It is inside large-scaleI Pnetworkof Internet and the like, & uses the number which identifiesthe network(AS) which becomes independent. With the number whichit is managed& is issued by NIC of each country, in JPNIC has done management issue.
AS number is the number of one way in the entire world. it is displayed, has the number space up to 0 -65535. The among 0 of these and 65535is reservedby ICANN, 64512 - 65534 is made private AS number. Private AS number is not unique in the entire world,insideAS andisthe AS number which can be usedwithonly the network which is not connected to Internet.
AS numberis allotted only vis-a-vis AS which can exchange the information ofpath controlwith other AS making use of BGP (Border Gateway Protocol). Whennew AS you connectinonly one existing AS and the like, because if it is not necessary to exchange the information of path control andnew AS may be incorporatedinto existing AS, AS number is not allotted. ... The continuation is read As for AS where it can allotASnumber,there is manya thing which isthe network whichISP possesses, but when it is scientific type network and data centersuch to, it is.
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