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Figure 5. High Availability
The Cisco 890 Series is ideal for enterprise small branch offices and small businesses that need to be connected
to larger enterprise networks. These routers help extend corporate networks to secure rem ote sites while giving
users access to the same applications found in a corporate office. They provide increased reliability for diversity of
wireless data, voice, and video applications. When users require wireless LAN (WLAN) access, visibility and
control of network security are even more critical at the remote site. The Cisco 890 Series meets this need with a
single device that combines integrated 802.11a/g/n capabiliti es with security features such as Wi-Fi Protected
Access (WPA), including authentication with IEEE 802.1X with Cisco Extensibl e Authentication Protocol (LEAP)
and Protected EAP (PEAP), and encryption with WPA Temporal Key Integrity Protocol (TKIP). The Cisco 890
Series wireless models that include the integrated access point have full feature parity with the Cisco Aironet®
1250 Series Access Point and can be used in either autonomous or Cisco Unified WLAN modes. In Cisco Unified
WLAN mode, as part of an enterprise WLAN a rchitecture, all WLAN functions are centrally manage d through
Cisco Wireless LAN Controllers and the Cisco W ireless Control System (WCS). The Cisco 897 with wireless
supports Cisco CleanAir technology.