BGP announcements and small providers

Karl Denninger karl at Mcs.Net
Wed Feb 26 21:10:15 UTC 1997

> At 02:31 PM 2/26/97 -0500, Bradley Dunn wrote:
> >On Wed, 26 Feb 1997, Lyndon Levesley wrote:
> >
> >>  Nameservers are a bit harder to renumber, but that's not too bad.
> >
> >When you have hundreds of virtual web sites?
> Uhm, sure.  Just slowly decrease the TTL on your name server until you are
> ready to renumber (and the TTL is set to something ridiculously low such as
> 1 minute).  The customers will then experience something like a 1 minute
> outage when you renumber.  If we are going to start getting into the
> procedures of HOW to renumber this should likely move to the PIER mailing
> list.  I think if in general people become more interested in HOW to
> gracefully renumber themselves and their customers instead of worrying
> about how hard it is to do they would see that while it is work, it isn't
> really all that hard.  
> Justin Newton				
> Network Architect					
> Erol's Internet Services
> ISP/C Director at Large

You're making lots of assumptions.

1)	That client DNS systems will actually honor such a TTL.  Many
	don't (claim they're broken all you want, but these are the facts).

2)	That client SOFTWARE will actually go back and ask again for the
	IP number.  Several won't (Netscrape being rumored to be one of
	them).  TTLs are irrelavent in that case.

Go ahead and try to tell your customer, who purchased web service from you,
that you have the right to disrupt their operations at any time and under
any pretense and see how many of them you have left.

Karl Denninger (karl at MCS.Net)| MCSNet - The Finest Internet Connectivity     | T1's from $600 monthly to FULL DS-3 Service
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