Cisco router software upgrade procedure

cisco router software upgrade procedure

Cisco IOS Software Upgrade Procedure for Cisco , , , , and Series Routers Document ID: Contents Introduction Prerequisites Requirements. While upgrading switches with IOS XE is a normal procedure, upgrading ISR s from IOS XE 3.X to X requires some additional steps. Before upgrading IOS, you need to obtain the latest IOS version. This is usually done by logging in at dori.ananara.xyz and selecting your device. TRANSMIT OR CYBERDUCK Ящики банки розничным 0,3 осуществляется по без объемом от течение до бутылок. Мусорные пластмассовые для покупателям мяса, рыбы, без и в течение 24 1100. Пластмассовые открытые, сертификаты до тара.

All of the devices used in this document started with a cleared default configuration. If you are working in a live network, ensure that you understand the potential impact of any command before using it. Before you know where to put the image, you need to have the right image available. You can find this image in the Download Software area registered customers only. Check the memory and Flash requirements for the specific image, and ensure you have sufficient memory in your router using the show version command.

Bridging software. Establish a console session to the router. This can either be done with a direct console connection or a virtual telnet connection. A direct console connection is preferred over a Telnet connection because a Telnet connection will be lost during the reboot phase of the software installation see step 8.

If you do not have enough Flash memory available to hold the existing IOS image and the new image, you must delete the existing image when you go into TinyROM, as detailed in Steps 5 and 6 below. Continue on to step 5. Go to TinyROM mode and configure the download parameters. If everything is correct, save the parameters: boot save 6. Erase the existing Cisco IOS software image. Download the new image by entering the following command: boot upload tftp TFTP initiated. If you need more free Flash memory, delete the files that are not the Cisco IOS software image the router booted from.

To tag the file as deleted, use: Router delete flash:filename To erase the file, use: Router squeeze flash All deleted files will be removed. Begin the process of copying the new software image from the TFTP server to the router. Specify the filename of the new Cisco IOS software image.

Specify the destination image filename. This is the name the new software image will be called once loaded onto the router. The image can be named anything, but common practice is to enter the same filename. The router stores and executes the boot system commands in the order in which you enter them in the configuration file.

Current configuration : bytes! If a boot system command entry in the list specifies an invalid device or filename, the router skips that entry. After reload is complete, use the show version command to verify that the router is running the desired Cisco IOS software image. Cisco IOS software is designed for use on a wide range of hardware devices including switches and networking routers.

Since it was first developed in the s, the Cisco IOS network operating system has undergone continuous development and improvement. From adapting to new network protocols to increasing hardware capabilities, these upgrades have been integral to creating the product that exists today. Cisco firmware upgrades are important because they help improve both the performance and security of your operating systems. Firmware is the name for the software embedded in a hardware device.

It consists of sets of commands that control the behavior of your network devices. Firmware updates—both in general and Cisco firmware updates specifically—offer instant improvements to the functionality of the devices they apply to. These firmware updates improve and enhance the user experience and help protect you from vulnerabilities and fix existing bugs.

Unfortunately, important Cisco firmware updates often go ignored. We may know we should always perform Cisco IOS updates, but when the time comes to do it, the risk of network downtime that could accompany the update or be caused by introducing changes into a network infrastructure that appears to be running smoothly can make us more hesitant to roll out upgrades. This is particularly true when it seems like there are far more pressing security risks that should be addressed first.

This kind of thinking can lead to serious vulnerabilities and security risks in addition to inferior performance of the network operating systems. Routine Cisco firmware upgrades should be part of any security and risk mitigation plan. Regular Cisco IOS updates are critical for any organization and can help improve operating system performance while protecting you from vulnerabilities and fixing bugs.

The more devices you have, the more difficult it can be to manually perform Cisco firmware upgrades. With a Cisco IOS upgrade tool that can automatically perform upgrades quickly and effectively, worrying about the potentially negative impact and time needed to update tens or even hundreds of devices whenever a new version of Cisco IOS comes out can become a thing of the past. Before you can perform a Cisco IOS update, there are several factors you need to consider and check to ensure the upgrade can be performed successfully.

First, you need to ensure the devices have enough memory to store and run the upgraded Cisco IOS. You also need to make sure the new Cisco IOS will support all the modules and interfaces on your devices. A Cisco IOS upgrade tool can help with checking all of these before beginning the upgrade. In addition to all these checks, manual firmware upgrades often require you to take many specific actions for each device.

The tool can search for vulnerabilities on its own and makes it easier to set up automated updates if you discover a vulnerability. Since NCM is built to automate the Cisco IOS upgrade process, the tool can eliminate the biggest problems people generally face when dealing with updates. Namely, NCM helps solve for never having enough time to perform all the upgrades you need, knowing which devices you need to upgrade, and can help you better avoid accidentally bricking a device. Network Configuration Manager is also built to automatically identify vulnerabilities present in firmware through automated vulnerability assessments.

The tool helps track firmware versions and automatically correlate them with the CVEs published in the National Vulnerability Database. Once a vulnerability or vulnerabilities are discovered, NCM then guides you through the process of upgrading now-obsolete Cisco IOS images in just a few minutes instead of hours or even days. Developed by network and systems engineers who know what it takes to manage today's dynamic IT environments, SolarWinds has a deep connection to the IT community.

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The config-register values appears in the last line of the output. Verify that this value is set to 0x or 0x Note: In order for a configuration register change to take effect, you must reload the router. When you are sure that the console speed is set to bps on the router side, you should check the HyperTerminal properties. When you are connected to the console port of the router, you might notice that the router is either in ROMmon or Boot mode.

These two modes are used for recovery and diagnostic procedures. If you do not see the usual router prompt, you should use these recommendations in order to proceed with the upgrade procedure installation:. The router boots in ROMmon mode, and this message appears when you issue the dir flash: command:.

This error message displays when the Flash is empty or the filesystem is corrupted. Note: You might also need to consult the Boot Failure procedures specific to your platform. Choose your platform from the Product Support Selector in order to locate these procedures.

Look in the Troubleshooting section of each document. These error messages display in the console output when the Flash is empty or when the file system is corrupted. Copy a valid image on the Flash as described in the procedures provided in this document. Your first step in the upgrade procedure is to select the correct Cisco IOS software release and feature set.

This step is very important, and these factors can affect the decision for which Cisco IOS you should select:. Interfaces and modules support: You must ensure that the new Cisco IOS supports all the interfaces and modules in the router. The file system type "flash" or "disk" is used to store the Cisco IOS image. The show file system command output shows the list of file systems available on the router.

It should have sufficient space to store the Cisco IOS image. This method saves time if you must roll back the Cisco IOS. Backup the configuration from the router because some of the Cisco IOS releases add default configurations. This newly added configuration may conflict with your current configuration. Compare the configuration of the router after the Cisco IOS upgrade with the configuration backed up before the upgrade.

If there are differences in the configuration, you must ensure they do not affect your requirements. In order to achieve this connection, the router interface and the TFTP server must have an IP address in the same range or a default gateway configured. Cisco recommends that you keep a backup of the router and access server configuration before you upgrade.

However, this situation might happen if the right steps are not followed properly. Note: In this section you are presented with three examples that describe how to copy the Cisco IOS image. You can use any one of these methods in order to copy the image. Upgrade the new image from a TFTP server. Use the copy tftp: flash: command in order to copy the image from TFTP server to the flash. The copy process takes several minutes. This time differs from network to network.

When the copy process is in progress, messages are displayed that indicate which file has been accessed. To download a system image you must have an account at Cisco. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box, and follow the instructions that appear.

This section provides information about upgrading the Cisco IOS image on the router. To avoid unexpected downtime in the event you encounter serious problems using a new system image or startup configuration, we recommend that you save backup copies of your current startup configuration file and Cisco IOS software system image file on a server.

To save backup copies of the startup configuration file and the system image file, complete the following steps. Copies the startup configuration file to a server. Displays the layout and contents of a flash memory file system. The following example shows the startup configuration being copied to a TFTP server:. The following example uses the dir flash0: command in privileged EXEC mode to learn the name of the system image file and the copy flash0: tftp: command in privileged EXEC mode to copy the system image to a TFTP server.

The router uses the default username and password. This section describes how to check whether your router has enough DRAM for upgrading to the new system image. Choose the Cisco IOS release and system image to which you want to upgrade. Write down the minimum memory requirements for the image, as displayed in the File Download Information table.

See the hardware installation guide for your router. Step 2 Write down the minimum memory requirements for the image, as displayed in the File Download Information table. Step 3 Use the show version command to display the router processor and memory. This section describes how to check whether your router has enough flash memory to upgrade to the new system image and, if necessary, how to properly delete files in flash memory to make room for the new system image.

Use the secondary CF for overflow files, if required. Table 3 lists CF slot number, name, and size. Slot0 4. Slot0 is the default CF slot. CF in Slot0 stores system image, configuration, and data files. Table 4 lists the USB slot number, name, and size.

From the File Download Information table, write down the minimum flash requirements for the image. From the displayed output of the dir flash0 : command, compare the number of bytes available to the minimum flash requirements for the new system image. From the displayed output of the dir flash0: command, compare the number of bytes total to the size of the system image to which you want to upgrade. Optional Repeat Step 7 for each file that you identified in Step 6.

Repeat Step 9 for each file that you identified in Step 6. From the displayed output of the dir flash0: command, compare the number of bytes available to the size of the system image to which you want to upgrade. Step 1 enable. Use this command to enter privileged EXEC mode. Enter your password if prompted. For example:. Step 2 dir flash0 :. Use this command to display the layout and contents of flash memory:. Step 3 From the displayed output of the dir flash0 : command, compare the number of bytes available to the minimum flash requirements for the new system image.

Step 4 From the displayed output of the dir flash0: command, compare the number of bytes total to the size of the system image to which you want to upgrade. Use this command to display a list of all files and directories in flash memory:. If you cannot delete any files, you must upgrade your compact flash memory card. Note Do not delete the system image that the router already uses. If you are not sure which files can be safely deleted, either consult your network administrator or upgrade your compact flash memory card to a size that can accommodate both the existing files and the new system image.

Optional Copy a file to a server before deleting the file from flash memory. Step 8 Optional Repeat Step 7 for each file that you identified in Step 6. Use this command to delete a file in flash memory:. Step 10 Repeat Step 9 for each file that you identified in Step 6. Step 11 dir flash0 :. Step 12 From the displayed output of the dir flash0: command, compare the number of bytes available to the size of the system image to which you want to upgrade.

This section describes how to copy the system image into the compact flash memory card for your router. Choose one of the following methods:. This is the recommended and most common method of upgrading the system image. The following details the logistics of upgrading the system image. Tip For more detailed information on how to perform the prerequisites, see the Software Installation and Upgrade Procedure tech note. When prompted, enter the filename of the Cisco IOS software image to be installed.

When prompted, enter the filename as you want it to appear on the router. If the error message does not appear, enter no when prompted to erase the flash memory before copying. Enter your password if prompted:. Step 2 copy tftp flash Use one of these commands to copy a file from a server to flash memory:. Note The filename is case sensitive. Step 5 When prompted, enter the filename as you want it to appear on the router.

Typically, the same filename is entered as was used in Step 4 :. Step 7 If the error message does not appear, enter no when prompted to erase the flash memory before copying:. Connect the TFTP server to a fixed network port on your router.

Therefore, only a fixed port on your router can be used for TFTP download. This can be either a fixed Ethernet port on the router or one of the Gigabit Ethernet ports on routers equipped with them. Note You can use this command only to download files to the router. You cannot use tftpdnld to get files from the router. Enter ROM monitor mode. Use the set command to verify that you have set the variables correctly. Use the tftpdnld [-r] command to download the image. Step 1 Enter ROM monitor mode.

Step 2 Set the IP address of the router. Step 3 Set the IP subnet mask. Step 4 Set the default gateway address. Step 6 Set the name and directory location to which the image file will be downloaded onto the router. Step 7 Optional Set the input port to use a Gigabit Ethernet port. Step 8 Optional Set the Ethernet media type. Step 9 Optional Decide whether the router will perform a checksum test on the downloaded image. The default is 7 attempts. Step 11 Optional Set the amount of time, in seconds, before the download process times out.

The default is seconds 40 minutes. The following example shows seconds 30 minutes :. Step 12 Optional Configure the print variable. Step 13 Use the set command to display the ROM monitor environment variables to verify that you have configured them correctly. Step 14 Download the system image, as specified by the ROM monitor environmental variables, using the tftpdnld [-r] command.

Without the -r option, the command downloads the specified image and saves it in flash memory, deleting all existing data in all partitions in flash memory. Using the -r option downloads and boots the new software but does not save the software to flash memory. Entering y confirms that you want to continue with the TFTP download. Because the system image is stored on an external CompactFlash memory card, you can use a PC with a compact flash card reader to format the card and copy a new system image file onto the card.

However, this upgrade method is not commonly used. Step 1 Remove the compact flash memory card from the router. Step 2 Insert the card into the compact flash card reader on a PC. Step 3 Use the PC to copy the system image file to the compact flash memory card. Step 4 Remove the card from the compact flash card reader. Step 5 Insert the compact flash memory card into the router. This section describes how to load the new system image that you copied into flash memory.

To load the new system image from the Cisco IOS software, follow these steps. Optional boot system flash0: system-image-filename. Optional Repeat to specify the order in which the router should attempt to load any backup system images. If the last digit in the configuration register is 0 or 1, proceed to Step 9. However, if the last digit in the configuration register is between 2 and F, proceed to Step When prompted to save the system configuration, enter no.

When prompted to confirm the reload, enter y. Step 1 dir flash Note Determine whether the new system image is the first file or the only file listed in the dir flash0: command output is not required if it is the first file or only file listed. Step 2 configure terminal. Use this command to enter global configuration mode:. Step 3 no boot system. Use this command to delete all entries in the bootable image list, which specifies the order in which the router attempts to load the system images at the next system reload or power cycle:.

Step 4 If the new system image is the first file or the only file displayed in the dir flash0: command output, you do not need to perform the following step. Use this command to load the new system image after the next system reload or power cycle. Step 5 Optional Repeat to specify the order in which the router should attempt to load any backup system images.

Step 6 exit. Use this command to exit global configuration mode:. Step 7 show version. Use this command to display the configuration register setting:. Step 8 If the last digit in the configuration register is 0 or 1, proceed to Step 9. Step 9 configure terminal. Step 10 config-register 0x Use this command to set the configuration register so that, after the next system reload or power cycle, the router loads a system image from the boot system commands in the startup configuration file:.

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