NETWORKING CONCEPTS

Data flows are broken up into fixed length cells, each of which contains a Virtual Path Identifier (VPI) that identifies the path between two nodes, and a Virtual Circuit Identifier (VCI) that identifies the data channel within that virtual path. Each virtual circuit maintains a constant flow of cells between the two end points. When there is no data to transmit, empty cells are sent. And when data needs to be transmitted, it is immediately inserted into the cell flow.

Route Determination

Depending on the ATM transport protocol used, this router can handle traffic as a Layer-2 bridge, using only the physical address stored in the packet’s source and destination address fields. Or it can forward traffic as a fully functional Layer-3 router, using a specific route (that is, next hop) for each IP host or subnet that is statically configured or learned through dynamic routing protocols.

Bridging

If ATM Protocol Encapsulation is set for Ethernet/ATM (RFC 1483), the router behaves like a wire directly connecting your local network to the ISP. The router acts as a transparent bridge between a local PC or LAN attached to the Ethernet port and a remote site across the ADSL link. Bridging can be used to make two separate networks appear as if they were part of the same physical network. Bear in mind that compared to routing, bridging generates a lot more traffic and can significantly slow down the router.

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SMC Networks SMC7401BRA manual Route Determination, Bridging
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SMC7401BRA specifications

SMC Networks SMC7401BRA is a versatile ADSL router that combines high-speed internet access with advanced networking features. Designed for home and small office environments, this router offers a reliable solution for users seeking seamless connectivity and robust performance.

One of the standout features of the SMC7401BRA is its compatibility with ANSI T1.413 and G.dmt standards, ensuring it can support a variety of ADSL broadband connections. This router can provide speeds of up to 8 Mbps for downloads and up to 1 Mbps for uploads, making it suitable for activities such as streaming, online gaming, and video conferencing. Its capability to handle multiple connections simultaneously ensures that all users in the network enjoy efficient internet access without significant drop in speed.

The SMC7401BRA is equipped with a built-in 4-port Ethernet switch, allowing users to connect multiple devices directly via Ethernet cables. This convenience is further enhanced by the inclusion of a WAN port, which facilitates connection to an external broadband modem. Additionally, the device offers a USB port for connecting peripheral devices, enhancing the utility of the router in various networking scenarios.

Security is a crucial consideration for any networking device, and the SMC7401BRA does not fall short in this aspect. It features a built-in firewall, which provides protection against unauthorized access, while also supporting various protocols such as VPN pass-through and NAT, ensuring secure data transmission. Furthermore, users can take advantage of the router's support for both WEP and WPA encryption protocols to safeguard their wireless communications.

Installation and configuration of the SMC7401BRA is straightforward, aided by its user-friendly web-based interface. This makes it accessible for users with varying levels of technical expertise. The router also includes features such as DHCP server support, which simplifies IP address management within the network.

In terms of design, the SMC7401BRA is compact and features a sleek chassis that can blend seamlessly into home or office environments. Its reliable performance, combined with its array of features, makes the SMC Networks SMC7401BRA an excellent choice for anyone in need of a dependable ADSL router that can meet the demands of modern internet usage. Whether for casual browsing or more intensive applications, it delivers the performance and security that users expect from a quality networking device.
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