Chapter 3: Networking

be configured to get this IP address by various means, including a DHCP server, by you

directly entering it, or sometimes by a PC generating one of its own.

Ethernet requires that each TCP/IP stack on the Wireless Cable Gateway also have associated

with it an Ethernet MAC (Media Access Control) address. MAC addresses are permanently

fixed into network devices at the time of their manufacture. 00:90:64:12:B1:91 is an example

of a MAC address.

Data packets enter and exit a device through one of its network interfaces. The gateway offers

Ethernet, USB, and 802.11b/g wireless network interfaces on the LAN side and the

EURO-DOCSIS network interface on the WAN side.

When a packet enters a network interface, it is offered to all the TCP/IP stacks associated with

the device side from which it entered. But only one stack can accept it — a stack whose

configured Ethernet address matches the Ethernet destination address inside the packet.

Furthermore, at a packet’s final destination, its destination IP address must also match the IP

address of the stack.

Each packet that enters a device contains source MAC and IP addresses telling where it came

from, and destination MAC and IP addresses telling where it is going to. In addition, the

packet contains all or part of a message destined for some application that is running on the

destination device. IRC used in an Internet instant messaging program, HTTP used by a web

browser, and FTP used by a file transfer program are all examples of applications. Inside the

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Illustrations contained in this document are for representation only.

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Gateway TWG870 user manual Networking
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TWG870 specifications

The Gateway TWG870 is a versatile and robust residential gateway device designed to provide seamless internet connectivity and multifunctional capabilities for home networking. One of its standout features is its integrated DSL modem, which supports ADSL and ADSL2+ standards, ensuring reliable high-speed internet access. With download speeds reaching up to 24 Mbps, users can enjoy smooth streaming, gaming, and web browsing experiences.

Equipped with a built-in 4-port Ethernet switch, the TWG870 allows multiple wired devices to connect directly, enhancing network stability and performance. In addition to the wired connections, the gateway also features integrated Wi-Fi technology, specifically IEEE 802.11n, which offers better coverage and faster speeds compared to previous wireless standards. This enables users to connect their laptops, smartphones, tablets, and smart home devices wirelessly, creating a comprehensive home network without the clutter of cables.

Another significant characteristic of the Gateway TWG870 is its advanced security features. The device supports WPA/WPA2 encryption protocols, which safeguard users' networks from unauthorized access and ensure data privacy. Furthermore, with a built-in firewall, it adds an extra layer of protection against external threats, making it a reliable choice for families and individuals concerned about online safety.

The TWG870 also supports advanced Quality of Service (QoS) features, allowing users to prioritize bandwidth allocation for critical applications such as video conferencing or online gaming. This ensures a lag-free experience even when multiple devices are connected to the network simultaneously.

In terms of physical design, the Gateway TWG870 is compact and features a sleek appearance, making it suitable for placement in various home environments. Its user-friendly interface facilitates easy setup and configuration, enabling users to customize their network settings according to personal preferences.

Additionally, the device is compatible with various operating systems, ensuring broad compatibility across different platforms. With all these features combined, the Gateway TWG870 stands out as a reliable and efficient solution for home networking needs, providing users with the performance and flexibility required in today's connected world.
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