August 2021
Beginner to intermediate
564 pages
12h 2m
Korean
Content preview from 클라우드 네이티브를 위한 데이터 센터 네트워크 구축: 데이터 센터 네트워킹을 위한 아키텍처, 프로토콜, 도구
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127
5
장
라우팅 프로토콜 선택
좀 더 자세히 설명하면 라우팅은 다음 단계를 거친다.
1
.
다음 홉 엔트리 목록을 얻기 위해 라우팅 테이블에서 패킷의 목적지
IP
주소를 찾는다.
2
.
목록 중 하나의 다음 홉을 선정한다.
3
.
다음 홉의
MAC
주소를 획득한다.
4
.
패킷과 프레임 헤더를 갱신한다. 이때 목적지
MAC
주소와
IP
헤더의
TTL
을 다시 작성
한다.
5
.
선정된 다음 홉에 명시된 네트워크 인터페이스로 패킷을 내보낸다.
NOTE
_
IPv6
오늘날
IPv4
와
IPv6
는 상호 공존하며
IPv4
가 여전히 더 많이 사용된다. 이 둘이 라우팅을 다루는 방식은 유
사하다. 따라서 이 장에서 다루는
IPv4
예제들은
IPv6
에 유사한 방법으로 적용할 수 있다.
5.1.1
라우팅 테이블 룩업의 동작 방식
간략하게 라우팅 테이블은
IP
주소 프리픽스
address
prefix
를 키로,
다음 홉
next
hop
목록을 결과로 하
는 엔트리를 갖는다.
라우팅 테이블은 네트워크 내에 접근 가능한 모든
IP
주소를 엔트리로 갖지 않는다. 대신 주소
들을
서브넷
subnet
으로 그룹화한다. 서브넷은 동일한 개수의 가장 좌측 비트를 공유하는 주소들의
그룹이다. 공유되는 비트 수는
마스크 길이
mask
length
(오래된 다른 표기 방법으로는 공유 비트를
네트워크 마스크
network ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.