[129136] in North American Network Operators' Group
Re: Did your BGP crash today?
daemon@ATHENA.MIT.EDU (Christopher Morrow)
Fri Aug 27 16:11:42 2010
In-Reply-To: <73C4F36B-BD17-4343-B4A5-53169C04647D@gmail.com>
Date: Fri, 27 Aug 2010 16:11:32 -0400
From: Christopher Morrow <morrowc.lists@gmail.com>
To: Mike Gatti <ekim.ittag@gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Fri, Aug 27, 2010 at 4:07 PM, Mike Gatti <ekim.ittag@gmail.com> wrote:
> where's the change management process in all of this.
> basically now we are going to starting changing things that can
> potentially have an adverse affect on users without letting anyone know
> before hand .... Interesting concept.
you are running bgp, you are connected to the 'internet'... congrats
you are part of the experiment.
I suppose one view is that "at least it wasn't someone with ill
intent, or a misconfigured mikrotek!"
(you are asking your vendors to run full bit sweeps of each protocol
in a regimented manner checking for all possible edge cases and
properly handling them, right?)
-chris
> On Aug 27, 2010, at 3:33 PM, Dave Israel wrote:
>
>>
>> On 8/27/2010 3:22 PM, Jared Mauch wrote:
>>> When you are processing something, it's sometimes hard to tell if somet=
hing
>>> just was mis-parsed (as I think the case is here with the "missing-2-by=
tes")
>>> vs just getting garbage. =A0Perhaps there should be some way to "re-syn=
c" when
>>> you are having this problem, or a parallel "keepalive" path similar to
>>> MACA/MCAS/MIDCAS/TCAS between the devices to talk when something bad is
>>> happening.
>>
>> I know it wasn't there originally, and isn't mandatory now, but there is
>> an MD5 hash that can be added to the packet. =A0If the TCP hash checks
>> out, then you know the packet wasn't garbled, and just contained
>> information you didn't grok. =A0That seems like enough evidence to be ab=
le
>> to shrug and toss the packet without dropping the session.
>>
>> -Dave
>>
>>
>>
>
> =3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D
> Mike Gatti
> ekim.ittag@gmail.com
> =3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D
>
>
>
>
>
