Route Origin Authorization or ROA is
a digital object that contains a list of
address prefixes and 1's number and it
is an authority created by a prefix
holder to authorize an air snubber to
originate one or more specific route
advertisements and you publish Aurora
using your registry member portal and
consult your registry for how to use
that member portal to publish the rowers
each registry has their own system their
own member portal and all process for
doing so a typical rule would look
something like a shown on the slide it
will contain the prefix the max length
and the origin is the prefix is the
address block or delegated address space
that needs to be signed the max length
is the smallest subnet of that address
prefix that is covered by the raw and
the origin is lists the autonomous
system that is originating this prefix
do note that there can be more than one
row per address block and this allows
the network operator to originate
prefixes from more than one AAS it
caters for changes in routing policy or
prefix origin and allows for multihoming
and other features.
© Produced by Philip Smith and the Network Startup Resource Center, through the University of Oregon.
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