利用DWDM实现核心网络的光网络互联

光网络互联实现了综合ＩＰ、ＡＴＭ、ＳＯＮＥＴ／ＳＤＨ和ＤＷＤＭ技术的低成本网络。ＤＷＤＭ技术彻底改变了核心网络，在ＤＷＤＭ配置的第二阶段，ＩＰ路由器和ＡＴＭ设备直接连接到ＤＷＤＭ，省去了ＳＯＮＥＴ／ＤＳＨ和ＡＴＭ，降低了成本，简化了扩容。光网络互联多数利用了现有标准，但新技术、新网络元素的引入同多带来了互操作问题，因此必须建立开放的ＤＷＤＭ系统，这也将推动光网络互联标准的发展。

Implementation of Optical Core Network Interconnection with DWDM

Optical network interconnection enables low-cost networks integrating IP, ATM, SONET/ SDH and DWDM technologies.Due to eliminating SONET/SDH and ATM elements, and allowing direct connection with IP routers and ATM equipment in the second phase of configuration, DWDM can reduce network cost and simplifies network expansion.The introduction of new technologies and NEs has brought about interoperability issues, and it is necessary to set up open DWDM systems, which will promote the development of the optical network interconnection standards.