North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Re: Connections among ASes
Thanks. Although they are not absolute cases, are they "typical" cases, i.e., do they apply to most of the cases? I know "typical" is not well defined, but I am kind of curious about the likelihood of the happening. A related question. Is there any sources I can look more about such issues? Chengchen 2007-11-29 ------------------------------------------------------------- From: Randy Bush Data: 2007-11-29 19:24:12 To: Chengchen Hu CC: nanog Subject: Re: Connections among ASes > 1) there is no such a direct link between two routers located in two > Internet eXchange Points-IXPs (even in same city) if they are from > different ASes. For example, a router A belongs to AS x located in > IXP1, and router B belongs to AS y located in IXP2, there is no link > between A and B. it is not safe to assume that routers A & B, each belonging to a different isp and each in a different colo in the same city are not otherwise interconnected. > 2) small AS will not use one router to connect to 2 different > providers in differnet IXPs. It is much cheaper using one router to > connect with different ASes in a same IXP. what if the two providers to which i want to connect are not at the same ix but i can get a cheap L2 transport to the second ix? randy
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