Document ID: 107911
IntroductionPrerequisites
Components Used Conventions
Background InformationUpgrade Process
Upgrade Cisco IOS through the GUI Upgrade Cisco IOS through the CLIVerify
Troubleshoot
Troubleshooting Procedure
NetPro Discussion Forums − Featured ConversationsRelated Information
Introduction
This document shows how to upgrade a Cisco IOS® image on an autonomous access point through the GUI orCLI.
Prerequisites
Components Used
The information in this document is based on Cisco Aironet 1240AG Series Access Point that runs Cisco IOSSoftware Release12.3(8)JEA.
Note: This procedure is applicable for any autonomous access point.
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
Background Information
The upgrade is performed in order to take advantage of the new features available in the new Cisco IOS imageand to fix issues in the previous software version. It is usually performed as a part of regular maintenancetask. You can use either the GUI or CLI to upgrade Cisco IOS on an access point.These are the IP addresses used in this document:
• The IP address of the TFTP server is 10.77.244.196• The IP address of the access point is 10.77.244.194
In this document, the AP is upgraded to Cisco IOS Software Release 12.4.10b−JA3(ED).
Upgrade Process
Upgrade Cisco IOS through the GUI
In this section, you are presented with the information on how to upgrade the access point through the GUI.Complete these steps:
1. Check the current software version of the AP. Open a browser and type http:// 2. From the software upgrade page, choose TFTP upgrade, as shown in Figure 1. Note: You can also check the Cisco IOS version from this screen.3. Enter the IP address of the TFTP server. 4. Specify the name of the Cisco IOS software file to be upgraded in the Upgrade System SoftwareTar file field, as shown in Figure 1.Note: In order to have a smooth upgrade, do not change the original Cisco IOS filename. Leave thename as it was when you downloaded the file from cisco.com. 5. Click the Upgrade button. A status window similar to the one shown in Figure 2 appears.This takes few minutes, and then the AP reboots once the upgrade is complete. Figure 1 Figure 2 Upgrade Cisco IOS through the CLI This section describes how to upgrade Cisco IOS on an access point through the CLI. 1. Log into the access point through a Telnet session. 2. You can download a new image file and choose to replace the current image or keep the currentimage.Note: The latter option is helpful when one of the Cisco IOS files are corrupted. You can work withthe access point from the other image in the flash. 3. If you choose to overwrite the existing file, issue the archive download−sw /overwrite /reload tftp://location/image−name command. The /overwrite option overwrites the software image in flash withthe downloaded image. The /reload option reloads the system after you download the image unlessthe configuration is changed and not saved. For //location, specify the IP address of the TFTP server.For image name, specify the Cisco IOS filename that you plan to use to upgrade the access point. Inthis example, the command is archive download−sw /overwrite /reload tftp: //10.77.244.194/c1240−k9w7−tar.124−10b.JA3.tar. As mentioned earlier, do not change the name ofthe Cisco IOS file. Leave it as the default. You find these logs during the successful file transfer: examining image... Loading c1240−k9w7−tar.124−10b.JA3.tar from 10.77.244.196 (via BVI1): !extracting info (275 bytes)Image info: Version Suffix: k9w7−.124−10b.JA3 Image Name: c1240−k9w7−mx.124−10b.JA3 Version Directory: c1240−k9w7−mx.124−10b.JA3 Ios Image Size: 4813312 Total Image Size: 5560832 Image Feature: UNKNOWN Image Family: C1240 Wireless Switch Management Version: 1.0Extracting files... c1240−k9w7−mx.124−10b.JA3/ (directory) 0 (bytes) c1240−k9w7−mx.124−10b.JA3/html/ (directory) 0 (bytes) c1240−k9w7−mx.124−10b.JA3/html/level/ (directory) 0 (bytes)−−−−−−−−−−−−−−−−−Lines omitted −−−−−−−−−−−−−−−−−−−−−−−−−−− −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− Deleting target version: flash:/c1240−k9w7−mx.124−10b.JA3...done.New software image installed in flash:/c1240−k9w7−mx.124−10b.JA3.Configuring system to use new image...done.Requested system reload in progress... 4. If you choose to keep the existing file, issue the archive download−sw /leave−old−sw /reload tftp://location/image−name command. If there is not enough space to install the new image and keepthe current running image, the download process stops, and an error message is displayed. 5. The AP downloads the Cisco IOS file specified from the DHCP server and reloads with the newsoftware. Verify On the TFTP server, check to see if you receive logs about this file transfer. If you use tftpd32 as your TFTPserver software, you can see these logs for a successful transfer of the Cisco IOS file to AP: Read request for file Once the new image is downloaded, the access point automatically reloads. At this time, the connection to theaccess point is lost. Login to the AP again. On the GUI, use the System Software menu in order to verify ifthe new software is loaded. If you use the CLI, you can check this with the show version command. Look atthe first line that reads Cisco IOS software in order to check to see if the AP has the upgraded image. Troubleshoot Troubleshooting Procedure If the upgrade is not successful, complete these checks: 1. Make sure that the TFTP server is reachable from the access point. Check the IP address assignmenton the AP and the TFTP server. 2. Disable any firewall to see if it blocks the TFTP port udp 69. Determine whether you have any ACLdefined on the network that prevents TFTP service. 3. Ensure that the Cisco IOS file is present in the root directory of the TFTP server. The root directory isalso called the current directory of the TFTP server. 4. Ensure that you download the appropriate image for a particular model of the access point. Otherwisethe download algorithm on the AP rejects the image and displays an error. 5. Make sure that the access point meets the memory requirements specified for the image in the downloads page. If there is not sufficient space in the flash to hold the Cisco IOS file, it produces anerror message. 6. If you use the GUI to upgrade the AP, make sure the browser is supported. During the upgrade process, a status pop−up window appears. Make sure that the browser allows pop−up windows fromthe AP to appear. Microsoft Internet Explorer (IE) 6.0 or later is a supported browser. Refer to theUsing the Web−Browser Interface section of Cisco IOS Software Configuration Guide for CiscoAironet Access Points Cisco IOS Releases 12.4(10b)JA and 12.3(8)JEC for more information on thesupported browser. 7. Sometimes due to the unsuccessful upgrade process, the AP gets stuck in ap: mode and the permission denied error message appears. Refer to the Troubleshooting section of Cisco IOSSoftware Configuration Guide for Cisco Aironet Access Points Cisco IOS Releases 12.4(10b)JA and12.3(8)JEC in order to reload the Cisco IOS on the AP. NetPro Discussion Forums − Featured Conversations Networking Professionals Connection is a forum for networking professionals to share questions, suggestions,and information about networking solutions, products, and technologies. The featured links are some of themost recent conversations available in this technology. NetPro Discussion Forums − Featured Conversations for WirelessWireless − Mobility: WLAN Radio Standards Wireless − Mobility: Security and Network ManagementWireless − Mobility: Getting Started with WirelessWireless − Mobility: General Related Information • Managing Firmware and Configurations• Troubleshooting the Access Point • Technical Support & Documentation − Cisco Systems Contacts & Feedback | Help | Site Map © 2007 − 2008 Cisco Systems, Inc. All rights reserved. Terms & Conditions | Privacy Statement | Cookie Policy | Trademarks ofCisco Systems, Inc. Updated: Sep 02, 2008Document ID: 107911 因篇幅问题不能全部显示，请点此查看更多更全内容