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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: About the address allocation convention between ISPs
Teng, You can also use whois to determin who owns the /30 between the hop in question. If ISPx comes up as the holder of the netblock in the registration then that traceroute result is comming from ISPx. Hopefully this helps! - Robert > -----Original Message----- > From: [email protected] [mailto:[email protected]]On Behalf Of > Teng Fei > Sent: Monday, June 02, 2003 9:11 PM > To: [email protected] > Subject: About the address allocation convention between ISPs > > > > Hello everyone, > > I have a question about the convention of address allocation between ISPs. > If a smaller ISP tries to establish connection with its provider, does > this small ISP configure one of the interface on its boarder router using > an IP address obtained from the provider, or it is the other way around, > that is, the provider uses one of the IP address belongs to the customer > to configure the provider's boarder router? > > I have this question because I am trying to identify the link between two > organizations from traceroute measurements. How the addresses are > allocated will affect the identification of the inter-domain link by > exactly one hop. > > I am not sure if there is such a convention at all, or the address > assignment is randomly decided according to the agreement between the > customer and the provider? > > Since I know there are many seasoned network professionals on this mailing > list, I think it might be a proper question to ask here. Would anyone > kindly be willing to share your experience? Thank you very much! > > Sincerely > > Teng > >
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