i 目 录 1 RRPP ················································································································································· 1-1 1.1 RRPP简介 ········································································································································· 1-1 1.1.1 RRPP产生背景 ······················································································································· 1-1 1.1.2 RRPP基本概念 ······················································································································· 1-1 1.1.3 RRPP协议报文 ······················································································································· 1-3 1.1.4 RRPP定时器 ··························································································································· 1-4 1.1.5 RRPP运行机制 ······················································································································· 1-4 1.1.6 RRPP典型组网 ·············...