7RFC 3469. Framework for Multi-Protocol Label Switching(MPLS)-based Recovery [S]. IETF, February 2003.
8G. 7715. Architecture and Requirements for Routing in the Automatically Switched Optical Network [S]. ITU-T, June2002.
9Hong D W K, Hong C S, Yun D, et al. A hierarchical restoration scheme with dynamic adjustment of restoration scope in an MPLS network [A]. Network Operations and Management Symposium [C]. COEX Convention Center Seoul, Korea : IEEE/IFIP, 2004, 1: 191 - 204.
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