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Cisco 819 Integrated Services Routers Software Configuration Guide
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Overview of the Cisco 819 Integrated Services Router
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Wireless Device Overview
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Wireless Local Area Network
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4G LTE Wireless WAN
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Basic Router Configuration
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Configuring Backup Data Lines and Remote Management
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Environment Monitoring
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Configuring the Serial Interface
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Configuring Security Features
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Configuring the Ethernet Switches
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Configuring PPP over Ethernet with NAT
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Configuring a LAN with DHCP and VLANs
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Configuring a VPN Using Easy VPN and an IPSec Tunnel
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Cisco IOS Software Basic Skills
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Concepts
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ROM Monitor
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Common Port Assignments
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Feedback
Table Of Contents
Wireless Local Area Network
A Wireless Local Area Network (WLAN) implements a flexible data communication system frequently augmenting rather than replacing a wired LAN within a building or campus. WLANs use radio frequency to transmit and receive data over the air, minimizing the need for wired connections.
The Cisco 819HGW and Cisco 819HWD ISRs have a Host router software running on the first core. The second core runs the WLAN Access Point software.
If WLAN is not supported in an SKU, all 1 GB DRAM memory is allocated to the first core. For the SKUs that support WLAN, 128 MB out of the 1 GB main memory is allocated to the second core.
If WLAN is not supported in an SKU, all 1 GB compact flash memory is allocated to the first core. For the SKUs that support WLAN, 64 MB out of the 1 GB main memory is allocated to the second core.
Note
WLAN is only supported on Cisco 819HGW and Cisco 819HWD ISRs introduced in IOS release 15.2(4)M1.
WLAN Features
The Cisco 819HGW and Cisco 819HWD ISRs support the following features:
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Dual-Radio
This release supports Cisco 802 Access Points (AP802). The AP802 is an integrated access point on the Next Generation of Cisco 819HGW Cisco 819HWD ISRs.
The access point is a wireless LAN transceiver that acts as the connection point between wireless and wired networks or as the center point of a standalone wireless network. In large installations, the roaming functionality provided by multiple access points enables wireless users to move freely throughout the facility while maintaining uninterrupted access to the network.
AP802 Dual Radio contains two different types of wireless radio that can support connections on both 2.4 GHz used by 802.11b, 802.11g, and 802.11n and 5 GHz used by 802.11a and 802.11n.
With the dual-radio/dual-band IEEE 802.11n access point, the Cisco 819HGW and Cisco 819HWD ISRs offer a secure, integrated access point in a single device. The ISRs support both autonomous and unified modes and are backward compatible with 802.11a/b/g.
The routers support IEEE 802.11n draft 2.0 and use multiple-input, multiple-output (MIMO) technology that provides increased throughput, reliability, and predictability.
For complete information on how to configure wireless device and radio settings, see Basic Wireless Device Configuration and Configuring Radio Settings.
Images Supported
For the images supported in the AP802 Dual radio, see Minimum software version needed to support AP802.
CleanAir Technology
The CleanAir is a new wireless technology that intelligently avoids Radio Frequency (RF) to protect 802.11n performance. For more information, see Cisco CleanAir Technology. This feature is supported in all SKUs.
Dynamic Frequency Selection
The Dynamic Frequency Selection (DFS) is the process of detecting radar signals that must be protected against 802.11a interference and upon detection switching the 802.11a operating frequency to one that is not interfering with the radar systems. Transmit Power Control (TPC) is used to adapt the transmission power based on regulatory requirements and range information.
Note
LEDs
The WLAN LED is located at the front panel of the router. Table 3-1 describes the WLAN LED for the Cisco 819HGW and Cisco 819HWD ISRs.
