Are there "reserved" AS numbers, the same way there are reserved IP addresses for non-connected networks?
Yes there are. Something liek the top 1000 or so. I'll dig up the reference if you want.
Are As numbers considered scarce ? (I think of many small Internet providers asking for AS numbers just to peer BGP with more than one ISP).
About the same as IP numbers.
TIA -- ----------------------------------------------------------------------------- | Alexandre Leib Grojsgold | tel: + 55 21 542-2746 | | LABORATORIO NACIONAL DE COMPUTACAO CIENTIFICA | fax: + 55 21 295-8499 | | 22.290 Rio de Janeiro - RJ - Brasil | | -----------------------------------------------------------------------------
-- --bill