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Cisco Aironet 1200 Series Access Point Software Configuration Guide
OL-2159-05
Chapter1 Overview
Management Options
•Secure Shell (SSH) support for providing a strong user authentication and encryption of
management traffic. SSH is a software package that provides a cryptographically secure
replacement for or an alternative to Telnet. It provides strong host-to-host and user authentication
as well as secure encrypted communications over a non secure network. The feature operates as
follows:
–
The SSH server on the access point listens to its TCP port 22 for requests.
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When a request from a client is received, the access point sends a public key, supported cipher
specification details, and supported authentication type (password only) to the client.
–
The client generates a double encrypted session key and sends it to the access point along with
the chosen cipher specification.
–
The access point authenticates the client based on a user ID and password when the user
manager feature is enabled.
–
If authentication is successful, all management traffic between the client and access point is
encrypted using the session key.
Management Options
You can use the access point management system through the following interfaces:
•A web-browser interface
•A command-line interface (CLI)
•Simple Network Management Protocol (SNMP)
The access point’s management system pages are organized the same way for the web- browser interface
and the CLI. The examples in this manual are all taken from the browser interface. Chapter2, “Using
the Management Interfaces” provides a detailed description of each management option.
Roaming Client Devices
If you have more than one access point in your wireless LAN, wirel ess client devices can roam
seamlessly from one access point to another. The roaming functionality is based on signal quality, not
proximity. When a client’s signal quality drops, it roams to another access point.
Wireless LAN users are sometimes concerned when a client device stays associated to a distant access
point instead of roaming to a closer access point. However, if a client’s signal to a distant access point
remains strong, the client will not roam to a closer access point. If client devices checked constantly for
closer access points, the extra radio traffic would slow throughput on the wi reless LAN.
Quality of Service Support
The access point now supports Cisco’s QoS, primarily in the area of wireless VoIP telephones from
Spectralink and Symbol Technologies Corporation. The access point also provides priority
classification, prioritized queueing, and prioritized channel access for other downlink IEEE 802.11
traffic such as streaming audio or video traffic.
With this software release, the access point does not include any QoS enhancements in Cisco IEEE
802.11 client software.