Reply about the failure to access the lab website outside China

Hello.

The campus network of the Software Institute and the campus network of Dalian University of Technology are exactly the same in terms of network hardware Topology Design and logic design. They all use the three-layer LAN design concept, in addition, the two networks are directly connected with 2G bare optical fiber cables, which is equivalent to directly connecting the network of the Software Institute to the education network of Dalian University of Technology.

All network resources of the Software Institute are provided by the network center of Dalian University of Technology and have the same access permissions to other building networks of the School Headquarters.

For Internet access. To solve the speed bottleneck between the education network and the public network, Dalian University of Technology rented a 200 MB network line to ensure the main external access work in the school. This line is mainly provided to the server cluster system and Virtual Server System of the network center Data Center (School Headquarters). The system loads the websites of various departments and applications requiring direct access to the Internet. The IP address segment is strictly controlled and its control is in the network center of Dalian University of Technology. The existing IP address segment of the Software Institute is not in this range.

Your website should now be mounted in the IP address segment of the Software Institute. The access speed to this IP address from the Internet is slow and the packet loss rate is high. To access the Internet, apply for a VM from the network center of Dalian University of Technology.

Liu Wenjie

2010.10.24