BGP Support for Four-octet AS Number Space

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Document Type Expired Internet-Draft (idr WG)
Last updated 2011-07-11 (latest revision 2010-10-04)
Stream IETF
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Autonomous System (AS) number is encoded as a two-octet entity in the base BGP specification. This document describes extensions to BGP to carry the Autonomous System numbers as four-octet entities.


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