gateway
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... routing, and
are specifically applicable to protocols like EGP (Exterior Gateway
Protocol, now at historical status; see [EGP]), BGP ...
... Protocol, now at historical status; see [EGP]), BGP (Border Gateway
Protocol, the current de facto standard for inter-AS routing; see
...
... Autonomous System is a set of routers
under a single technical administration, using an interior gateway
protocol and common metrics to route packets within the AS, and
...
... route packets within the AS, and
using an exterior gateway protocol to route packets to other ASes.
...
... Since this classic definition was developed, it has become common
for a single AS to use several interior gateway protocols and
sometimes several sets of metrics within an AS. The use of the
...
... In routing terms, an AS will normally use one or more interior
gateway protocols (IGPs) when exchanging reachability information
...
... rent recommended exterior routing protocol is BGP, the Border
Gateway Protocol. However, the exchange of external routing
information alone does not constitute the need for an AS. See
...
... AS is only needed when you have a routing policy which is
different from that of your border gateway peers. Here routing
policy refers to how the rest of the Internet makes routing ...
... Rekhter, Y. and T. Li, "A Border Gateway Protocol 4 (BGP-4)", RFC 1654(-> 1771(-> 4271draft)), T.J. Watson Research Center, cisco Systems ...
... Mills, D., "Exterior Gateway Protocol Formal Specifications", STD 18, RFC 904hist, International Telegraph and Telephone ...