nanog mailing list archives

Re: "Tactical" /24 announcements


From: Chris Cummings <chris () cummings tech>
Date: Mon, 9 Aug 2021 10:57:07 -0500

I prefer the approach of disaggregating only when needed, not as a
preventative measure. There are tools that can help with automating this
disaggregation (ARTEMIS can do this, for example).

—
Chris


On Mon, Aug 9, 2021 at 10:50 AM Billy Croan <BCroan () unrealservers net>
wrote:

How does the community feel about using /24 originations in BGP as a
tactical advantage against potential bgp hijackers?

All of our allocations are larger and those prefixes we announce for
clients as well usually are.  But we had a request recently to
originate everything as distinct /24 prefixes, to reduce the effect of
a potential bgp hijack.  It seemed a little bit like a tragedy of the
commons situation.

Is this seen as route table pollution, or a necessary evil in today's
world?
How many routers out there today would be affected if everyone did this?
Are there any big networks that drop or penalize announcements like this?


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