Great outage of 1997 - Does anyone recall?
ge at linuxbox.org
Sun Feb 22 01:57:44 CST 2009
What was that story with an African routes some years back, any
memories anyone? I am looking for a reference.
On Sun, 22 Feb 2009, Patrick W. Gilmore wrote:
> On Feb 22, 2009, at 1:47 AM, Randy Bush wrote:
>>>> Does anyone have the full story on this?
>> bottom line:
>> o do not redistribute bgp into igp
>> o do not redistribute dynamic igp into bgp
>> o filter your peers and customers
> And don't put all your most important infrastructure stuff (e.g. name server,
> mail server, shell host, etc.) in the first /24 of your /<shorter>
> The biggest problem with 7007 was not that it announced a bunch of prefixes.
> It is that 7007 announced _classful_ prefix (it had been filtered through
> RIP, remember?) with AS_PATH of ^7007$. This means if you had a
> 18.104.22.168/16, you saw 22.214.171.124/24 from 7007, which is more specific. Why
> this is bad is left as an exercise to the reader.
> And, of course, the problem persisted after the router in question was
> actually unplugged - not powered up or attached to any fibers/cables. Thank
> you Sprint for running beta code. :)
More information about the NANOG