Dual-line access scheme for Internet bar routers in Telecom Netcom

Routers in the Internet Café Network in the following specific circumstances:

1, large-scale, users, equipment uninterrupted operation, the general, the number of Internet cafes more than 100 units, more than hundreds of units, and operators to access bandwidth in many places are not small, need to be carefully used. There are games, browsing, chatting, video, downloading and so on inside the internet bar. In which the game packet is relatively small, so the need for a higher packet forwarding capabilities.

2, high stability requirements; The Internet café is a commercial operating environment that requires high stability.

3, line access and extended bandwidth. Due to the bandwidth limitations of ADSL access, some areas of Internet cafes require multiple line access, so also need to have load balancing and line redundancy backup capabilities.

4, network security requirements are high; Because each machine operator often changes, therefore, some attacks are unavoidable, access equipment needs to have a strong ability to fight, but also need data isolation function.

5, the device's port mirroring capabilities. According to the requirements of the public security departments, the Internet cafes have used public security monitoring system, the need to capture data from the network, and the number of switches, the probability of acquisition is poor, therefore, the implementation of port mirroring on the router is a simple and easy-to-use method.

6, the need for more strong management and monitoring functions. Internet users are not fixed, when there is a problem to find the problem, rather than the use of frequent restart of the device. The real-time network management and monitoring function of the equipment is very important to the healthy and stable operation.

I. Analysis of key needs

Internet users also applied for China Telecom and netcom two broadband access lines, at this time users want to achieve when the intranet users to visit the IP range of China Telecom, the internal network flow through the telecommunications lines outflow; When intranet users visit the IP range of China Netcom, the internal network flow through the Netcom line, That is, the telecom data flow to the telecommunications line, netcom data flow to go netcom line. And in one of the lines of failure can quickly transfer the traffic on the fault line to the normal line, in order to ensure the normal online network. And in the local specific circumstances, the telecom flow is greater than the netcom flow, so the network is more idle, but also some non-critical applications to the Netcom line.

Second, the realization steps:

1, according to the general configuration WAN1 and WAN2 two lines normal internet, the main line for the telecommunications line, backup lines for the Netcom line.

2, through the router's built-in dual-line policy settings, the dual-line policy settings for the policy route set to the Netcom routing table.

3. In the multi-line configuration policy, the line detection cycle is set to be detected once every 3 seconds.

4, in the application of policy configuration scheduling, some of the key applications, scheduling to the Netcom line, set to subnet all IP addresses, some applications, such as QQ, download, point to WAN2.

Third, the realization principle:

1, set up 1, 2 steps, at this time when the network traffic when access to netcom IP section of the total flow to the Netcom line. At this time when the internal network traffic has access to the needs of telecom IP segment, the flow of all flows to the telecommunications line, that is, realized: Telecom line to go Telecom, Netcom line Netcom. Because access to their own lines, are the backbone of their own operators to achieve the telecommunications game is not card, Netcom game is not the effect of cards.

2, the line detection cycle set to every 3 seconds to detect once, then the router built through the detection module, every 3 seconds will be two lines to detect, if found that one of the lines, then automatically send all the data to another line, so as to achieve the purpose of line backup, to ensure the normal operation of Internet cafes.

3, in the application of scheduling, will be insensitive to speed requirements of the application to the WAN2 line, routers receive these applications to access the network request, will automatically forward this request to the Netcom line, thus reducing the burden of the telecommunications line.

Iv. implementation of the programme

Test environment:

Users to apply for two fixed IP line access to the Internet, a telecommunications line, a netcom line. As follows:

Main Line: Telecommunication line:

IP Address: 218.66.66.66

Gateway: 218.66.66.1

Subnet Mask: 255.255.255.0

Backup line: Netcom line:

IP Address: 221.88.88.2

Gateway: 221.88.88.1

Subnet Mask: 255.255.255.0