Step 3 To use Cisco Router and Security Device Manager (SDM) to configure your router, you must connect a PC to the first Ethernet switch port. Connect one end of an Ethernet cable to one of the Ethernet switch ports (FE 2–FE 9), and connect the other end to the Ethernet port on your PC.

Caution Always connect the Ethernet cable to an Ethernet port on the router. Accidentally connecting the cable to the wrong port can damage your router.

Step 4 To connect the router to your service provider network, connect one end of an Ethernet cable to a 10/100 Fast Ethernet port (these ports are labeled FE 0 and FE 1); connect the other end of the cable to a network port on your service provider’s broadband (xDSL or cable) modem equipment, as shown in Figure 2.

Caution Always connect the Ethernet cable to an Ethernet port on the router. Accidentally connecting the cable to the wrong port can damage your router.

Step 5 (Optional) The Cisco 1811 router supports a 230-kbps dialup connection to your service provider network through its V.92 modem port. The Cisco 1812 router supports a 144-kbps dialup connection to your service provider network through its ISDN S/T port. These connections can serve as a backup to your service provider if your primary connection goes down. To make a backup connection to your service provider network, connect one end of a straight-through RJ-11 cable to the V.92 modem port (for the Cisco 1811) or a straight-through RJ45 cable to the ISDN S/T port (for the Cisco 1812) on the router, as shown in Figure 2, and connect the other end of the cable to your telephone wall jack.

Note To configure your router for a backup dialup connection, you must use the Cisco IOS command-line interface (CLI). For more information, see the Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide.

5Connecting Antennas to the Router RP-TNC Connectors

If your router has the wireless LAN option, connect the antennas by screwing the antenna connectors in a clockwise direction onto the reverse-polarity threaded Neill-Concelman (RP-TNC) connectors on the back panel of the router. Figure 3 shows an example of how to connect the swivel-mount dipole antennas to the router.

Note The location and position of your router antennas are crucial to effective wireless connectivity. For more information about the antennas compatible with the Cisco 1801, Cisco 1802, and Cisco 1803 routers, see the online documents located at the following URL: http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800fix/antennas/index.htm

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Cisco Systems 1811, 1812 quick start Connecting Antennas to the Router RP-TNC Connectors
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1811, 1812 specifications

Cisco Systems has long been recognized as a leader in network technology, offering a range of products to meet the diverse needs of businesses. Among these products, the Cisco 1812 and 1811 series routers stand out for their robust functionality and reliability, making them ideal choices for small to medium-sized enterprises.

The Cisco 1812 and 1811 routers are designed for secure, high-performance routing, enabling businesses to connect multiple locations seamlessly. They support a variety of networking protocols, ensuring compatibility with existing infrastructure. Both models are equipped with advanced security features including firewall protection, VPN support, and intrusion prevention systems. This emphasis on security makes them suitable for environments where data integrity and confidentiality are paramount.

One of the main features of the Cisco 1812 and 1811 routers is their support for high-speed WAN connections. With built-in WAN optimization technologies, they can effectively manage bandwidth usage and provide enhanced performance for applications. Additionally, these routers support various connection types, including DSL, cable, and T1 lines, giving enterprises the flexibility they need in choosing their internet service provider.

Another notable characteristic of the Cisco 1812 and 1811 routers is their ease of management. Cisco’s IOS software is user-friendly, allowing network administrators to configure and monitor the devices efficiently. Advanced features such as Quality of Service (QoS) enable organizations to prioritize traffic, ensuring that critical applications receive the necessary bandwidth for optimal performance.

The Cisco 1812 and 1811 series also feature an array of interfaces, including Ethernet ports, serial ports, and USB connections. This variety allows for greater connectivity options and the ability to incorporate various devices within the network. Moreover, the modular design of these routers supports additional interfaces and expansion modules, making it easier for businesses to scale their networks as they grow.

In conclusion, the Cisco 1812 and 1811 routers are exemplary solutions for businesses seeking reliable, secure, and high-performance networking devices. Their comprehensive security features, ease of management, and flexibility in connectivity make them ideal for small to medium-sized enterprises looking to enhance their network capabilities. These routers exemplify Cisco’s commitment to innovation and customer satisfaction, ensuring that businesses can operate efficiently in an increasingly connected world.
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