distinct DNS functions provided by the router: the DNS resolver and the DNS server.

DNS Resolver

The DNS resolver is the entity that creates a DNS request for transmission to a DNS server (which may be co-located in the router or be an external DNS server). The DNS resolver is only used by certain user interface commands that allow a hostname argument as well as an IP address argument.

The DNS resolver requires the user to configure a single DNS server IP address to which to direct DNS requests. This IP address may be the router itself in the situation where the DNS server is enabled on the router or it may be any reachable IP address at which a DNS server is available.

DNS Server

The DNS server is the entity that responds to DNS requests. The DNS server provides IP address-to-hostname resolution and hostname-to-IP address resolution for LAN clients via DNS requests. It may also be configured to provide this service for WAN clients. The DNS server also supports hostname-to-IP address resolution for user interface commands where appropriate in response to requests submitted by the DNS resolver. The DNS server is enabled by default from the factory and provides the router with the default hostname “ speedstream”.

Public and Private Networks and the use of NAPT

An IP address must be unique among all networks reachable from a given host using the IP protocols. The United States Internet Registry ensures the uniqueness of the IP addresses on the Internet. The Internet Registry assigns an entire IP network number to each site connected to the Internet. Each IP address at a site is unique as long as the site assigns a different host number to each host on its network. Thus each host is ensured a globally unique IP address that is known as a public IP address.

However, there has been concern over the eventual exhaustion of the public address space. This has led the Registry to set aside IP network numbers for private addressing. These numbers are not assigned to anyone by the Internet Registry and are open for use by any site. IP addresses are

Efficient Networks, Inc.

Technical Concepts 33

Page 33 Page 35
Page 34
Image 34
Efficient Networks 5600 Series manual DNS Resolver, DNS Server, Public and Private Networks and the use of Napt
Page 33 Page 35

5600 Series specifications

The Efficient Networks 5600 Series is a sophisticated line of broadband access devices designed to provide high-performance networking solutions for service providers and enterprises. These devices cater to a variety of networking needs, including DSL, fiber, and Ethernet technologies, making them highly versatile in today’s ever-evolving digital landscape.

One of the main features of the Efficient Networks 5600 Series is its support for advanced DSL technologies such as VDSL2 and ADSL2+. This capability enables service providers to offer high-speed internet access over existing telephone lines, ensuring customers receive the best possible performance without the need for new infrastructure. The series also supports bonding technologies, which allow the aggregation of multiple DSL lines, effectively increasing bandwidth and improving the overall user experience.

In addition to its robust DSL capabilities, the 5600 Series is designed with fiber and Ethernet support, making it a future-proof option for service providers looking to expand their service offerings. The series includes GPON and Active Ethernet solutions, catering to both residential and business customers. This flexibility ensures that the devices can handle various deployment scenarios, providing exceptional value for network operators.

Security is another crucial characteristic of the 5600 Series. With built-in firewalls and support for robust encryption protocols, these devices protect sensitive data and help maintain a secure networking environment. This focus on security supports compliance with industry regulations, which is essential for service providers that handle sensitive customer information.

The Efficient Networks 5600 Series also excels in management and monitoring capabilities. Features such as TR-069 support for remote management allow service providers to efficiently monitor device performance, troubleshoot issues, and improve service delivery without needing to dispatch technicians to customer premises. This not only reduces operational costs but also enhances the overall customer experience by resolving issues more quickly.

In conclusion, the Efficient Networks 5600 Series stands out as a powerful, feature-rich solution for broadband access. Its advanced DSL capabilities, flexible support for fiber and Ethernet, strong security features, and comprehensive management tools make it an excellent choice for service providers aiming to deliver high-quality internet services while preparing for future demands. With its combination of performance, scalability, and ease of use, the 5600 Series is positioned to meet the networking needs of today and tomorrow.
Top Page Image Contents