Khing,
Also known as "inconsistent-as", it is often used by organizations that do
not want to obtain their own AS and multi-home properly. Instead, they have
their prefixes advertised by multiple upstream providers with the upstream
providers as originating. The clearest reference for not doing it is RFC
1930 / BCP 6
http://asg.web.cmu.edu/rfc/rfc1930.html
http://www.ietf.org/rfc/rfc1930.txt?number=1930
> -----Original Message-----
> From: Khing Maung [mailto:khing_m@yahoo.com]
> Sent: Wednesday, October 31, 2001 9:33 PM
> To: cisco-nsp@puck.nether.net
> Subject: [nsp] BGP Routing
>
>
> Hello All,
>
> I have some confusions about One prefix, one origin
> AS.
> What I would like to know is that is it possible to
> advertise same prefix from two different origin-ASes
> or two different origins for a prefix is an "illegal
> configuration"?Some one told me that it is a common
> configuration and there is nothing wrong with it.But I
> am doubtful about this.
>
> Any comments?
>
> Regards,
> Khing
>
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