Resent: Allocating a LIR an IP block per use
Berislav Todorovic beri at EU.net
Mon Dec 6 11:06:42 CET 1999
On Sun, 5 Dec 1999, samir Koleilat wrote: >> No you'r not the only one in this case, we have customers with AS >> number and we are ambarrassed they do not announce there IP because it's >> icluded in our total agregate IP space, we will be very happy to obtain >> 2 to 4 ( \23 or \22) for each of them according to there needs, maybe >> RIPE should help us to find a solution about this situation. Many small ISPs, sooner or later, want to become multi-homed and they meet with that problem. All of them usually want to run BGP even if they are assigned a small portion of address space. On the other hand, huge ISPs (e.g. Sprint) use to filter BGP announcements for prefix longer than a certain value (usually /19 or /20). Therefore, such multi-homed customers can have serious connectivity problems. The best approach for small BGP customers is to use NAT. See the slides on that at http://www.ietf.org/proceedings/98dec/slides/nat-multihome-98dec/. Regards, Beri -- ----- ___ Berislav Todorovic, Network Engineer ---- / / /____ ____ _/_ -- KPNQwest N.V. - IP NOC (formerly EUnet) --- /--- / // //___/ / --- Singel 540, 1017 AZ Amsterdam, NL -- /___ /___// //___ /_ ---- Phone: (+3120) 530-5333; Fax: (+3120) 622-4657 - --- Email: beri at EU.net
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