flows from the same source to the same destination work, however=
,
> in the cases where the traffic is stopped we never receive the SYN-ACK no=
r
> any of the retransmits. The destination side continues to receive the SYN
> retransmits.
>
> On Wed, Jul 29, 2015 at 6:52 AM, Robert Blayzor via NANOG <nanog@nanog.or=
g
> > wrote:
>
>> On Jul 28, 2015, at 8:54 PM, Matt Hoppes <mhoppes@indigowireless.com>
>> wrote:
>> >
>> > Is anyone seeing packet loss or routing issues on the Level3 network o=
n
>> the east coast right now?
>> >
>> >
>>
>>
>> We=E2=80=99ve seen a slew of problems going west out of Level3 in NYC th=
e last
>> couple of nights. Last night was particularly bad to the point we had to
>> shut our Level3 BGP sessions down to route around the issue.
>>
>> --
>> Robert
>> inoc.net!rblayzor
>> Jabber: rblayzor.AT.inoc.net
>> PGP Key: 78BEDCE1 @ pgp.mit.edu
>>
>>
>>
>>
>>
>
