Advertising rented IPv4 prefix from a different ASN.
nanog at stefan-neufeind.de
Fri Aug 5 13:41:59 UTC 2016
On 04.08.2016 21:39, Andrew wrote:
> Hello List,
> I work for a medium sized ISP. We are entering an agreement to rent
> some IPv4 space from a local higher education institution. Being a
> multi-homed ISP we would like to advertise the rented prefix from our
> ASN. The prefix that will be advertised is a smaller subnet from the
> higher educations block; they will continue to advertise the larger prefix.
> What is the best way to accomplish this? Is there any way of doing this
> without having to tunnel the traffic through the origin ASN?
> I feel if we just adverse the prefix it get put on a bogon list for
> prefix hijacking. This space is rented long term but they are not
> interested in reassigning the space to us. They also want to keep
> advertising their prefix as one contiguous block.
Make sure proper route-objects exist. Should be no big deal then imho.
Others do it as well - also advertising the larger block from one ASN
and a smaller portion of it from another.
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