VPN技术就是在数据传送过程中加上了加密和认证的网络安全技术。
The technology of VPN is the network security technology which is added encrypt and attestation in the process when the data is transmitted.
该算法直接利用前一周期的时延信息来更新路由表，以作为当前寻找路径的依据，在满足带宽和时延波动约束条件下，使数据传送过程时延最小化。
It can refresh the router table by the previous delay information to find a suitable path with the constraints of the bandwidth and the delay-jitter.
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