nanog mailing list archives

Re: Policy Statement on Address Space Allocations


From: Iljitsch van Beijnum <iljitsch () unix1 bart nl>
Date: Tue, 30 Jan 1996 11:39:15 +0100 (MET)

At 6:09 1/29/96, Alex.Bligh wrote:

Currently I have 2 choices as
far as I can make out, give them a bit of my /19, break up my
nice aggregate and ensure loads of extra announcements (and that
probably none of them get routed by anyone applying prefix based
filtering), or give them a new /19 all of their own (you've

Suppose you have a customer that needs a /22 and they want to go 
multi-homed. Suppose you give them that /22 out of your /19 or /16 you 
got from the RIPE NCC. So they announce their /22 to you and to their 
other provider. But you keep announcing your /19 or /16. So if anybody 
were to filter the /22 announcement, your customer only suffers partial 
loss of connectivity, since you are still announcing an aggregate of 
their announcemnt (your original /19 or /16).

Problem fixed. Anything else?  ;-)


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