패킷 교환이 끝나면 모든 라우터는 이 두 네트워크에 효율적으로 도달할 수 있는 방법을 알게
된다.
R1
과
R4
가 서로에게 도달할 수 있는 ‘최적 경로’를 선택하는 것과 같은 사소한 세부 사항
이 남았다. 예를 들어
R2
와
R3
가
R1
에 등거리
equidistant
라고 하더라도
R4
는 이 중 하나를 최적
경로로 선택해야 한다. 그리고 나머지 경로를 최적 경로의 동일 비용 경로
equal
-
cost
path
(이 부분
은 경로 벡터 프로토콜에 따라 다르지만
BGP
에서는 이렇게 한다)로 설정해야 한다.
5.3.2 ...
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