B-12 User’s Reference Guide

Routers B and C (which could also be Netopia R9100s) serve the two remote networks that are subnets of a.b.c.0. The subnetting is accomplished by configuring the Netopia R9100 with connection profiles for Routers B and C (see the following table).

Connection profile

Remote IP address

Remote IP mask

Bits available for host

address

 

 

 

 

 

 

 

 

 

 

 

For Router B

a.b.c.128

255.255.255.192

7

 

 

 

 

For Router C

a.b.c.248

255.255.255.248

3

 

 

 

 

The Netopia R9100’s connection profiles for Routers B and C create entries in its IP routing table. One entry points to the subnet a.b.c.128, while a second entry points to the subnet a.b.c.248. The IP routing table might look similar to the following:

 

 

IP Routing Table

 

 

Network Address-Subnet Mask-----

via Router------

Port--Age--------

Type------

----------------------------------

SCROLL UP--------------------------------

 

0.0.0.0

0.0.0.0

a.b.c.1 WAN

3719

Management

127.0.0.1

255.255.255.255 127.0.0.1 lp1

6423

Local

a.b.c.128

255.255.255.192 a.b.c.128 WAN

5157

Local

a.b.c.248

255.255.255.248 a.b.c.248 WAN

6205

Local

---------------------------------SCROLL DOWN-------------------------------

UPDATE

Let’s see how a packet from the Internet gets routed to the host with IP address a.b.c.249, which is served by Router C. The packet first arrives at Router A, which delivers it to its local network (a.b.c.0). The packet is then received by the Netopia R9100, which examines its destination IP address.

The Netopia R9100 compares the packet’s destination IP address with the routes in its IP routing table. It begins with the route at the bottom of the list and works up until there’s a match or the route to the default gateway is reached.

When a.b.c.249 is masked by the first route’s subnet mask, it yields a.b.c.248, which matches the network address in the route. The Netopia R9100 uses the connection profile associated with the route to connect to Router C, and then forwards the packet. Router C delivers the packet to the host on its local network.

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Farallon Communications R9100 manual 0.0 C.1 WAN 3719
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R9100 specifications

Farallon Communications R9100 is a high-performance network device designed to meet the demanding needs of modern telecommunications. This robust system specializes in delivering reliable, efficient, and scalable solutions for various networking environments. Its architectural design integrates cutting-edge technologies that enhance performance while ensuring compatibility with existing infrastructure.

One of the standout features of the R9100 is its advanced routing capabilities. Equipped with powerful processors, it supports multiple routing protocols, including OSPF, BGP, and EIGRP. This flexibility allows network administrators to optimize data flow and maintain seamless connectivity across diverse network topologies. The R9100 also includes sophisticated Quality of Service (QoS) mechanisms, enabling prioritization of critical traffic, which is essential for latency-sensitive applications.

Another significant aspect of the R9100 is its support for various interfaces. Whether organizations require Ethernet, fiber, or wireless connections, the R9100 accommodates a broad range of interface options. This versatility ensures that it can be deployed in various environments, from large enterprise networks to smaller branch offices.

Security is a crucial consideration in today’s networking landscape, and the R9100 addresses this with built-in security features. These include stateful firewall capabilities, Intrusion Detection System (IDS), and comprehensive Virtual Private Network (VPN) support. Such features allow organizations to safeguard sensitive data and maintain compliance with industry regulations.

The R9100 also prioritizes ease of management. With a user-friendly interface and robust monitoring tools, network administrators can easily configure and manage the device. This capability facilitates rapid troubleshooting and performance tuning, ensuring minimal downtime and optimal user experience.

Energy efficiency is an additional characteristic that sets the R9100 apart from its competitors. Designed with eco-friendly technologies, it minimizes power consumption while maximizing output, making it an ideal choice for organizations looking to reduce their carbon footprint.

In conclusion, Farallon Communications R9100 stands out as a versatile and powerful network device that meets the complexities of modern telecommunications. With its advanced routing features, robust security measures, varied interface options, and energy-efficient design, the R9100 is a formidable player in the networking landscape. Organizations can rely on this solution to enhance their network performance and evolve alongside their growing technological needs.
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