Level3 routing issues

James Baldwin jbaldwin at antinode.net
Wed Jul 29 18:28:00 UTC 2015


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 at 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 nor
> 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 at nanog.org
> > wrote:
>
>> On Jul 28, 2015, at 8:54 PM, Matt Hoppes <mhoppes at indigowireless.com>
>> wrote:
>> >
>> > Is anyone seeing packet loss or routing issues on the Level3 network on
>> the east coast right now?
>> >
>> >
>>
>>
>> We’ve seen a slew of problems going west out of Level3 in NYC the 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
>>
>>
>>
>>
>>
>



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