Cisco Systems CSACS1121K9 manual Checking Basic Settings, Default IP Address Behavior

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Chapter 5 Troubleshooting Autonomous Access Points

Checking Basic Settings

Checking Basic Settings

Mismatched basic settings are the most common causes of lost connectivity with wireless clients. If the access point does not communicate with client devices, check the following areas.

Default IP Address Behavior

When you connect an 1100 series access point running Cisco IOS Release 12.3(2)JA or later with a default configuration to your LAN, the 1100 series access point makes several attempts to get an IP address from the DHCP server. If it does not receive an address, it assigns itself the IP address 10.0.0.1 for five minutes and does not become a mini-DHCP server. During this five-minute window, you can browse to the default IP address and configure a static address. If after five minutes the access point is not reconfigured, it discards the 10.0.0.1 address and reverts to requesting an address from the DHCP server. If it does not receive an address, it sends requests indefinitely. If you miss the five-minute window for browsing to the access point at 10.0.0.1, you can power-cycle the access point to repeat the process.

When you connect an 1100 series access point running Cisco IOS Release 12.2(15)JA or earlier with a default configuration to your LAN, the 1100 series access point makes several attempts to get an IP address from the DHCP server. If it does not receive an address, it assigns itself the IP address 10.0.0.1 and becomes a mini-DHCP server. In that capacity, the access point provides up to twenty IP addresses between 10.0.0.11 and 10.0.0.30 to the following devices:

•An Ethernet-capable PC connected to its Ethernet port

•Wireless client devices configured to use either no SSID or tsunami as the SSID, and with all security settings disabled

The mini-DHCP server feature is disabled automatically when you assign a static IP address to the access point.

Caution When the access point is connected to your LAN, the access point mini-DHCP server provides an IP address to any DHCP requests it receives.

Default SSID and Radio Behavior

In Cisco IOS Relese 12.3(2)JA2 and earlier, the access point radio is enabled by default and the default SSID is tsunami.

In Cisco IOS Release 12.3(4)JA and later, the access point radio is disabled by default, and there is no default SSID. You must create an SSID and enable the radio before the access point will allow wireless associations from other devices. These changes to the default configuration improve the security of newly installed access points. Refer to the Cisco IOS Software Configuration Guide for Cisco Aironet Access Points for instructions on configuring the SSID and the “Enabling the Radio Interfaces” section on page 5-5for instructions on enabling the radio interface.

Cisco Aironet 1100 Series Access Point Hardware Installation Guide

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OL-4309-07

 

 

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Contents Corporate Headquarters Page N T E N T S Deploying the Access Points on the Wireless Network Finding the Software Version Chinese Translation B-7 Purpose PrefaceAudience OrganizationConventions ViiiPreface Conventions Related Publications Obtaining DocumentationCisco.com Documentation FeedbackCisco Product Security Overview Product Documentation DVD Ordering DocumentationReporting Security Problems in Cisco Products Product Alerts and Field NoticesObtaining Technical Assistance Cisco Support WebsiteLocating the Product Serial Number Obtaining Additional Publications and Information Submitting a Service RequestDefinitions of Service Request Severity Xvi Overview Autonomous Access PointsLightweight Access Points Product TerminologyOverview Ethernet Port Hardware FeaturesSingle Radio Operation Power Sources LEDsUL 2043 Certification Network Examples with Autonomous Access PointsAnti-Theft Features Root Unit on a Wired LAN Access pointRepeater Unit that Extends Wireless Range Access Point as RepeaterCentral Unit in an All-Wireless Network Workgroup Bridge ConfigurationNetwork Example with Lightweight Access Points Typical Layer 3 Network Configuration ExampleOL-4309-07 Installing the Access Point General Safety Guidelines Safety InformationFCC Safety Compliance Statement Package Contents Unpacking the Access PointBasic Installation Guidelines Access Point Layout and Connectors 1shows the access point layout and connectorsDeploying the Access Points on the Wireless Network Controller Discovery Process for Lightweight Access PointsOL-4309-07 Connecting the Ethernet and Power Cables Access Point Power OptionsConnecting to an Ethernet Network with Local Power Powering Up the Access Point OL-4309-07 Mounting Instructions Overview Mounting Method Materials Required KitMounting on a Horizontal or Vertical Surface Mounting BracketMounting on a Suspended Ceiling Suspended Ceiling Mounting Bracket PartsAccess Point Mounting Slots Mounting Above a Suspended Ceiling Remove a ceiling tile adjacent to the mounting locationUsing the Security Hasp Adapter Security Hasp AdapterMounting on a Cubical Wall Partition Security Hasp with PadlockUsing the Desktop Holster Cubicle Wall BracketDesktop Holster Using the Cable Lock Feature Kensington LockOL-4309-07 GHz Radio Upgrade for Autonomous Access Points Upgrade Overview Unpacking the RadioRemoving the Back Cover Go to the Removing a 2.4-GHz Radio sectionRemoving a 2.4-GHz Radio Radio Card and Antenna CardInstalling a 2.4-GHz Radio Connector pinsInserting Radio Card in Mini-PCI Connector Go to the Replacing the Back Cover section on Replacing the Back Cover Product compliance label Back coverFinding the Software Version OL-4309-07 Troubleshooting Autonomous Access Points Checking the Autonomous Access Point LEDs Ethernet Status RadioLED Default Ssid and Radio Behavior Checking Basic SettingsDefault IP Address Behavior WEP Keys Security SettingsEnabling the Radio Interfaces Running the Carrier Busy Test Resetting to the Default Configuration Running the Ping or Link TestUsing the Mode Button Using the Web Browser InterfaceReloading the Access Point Image Web Browser Interface Browser Http InterfaceObtaining the Access Point Image File Obtaining the Tftp Server SoftwareOL-4309-07 Troubleshooting Lightweight Access Points Guidelines for Using 1100 Series Lightweight Access Points Using Dhcp OptionChecking the Lightweight Access Point LEDs Access Points LEDsMessage Ethernet Status Radio Type Returning the Access Point to Autonomous Mode Enabled see the Mode Button Setting section onObtaining the Autonomous Access Point Image File Mode Button SettingObtaining the Tftp Server Software OL-4309-07 Translated Safety Warnings OL-4309-07 Declarations of Conformity and Regulatory Information For Home or Office USE Vcci Statement for Japan Industry-Canada Canadian Compliance StatementOL-4309-07 EMC Declaration of Conformity for RF Exposure Japanese TranslationAll Access Points English TranslationOperation of Cisco Aironet Access Points in Brazil Access Point ModelsDeclaration of Conformity Statements Portuguese TranslationOL-4309-07 Page OL-4309-07 Page OL-4309-07 Access Point Specifications Category SpecificationsRadio GHz Radio To UL 2043 and they should not be placed in a building’s Category Specifications Channels and Maximum Power Levels OL-4309-07 Priming Lightweight Access Points Prior to Deployment OL-4309-07 Page Access Points Lightweight Access Point Vendor Class Identifier VCI Configuring Option 43 for 1000 Series Access Points Quotation marks must be includedType + Length + Value OL-4309-07 O S S a R Y GL-2 GL-3 GL-4 GL-5 GL-6 D E IN-2

CSACS1121K9 specifications

Cisco Systems CSACS1121K9 is a part of Cisco's comprehensive suite of security solutions tailored for identity and access management. This device, recognized for its reliability and functionality, plays a crucial role in ensuring that organizations can efficiently manage user access across their networks.

One of the main features of the CSACS1121K9 is its centralized user authentication capabilities. This device simplifies the process of validating user identities, allowing administrators to manage credentials for a variety of access methods, including web-based authentication, RADIUS, and TACACS+. This flexibility plays a significant role in diverse environments where different protocols may be required for various devices or applications.

The CSACS1121K9 is built on the robust Cisco Secure Access Control Server (ACS) platform. This platform supports a wide range of security policies, making it versatile enough for different organizational needs. With its capability to integrate seamlessly with other Cisco solutions and third-party platforms, the device enhances the overall security posture of an organization.

In terms of scalability, the CSACS1121K9 can support a substantial number of users and devices. This scalability ensures that as organizations grow, their access management system can scale proportionately without performance degradation. The ability to handle thousands of simultaneous authentication requests makes it suitable for both small companies and large enterprises.

Another significant characteristic of the CSACS1121K9 is its support for advanced visibility and reporting. Administrators can track authentication attempts, policy enforcement, and other critical events in real time. This level of monitoring is essential for compliance audits and helps organizations quickly react to potential security threats.

Moreover, the CSACS1121K9 includes capabilities for implementing role-based access control (RBAC). This feature allows organizations to define specific access rights based on user roles, which enhances security while facilitating efficient operations.

In conclusion, the Cisco Systems CSACS1121K9 is a powerful tool for organizations seeking to enhance their identity and access management frameworks. With its centralized user authentication, scalability, advanced reporting capabilities, and support for RBAC, it provides a robust solution that can adapt to the evolving security demands of modern networks. Whether deployed in a small business environment or within large enterprises, the CSACS1121K9 stands out for its comprehensive feature set and ability to integrate into existing security infrastructures.
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