PC-Telephone是一款多功能的网络电话,它能够把你的电脑变成一部电话、一台传真机、一个语音邮件和信息数据的传输系统。它不但提供了PCto PC、PC to Phone的网络通话功能,而且还提供了PC to Mobile Phone（移动电话）的通话功能。另外...PC-Telephone是一款多功能的网络电话,它能够把你的电脑变成一部电话、一台传真机、一个语音邮件和信息数据的传输系统。它不但提供了PCto PC、PC to Phone的网络通话功能,而且还提供了PC to Mobile Phone（移动电话）的通话功能。另外,它还能够做为一台很不错的电话应答机来使用。1 软件的下载与安装 PC-Telephone为共享软件,最新版本v3.2,文件大小为971kB。我们可以到软件的主页（http://www.pc-telephone.com/）去获取最新的版本,下载的是个可执行文件,直接运行该文件便可进入安装界面。安装完毕。展开更多
Network function virtualization is a new network concept that moves network functions from dedicated hardware to software-defined applications running on standard high volume severs. In order to accomplish network ser...Network function virtualization is a new network concept that moves network functions from dedicated hardware to software-defined applications running on standard high volume severs. In order to accomplish network services, traffic flows are usually processed by a list of network functions in sequence which is defined by service function chain. By incorporating network function virtualization in inter-data center(DC) network, we can use the network resources intelligently and deploy network services faster. However, orchestrating service function chains across multiple data centers will incur high deployment cost, including the inter-data center bandwidth cost, virtual network function cost and the intra-data center bandwidth cost. In this paper, we orchestrate SFCs across multiple data centers, with a goal to minimize the overall cost. An integer linear programming(ILP) model is formulated and we provide a meta-heuristic algorithm named GBAO which contains three modules to solve it. We implemented our algorithm in Python and performed side-by-side comparison with prior algorithms. Simulation results show that our proposed algorithm reduces the overall cost by at least 21.4% over the existing algorithms for accommodating the same service function chain requests.展开更多
文摘PC-Telephone是一款多功能的网络电话,它能够把你的电脑变成一部电话、一台传真机、一个语音邮件和信息数据的传输系统。它不但提供了PCto PC、PC to Phone的网络通话功能,而且还提供了PC to Mobile Phone（移动电话）的通话功能。另外,它还能够做为一台很不错的电话应答机来使用。1 软件的下载与安装 PC-Telephone为共享软件,最新版本v3.2,文件大小为971kB。我们可以到软件的主页（http://www.pc-telephone.com/）去获取最新的版本,下载的是个可执行文件,直接运行该文件便可进入安装界面。安装完毕。
基金supported by the National Natural Science Foundation of China(61501044)
文摘Network function virtualization is a new network concept that moves network functions from dedicated hardware to software-defined applications running on standard high volume severs. In order to accomplish network services, traffic flows are usually processed by a list of network functions in sequence which is defined by service function chain. By incorporating network function virtualization in inter-data center(DC) network, we can use the network resources intelligently and deploy network services faster. However, orchestrating service function chains across multiple data centers will incur high deployment cost, including the inter-data center bandwidth cost, virtual network function cost and the intra-data center bandwidth cost. In this paper, we orchestrate SFCs across multiple data centers, with a goal to minimize the overall cost. An integer linear programming(ILP) model is formulated and we provide a meta-heuristic algorithm named GBAO which contains three modules to solve it. We implemented our algorithm in Python and performed side-by-side comparison with prior algorithms. Simulation results show that our proposed algorithm reduces the overall cost by at least 21.4% over the existing algorithms for accommodating the same service function chain requests.
