ASON能快速地提供端到端连接，并能提供多种保护恢复机制，提高网络可靠性。
ASON can quickly provide end-to-end connection, and improve the network reliability by multiple protection and restoration.
鉴于同步数字体系SDH环形网络结构的巨大成功，WDM环形网络必定首先实用化、商用化，本文着重对各种保护恢复机制的自愈环网进行了分析与比较。
Whereas the vast success of SDH networks, it is WDM rings to be a fact firstly. Some kinds of WDMself-healing rings are discussed and compared.
传统的网络生存性包括保护和恢复两种机制，而恢复机制直接影响着网络失效以后其承载业务的可靠性。
The traditional network survivability includes protection and restoration mechanisms and the latter has direct effects on the reliability of the traffics on the failure of networks.
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