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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: FW: /8s and filtering
> > >I was also curious about this - if I am a customer who wants to > >multihome and can justify only a /24, I would go to an ISP which has an > >allocation from the Class C space rather than one from the Class A > >space. > > It doesn't matter. For all practical purposes, basement multihomers > only > care that their two or three providers have their route. Maybe I'm missing something, but what good would it do for someone to multihome if only their own providers accept their route, but nobody else does? I realize that their block should be still announced with their ISP's larger aggregate, but what good does this do if your ISP goes down and can't announce the large aggregate. If you're a smaller organization, perhaps you'll only have a /23 from your upstream provider. With the filtering that seems to be in place, it seems like the only way you can truly multihome with a /23 is if it happens to be in the old Class C space. Or is this wrong? What seems to be needed is perhaps a /8 set aside by the RIR specifically to allocate to small organizations that wish to multihome that people would accept /24 and shorter from. Forrest
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