Re: Level3 routing issues

[James Baldwin <jbaldwin () antinode net>]

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 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 () nanog org
> > 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 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