Cisco Aironet Access Point Deployment Guide

Figure 51: AP 3500i/e — 2x3:2 System (Two Transmitters, Three Receivers, Supporting Two Spatial Streams)

Spatial streams, the act of transmitting information out of more than one antenna port concurrently, requires that the AP have at least two or more transmitters and support elements of 802.11n (for example, support of multiple spatial streams).

With 802.11a/b/g, data rates were actual Mbps rates like 2, 11, and 54 Mbps and were done with one transmitter. The AP 3500 has two transmitters per band, so it supports 802.11n data rates up to 300 Mbps using two spatial streams.

With 802.11n, the different rates are called the Modulation and Coding Scheme (MCS) index value, and the value defines how many streams are used. The AP 3500 supported up to 300 Mbps (MCS rate 15) configured with a bonded channel and short guard interval (GI). (See Figure 52.) The MCS values correspond to actual data rates.

Note: 2x3:2 means two transmitters, three receivers supporting two spatial streams

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Cisco Systems AIRCAP1602EAK9, 3602i, AP2600, AP3600, AP1600 manual Cisco Aironet Access Point Deployment Guide
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AP3600, AIRCAP1602EAK9, 1602E, 3602i, 1600 specifications

Cisco Systems 1600 series routers are well-regarded in the networking industry for their reliability, versatility, and performance. Designed to meet the needs of small to medium-sized businesses, the Cisco 1600 series is primarily oriented towards providing robust connectivity for branch offices and remote sites.

One of the most significant features of the Cisco 1600 series is its modular architecture. This allows users to customize their routers with various interface cards, enabling support for different types of WAN technologies, including serial, ISDN, and Frame Relay. The modular design not only enhances flexibility but also extends the lifespan of the equipment, as businesses can upgrade their capacity and functionalities according to evolving demands.

Another key characteristic of the Cisco 1600 routers is their advanced routing capabilities. These devices support a wide range of routing protocols, including RIP, OSPF, EIGRP, and BGP. This versatility ensures seamless integration into existing network infrastructures, facilitating the scalability and adaptability that modern networks require.

Security is also a crucial aspect of the Cisco 1600 series. Incorporating features such as access control lists (ACLs) and support for Virtual Private Networks (VPNs), these routers help businesses safeguard their sensitive data during transmission. Enhanced security features allow companies to implement secure remote access for employees, thereby maintaining productivity without compromising safety.

In addition to routing and security, the Cisco 1600 series boasts Quality of Service (QoS) capabilities. This technology enables better management of network traffic, ensuring that critical applications receive the bandwidth they need for optimal performance. By prioritizing important data flows, businesses can enhance user experience and minimize disruptions across their network.

The Cisco 1600 series routers are also equipped with user-friendly interfaces and management tools. Cisco's IOS software platform provides a command-line interface (CLI) and web-based graphical interface for straightforward configuration and monitoring. This simplifies network management tasks and reduces the learning curve for IT personnel.

In summary, the Cisco Systems 1600 series routers offer a significant combination of modularity, robust routing protocols, enhanced security measures, Quality of Service features, and user-friendly management options. These characteristics make them an excellent choice for small to medium-sized enterprises looking to establish a reliable and secure networking infrastructure. With the continued evolution of networking technologies, the Cisco 1600 series stands as a dependable solution for businesses navigating an increasingly complex digital landscape.
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