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North American Network Operators Group

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Re: Policy Statement on Address Space Allocations

  • From: Dave Siegel
  • Date: Tue Jan 30 18:17:07 1996

> > > 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?  ;-)

Yes, if you go down, or their line goes down to you, their multi-homing is
worthless.

Dave


-- 
Dave Siegel		     President, RTD Systems & Networking, Inc.
(520)623-9663		     Network Engineer -- Regional/National NSPs (Cisco)
dsiegel@rtd.com		     User Tracking & Acctg -- "Written by an ISP, 
http://www.rtd.com/~dsiegel/					for an ISP."




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