The response I got back was that this was impossible since ISPs require an announcement of the /16 the /19 would come from. I have done work with ISPs before (and have read the NANOG list for many years) but haven't heard of such a requirement nor can I find any standards that indicate the same thing.
Does anyone have requirements of a /19 announcement requires the /16 to be there as well? The company has plenty of /16s that it uses internally that are not being announced on the Internet at all.
The /19 is big enough to not get filtered by the majority. I don't know of any specific "rules" or "do's and don'ts" that prevents you from announcing such a space as long as you have a) permission from the /16 administrator (which you claim to have), b) non-private-AS number announcing it and perhaps c) register it in a popular IRR database (i.e. ALTDB, RADB). BGP advertisement really isn't a rocket science. What you announce and what the majority accepts is what the internet sees. -J
Thanks-
-Eric
-- James Jun TowardEX Technologies, Inc. Technical Lead Network Design, Consulting, IT Outsourcing james@towardex.com Boston-based Colocation & Bandwidth Services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net