Comprehensive Explanation of Access Router selection methods

With the development of routing technology, common routing cannot meet the needs of some enterprises. As one of the mainstream routing technologies, access routers play a more important role. This is a small and medium-sized network with a small number of users. We need to solve the problem of how to meet the user's needs with appropriate products.

With the advent of the Internet era, setting up an internal LAN alone cannot meet the work needs of many enterprises. More users need to publish information on the Internet or perform information retrieval, connecting an enterprise intranet to the Internet is one of the most common tasks in system integration. The current virtual environment is a common environment. The reason for setting such a typical environment is that this is an important growth point of current network construction: Small and Medium Enterprise Networks.

We all know that Internet is the world's largest international computer wide area network. It contains different LAN types. There are many methods for LAN Access to Wan, such as common dialing, satellite lines, and digital networks. When the computer LAN and WAN need to be interconnected through digital data communication networks such as DDN, X.25, ISDN, and frame relay, access routers are usually used. The Access Router is one of the most important network interconnection devices. It works at the network layer and is used to interconnect different types of networks. The biggest feature of the Access Router interconnection network is: each interconnect subnet remains independent. Each subnet can adopt different topologies, transmission media, and network protocols. The network structure is hierarchical. A router is used to select a route for data exchange between the source node and the target node. It provides various network protocols. The functions of a router are as follows: (1) network interconnection, the Access Router supports various LAN and WAN interfaces, which are mainly used to interconnect LAN and WAN. (2) Data processing, provides functions including grouping filtering, grouping and forwarding, priority, multiplexing, encryption, compression, and firewall. (3) network management, the Access Router provides functions such as configuration management, performance management, fault tolerance management, and traffic control.

In the past, most enterprises used to build their own internal computer networks to improve work efficiency and work with different departments. However, with the rapid development of Internet, more and more people are paying attention to the wide area network connected to or built by enterprises. As a result, the usage frequency of the Access Router is rapidly increased.

There are many manufacturers producing access routers. This market used to be dominated by foreign brands, such as Cisco, 3Com, Cabletron, and Nortel Networks. Nowadays, with the advent of the Internet era, many domestic manufacturers have begun to launch their own brand network products in the market of computer networks with unlimited potential. From low-tech products to high-tech products, domestic companies have made unremitting efforts to prove their strength, we are delighted to see the emergence of vro products of Huawei, Lenovo, Shida and other brands in the market.

Cisco Systems is the leader in router technology. Most of the data flowing over the Internet is sent through Cisco devices, most of which are Cisco routers. It can be said that the Internet has made Cisco brilliant. There are multiple series of Cisco access routers. We recommend that you use Cisco 1600 series access routers in this article. Cisco 1600 series access routers are customized by Cisco for Small and Medium-sized networks to access the Internet and are ideal for small and medium-sized enterprises. This is because in addition to a fixed Wan port and a fixed Ethernet port, the Cisco 1600 series also supports a WAN interface card that allows you to add or change WAN ports as needed, it is flexible and provides investment protection. The Cisco 1601 R-1604 R router has an Ethernet port, a built-in Wan port, and a slot for the optional auxiliary Wan port. The 1605 R Access Router has two ethernet ports and one Wan slot. All models have an optional Cisco IOS Firewall feature set. It is worth mentioning that the 1600 series supports DDR on-demand dialing technology for ISDN lines. Only when valid data transmission is available, the dial-up connection is enabled and the connection is automatically disconnected when no data transmission is available within the specified time, reduce Line costs. This fully meets the needs of the current virtual scenario. In addition, the 1600 NAT technology enables 200 users on the LAN to access the Internet at the same time. The firewall function built on IOS can protect the internal network, it also saves users' investment in security.

Features and competitive advantages of the 1600 series solution: Support for Cisco IOS software; flash memory (PC Card) and memory update features, thus facilitating software maintenance. In addition, Cisco provides the configuration Access Router network tool required for installation for free. It is equipped with a graphical interface Cisco ConfigMaker to simplify device configuration and management. Cisco products use the FastStep Configuration Utility (GUI-based) simplified installation and fault diagnosis; modular architecture for investment protection; complete IOS support, Cisco industrial standard network solutions; industrial standard IOS support for a variety of service quality; the interface card is compatible with the 2600,360 0 series for convenience and flexibility.

Since its entry into the field of data communication, Huawei has launched a full range of Access Router products. Huawei Technology Co., Ltd. takes the core network technology of Huawei's own brand as the leader and continues to grow and grow, has created an outstanding full range of network products today. Among them, the Quidway R1602 router meets the needs of this period and is a product for small and medium-sized enterprises. The R1602 interface is rich and flexible, with strong packet processing capabilities and simple configuration and maintenance. Quidway R1602 Access Router has a RJ-45 Ethernet interface, two same/asynchronous serial port, a backup port. Users can flexibly select networking solutions in various WAN technologies such as PSTN/ISDN, Frame Relay, X.25, and DDN, which is suitable for current backup line requirements; in addition, it has powerful packet processing capabilities. By adopting advanced CPU technology, efficient real-time multi-task operating system and unique software design, it makes the Access Router's packet processing capabilities very powerful; r1602 the Access Router adopts a network management system that complies with international standards: the network management system of the Access Router, complies with international SNMP standards, and complies with the unified network management platform developed by Huawei to facilitate centralized network management; in addition, the command line user interface provided by the router is configured in both Chinese and English. Following the popular router configuration methods in the industry, you can configure this product without special training, the Chinese prompt and help information will greatly facilitate domestic users. In addition, R1602 provides a wide range of network security features, such as firewall, packet filtering, address conversion, AAA, and Radius, users can select different security policies to build enterprise networks. R1602 adopts the backup center technology and significantly increases Network Reliability: the features of synchronous or asynchronous interfaces can be used to implement The current dial-up line backs up the leased line to ensure high-reliability network requirements.

According to the requirements of this scenario, you can also choose Lenovo's LR-2501 router. The LR-2501 router has 1 10 m lan (LAN) Port, 2 WAN ports and 1 Console port. Therefore, the features of the backup line are met in this scenario. Wan interfaces support Frame Relay, X.25, PPP, HDLC, and other Wan protocols, provide transmission rates up to T1/E1, and provide network address translation (NAT) functions. Supports PAD (X.3, X.28, and X.29) protocols and provides password protection.

Based on this network application scenario, you can select the 3Com OfficeConnect NETBuilder Access Router, which is one of the most widely used models. OfficeConnect NETBuilder has a 10 BASE-T lanport (LAN port) and two WAN ports (WAN port ). Each module has a Flex WAN serial port that supports up to 2.048 Mbps (T1/E1 line). There is also a second WAN port of the following type: isdn s/T, ISDN integrated with the NT-1, 56/64 KCSU/DSU, Ft1/T1 CSU/DSU, or the second port is added with a Flex WAN port.

3Com OfficeConnect NETBuilder has many advantages, including: Easy installation, 3Com's unique Boundary Routing architecture, and Autostartup) as well as Web links and Web-embedded configuration and management tools, plug-and-play installation is very simple and easy to use by remote branches; extensive security, the series of access routers are embedded with an ICSA-Certified Firewall and Network Address Translation (NAT) to protect internal address security. They support IPSec and MPPE encryption.

By supporting all major WAN protocols, the OfficeConnect NETBuilder series access routers can adapt to the network of various scales and diversified connection needs, these protocols include Frame Relay, X.25, PPP, ISDN, Async, and SMDS. This series of access routers have flexible migration options to meet the needs of network changes. For example, when a small branch with a border access router needs IP/IPX support, the Access Router can be easily upgraded to an IP/IPX/AppleTalk router with the on-site software upgrade service, without changing the existing hardware devices. If you require extra bandwidth, you can simply upgrade the 56/64 KCSU/dsu wan specification 12x K to the FT1/T1 WAN model 12x T by replacing the CSU/DSU module ).

Because the current virtual scenario is a typical network, we can see that the products used in this period are products already formed by various manufacturers through product selection. At the same time, we can see that the construction of small and medium-sized enterprise networks is one of the key tasks of many manufacturers, and almost every manufacturer has its own related products. It is worth noting that most vendors have also considered the problems of network upgrades for users in the future and launched modular products in succession. This will undoubtedly bring more choices to users and fully protect users' investment. Due to layout issues, this issue lists only a part of many products, hoping to help you.