Distributed zero-configuration routing stack Solution

Document directory

• Zero-configuration routing EZ2ROUTE Technology
• Enterprise Networking Solution

Looking back at the development process of the local area network, we have roughly gone through the following stages: the first stage is the router + bridge, the second stage is the central router + switch, and the third stage is the route switch + working group switch.

---- Although the supporters of the exchange technology always insist on pushing the router to the edge of the network, they cannot avoid the problem of subnet routing in the design of medium and large networks. Today's personal computers and workstations are greatly enhanced in processing power, and network applications are increasingly rich. The network bandwidth should be the most effective, and the network traffic should have the fastest path. According to the current popular LAN establishment mode, the routing design still has the following defects.

---- The network is composed of backbone switches with routing functions and working group switches. Node A and Node B are connected to the same workgroup switch. However, because A and B are in different subnets/VLANs, the communication between them must go through the core backbone switch. After layer-3 forwarding of the backbone switch, the communication between A and B can be completed. This not only loads local data traffic to the backbone network, but also all route information of the entire network must pass through the Central Route switch.

---- No wonder some network users simply select a network switch with the routing function. However, they encountered other difficulties, as shown in figure 2.

---- In this solution, communication between A and B, and between C and D does not need to go through the central switch. The load of the network backbone and the central switch is diverted. However, there are some other problems:

---- 1. There are multiple routing devices on the network. To achieve route load splitting, the network administrator must reschedule the route segmentation of the IP subnet;

---- 2. Route division of the IP subnet requires reconfiguration of the default routes of each node;

---- 3. The emergence of multiple routers brings about a lot of Routing Management Work;

---- 4. data packets are split/packaged twice, which affects the performance;

---- 5. Some switches allow configuring a load balancing mode for one hop, but occupy more IP addresses and increase network management problems;

---- 6. high cost.

Zero-configuration routing EZ2ROUTE Technology

　

---- Using the zero-configuration routing EZ2ROUTE Technology proposed by the Cajun series of longxun technology products, we can resolve the two conflicts, as shown in solution 3.

---- In this solution, the central switch provides the central routing capability, and each working group switch also provides the routing function, which features:

---- 1. nodes connected by the same working group switch, even in different subnets/VLANs, only need to go through the local working group switch to implement layer-3 and layer-2 exchanges;

---- 2. The whole network route only needs to be forwarded once;

---- 3. The Network Administrator only needs to configure the central switch;

---- 4. No routing configuration is required for workgroup switching;

---- 5. From the management perspective, the network has only one vro;

---- 6. From the traffic perspective, each vswitch has a routing function.

---- Of course, this is undoubtedly a very good solution for network administrators. The EZ2ROUTE vswitch provides all the routing functions, but does not have any management overhead related to the vro. It automatically adds Devices Based on ARP information, and does not require configuration, protocol, and route computing. It can also add or remove routers and subnets. In addition, you can use the RIP, OSPF, IGRP, VPN, VRRP, and HSRP protocols to identify routers (including aging ).

Enterprise Networking Solution

　

---- 1. Networking Solution for Small and Medium Enterprises

---- In this solution, Cajun P333R stack provides a backbone connection port with routing function (4 ). A switch radiating from the center. If local routing is required, the stack contains P333R. If local routing is not required, the stack only needs to be P333T and P333R can be added to future expansion, implement IP routing. For small network connections, you can use a standalone Working Group switch P120 to connect. Each connection can support two Gigabit link sets or two fiber-optic M link sets, or eight 100BaseT links.

---- This solution features the following features: because all the switches in the Working Group have 8 Gbps exchange capability, it is a networking solution with both economic and high performance. It solves the problem of IP subnet routing in the network, and provides distributed routing through the EZ2ROUTE mode, improving the routing performance. The P330 exchange device is an out-of-the-box product and is easy to install and manage. The edge P333R only needs to be set to EZ2ROUTE mode, and no route settings are required. The P330 stack allows hot swapping of all modules. The stack lines have redundancy capabilities. increasing or decreasing any switch will not affect the exchange between other switches in the stack. Network Management Agents are also hot backups of each other. In addition, the P330 device provides a variety of Fault Tolerance functions.

---- This solution has strong scalability. Each group of P330 devices can be stacked to 10 switching devices, and the port density can be expanded to 400 switching ports on each group of stacks, the layer-3 switching performance can reach 10 Mpps. It also supports new-generation network technologies, such as hardware QoS support and end-to-end features.

---- 2. Enterprise Network Solutions

---- In this solution, the modular switch Cajun P550R of longxun technology is used as the center of the network, and the second-level switch uses the P330 stack (as shown in Figure 5 ).

---- Features of the solution are as follows: the backbone switch has a 45.76Gbps exchange bus, and the second layer switch can reach 33 Mpps. The stack bus of the second-level switch can reach 8 Gbps. It is also a hardware distributed multi-layer switch solution. The third-layer forwarding capability of the backbone switch can reach 18 Mpps, and the second-level switch can provide 1 Mbit/s to local routes ~ Layer-3 switching capability of 10 mpps. The solution has high reliability and strong scalability. The backbone switch can be expanded to 24 Gigabit switching ports or 288 10/100 ports. The P550 module can also be used on a higher-level switch P880, providing up to 60 Gigabit switching ports. Each group of P330 devices can be stacked to 10 switching devices. The port density can be expanded to 400 10/100 switching ports for each group of stacks, and the layer-3 switching performance can reach 10 Mpps. The combination of P550 and P330 has an end-to-end feature.

---- 3. ATM Network Solution

---- In this solution, longxun technology A770 is used as the backbone network of the ATM (as shown in Figure 6), providing 622 Mbps and 155Mbps switching ports. Both P550 and P330 can provide ATM connection, routes are supported at the edge.

---- In addition to the features of the above scheme, the advantages of the ATM Backbone are as follows: the ATM backbone switch A770 can provide two 40 Gbps ATM Switching buses. The layer-3 forwarding capability of the backbone switch can reach 18 Mpps, And the level-2 switch can provide the layer-3 switching capability from 1 Mpps to 10 Mpps for local routes. This solution has high reliability. The A770 ATM switch has passed the telecom-grade NEBS third-level authentication. In addition, it has strong scalability. It can provide 210 155Mbps ports or 42 622MbpsATM switch ports and support up to 2.4 Gbps.

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Article entry: csh responsible editor: csh