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The router is a computer that selects the best paths and manages the switching of packets between two different networks. The following are the internal configuration components of a router:
While routers can be used to segment LAN devices, their major use is as a WAN device. Routers have both LAN and WAN interfaces and WAN technologies are frequently used to connect routers. They communicate with each other over WAN connections, and make up autonomous systems and the backbone of the Internet. Since routers operate at Layer 3 of the OSI model, they make decisions in intranets and the internet based on network addresses (on the Internet, by using the Internet Protocol, or IP). The two main functions of routers are the selection of best paths for incoming data packets, and the switching of packets to the proper outgoing interface. Routers accomplish this by building routing tables and exchanging the network information contained within these routing tables with other routers. Routers typically play one of four roles.
Typical route specifications:
Description With the DSL-504 ADSL remote router, speeding up for your network has never been easier or more cost-effective. Offering multi-user connectivity many times faster than traditional modems plus incredible traffic management and security features that allow you to take control of your network, this router is designed to power the WAN link for your entire office. At up to 8Mbps downstream and 640Kbps upstream for full-rate G.dmt, and up to 1.5Mbps downstream and 512Kbps upstream for G.Lite, you'll see a startling and immediate increase in performance. The DSL-504 ADSL router operates on the existing telephone line and does not require any new cabling. Built in ADSL Modem ADSL is always on once it is installed, not a problem since ADSL providers don't charge per minute. It simply eliminates the need to dial up to establish a connection to an ISP or a corporate network and makes your online experience that much faster, reliable and convenient. The ADSL router comes with 4 built-in 10/100Mbps switched ports, each providing dedicated bandwidth for connected devices/computers. Since devices connected directly to a switch don't compete for local bandwidth, the DSL-504 can help speed up your LAN as well. ADSL Router for SOHO Networks With the DSL-504 ADSL remote router, speeding up for your network has never been easier or more cost-effective. Offering multi-user connectivity many times faster than traditional modems plus incredible traffic management and security features that allow you to take control of your network, this router is designed to power the WAN link for your entire office. Up to 8Mbps Speed At up to 8Mbps downstream and 640Kbps upstream for full-rate G.dmt, and up to 1.5Mbps downstream and 512Kbps upstream for G.Lite, you'll see a startling and immediate increase in performance. Uses Existing Telephone Line The DSL-504 ADSL router operates on the existing telephone line and does not require any new cabling. ADSL simply makes better use of the existing wire by partitioning it into different channels or frequencies in order to get more data on the line. The frequency range used by traditional telephones remains untouched, with data traveling at other frequencies. This allows traditional phones and faxes to operate exactly as before without being affected by the high-speed ADSL data transfers which take place at the same time. No More Busy Signals ADSL is always on once it is installed, not a problem since ADSL providers don't charge per minute. It simply eliminates the need to dial up to establish a connection to an ISP or a corporate network and makes your online experience that much faster, reliable and convenient. 4 Built-in Switch Ports The ADSL router comes with 4 built-in 10/100Mbps switched ports, each providing dedicated bandwidth for connected devices/computers. Since devices connected directly to a switch don't compete for local bandwidth, the DSL-504 can help speed up your LAN as well. Routing The DSL-504 has an integrated routing engine that gives you power and control over your network. Built-User Access The router will save you both time and money. DHCP automatically configures computers for networking each time one is turned on. NAT allows multiple LAN users to share a single ISP account over the ADSL line, removing the need to get an account for each person wishing to go online. Security The router provides many security features found in firewalls such as IP filtering, socket filtering, NAT which makes your internal network invisible to the outside, and Virtual Private Networking (VPN*). Traffic Management The router allows you to maximize the use of your ADSL bandwidth through its innate ability to keep broadcast packets off the WAN, IP filtering which can keep certain computers off the WAN, socket filtering which can prevent specific application from using the WAN, and ATM traffic shaping which allows you to prioritize your traffic through service agreements with your ISP. Key Features ADSL port, 4 10/100Mbps Fast Ethernet switched ports Supports both 8Mbps G.dmt and 1.5Mbps G.lite flavors of ADSL Automatic sensing and configuring for the above two ADSL flavors Bridged Ethernet over ATM, IP over ATM, PPP over ATM Embedded PPP over Ethernet Precise ATM traffic shaping VPN for data protection over Internet* IP packet routing/filtering Routing protocol supports RIP-1, RIP-2, Static Routing NAT, DHCP client/server support PAP/CHAP authentication, administrative passwords through Telnet Built-in MIBs for SNMP management Upgradable flash EPROM firmware Web-based GUI for easy installation and setup * VPN pass-through only |
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