[address-policy-wg] Allocation vs assignment question
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Gert Doering
gert at space.net
Mon Dec 4 12:19:38 CET 2006
Hi, On Mon, Dec 04, 2006 at 01:09:19PM +0200, Makc The Great wrote: > >On Mon, Dec 04, 2006 at 10:08:00AM +0200, Makc The Great wrote: > >> My question is am I correct in assuming that all "assigned" IPs are on > >> same physical network that all other IPs in their "sub-allocation" > >> range? > > > >Definitely not. > > So, if you have IP range A.B.C.* allocated to you, and assigns A.B.C.D > to someone else, A.B.C.D may be plugged in any switch on the internet, > not necessary yours? That's not what I said (and is a different conclusion from the original question). First, the entry in the RIPE Database does not necessary correlate to a physical "subnet" in the sense of "all these IP addresses are in a single LAN". Most of the time, this is not going to be the case - like "a company getting assigned a network of a given size, and using subnets out of that network for different purposes, like branch offices". Second, of course you need to make sure *routing* for the address ("A.B.C.D") works - so if you plug it in "anywhere", it will not work. Still, A.B.C.D *could* be "anywhere" - depending on the specific layout of the network in question. They could use A.B.C.* for VPN connections, and route the individual addresses via IPSEC tunnels to "anywhere". Summary: you cannot draw any definite conclusion about physical or geographic setup from the RIPE (or any other) database. Gert Doering -- NetMaster -- Total number of prefixes smaller than registry allocations: 98999 SpaceNet AG Mail: netmaster at Space.Net Joseph-Dollinger-Bogen 14 Tel : +49-89-32356-0 D- 80807 Muenchen Fax : +49-89-32356-234 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 305 bytes Desc: not available URL: <https://lists.ripe.net/ripe/mail/archives/address-policy-wg/attachments/20061204/fe29588c/attachment.sig>
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