With regards to CCIE lab exam - do you recommend any books for each topic which are listed below :. Buy or Renew. Find A Community. Cisco Community. Join us in congratulating October's Spotlight Award Winners! Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for.
Search instead for. Did you mean:. All Community This category This board. Hi, I have confirmed from GNS3 site that it would not support images pertaining to above mentioned router series viz.
Thanks in advance, Sai Solved! Labels: Labels: Other Security Topics. All forum topics Previous Topic Next Topic. Accepted Solutions. Philip D'Ath. In response to Philip D'Ath. Hi Dath, Thanks for your response. Nevertheless, I have setup series on GNS3 to run my tests. Btw, do you know any online sites providing rack rentals at good deal? Br, Sai. In response to msaikumar I always use Amazon AWS. Hi Dath, Thanks for the response I shall check on it, also I came across ipexpert.
With regards to CCIE lab exam - do you recommend any books for each topic which are listed below : 1. Configures how the router displays file download progress. This is the default setting. The default is 7. Length of time, in seconds, before the download process times out. The default is 2, seconds 40 minutes. Whether or not the router performs a checksum test on the downloaded image:. Step 1 Use the appropriate commands to enter all the required variables and any optional variables described in preceding sections.
Step 2 Enter the tftpdnld command as follows:. Note The -r variable is optional. Entering this variable downloads and boots the new software but does not save the software to flash memory. You can then use the image that is in flash memory the next time you enter the reload command.
Step 3 If you are sure that you want to continue, enter y in response to the question in the output:. If you mistakenly entered yes, you can enter Ctrl-C or Break to stop the transfer before the flash memory is erased.
You can view or modify the virtual configuration register from either the ROM monitor or the operating system software. Within the ROM monitor, you can change the configuration register by entering the register value in hexadecimal format, or by allowing the ROM monitor to prompt you for the setting of each bit. To change the virtual configuration register from the ROM monitor manually, enter the confreg command, followed by the new value of the register in hexadecimal format, as shown in the following example:.
The value is always interpreted as hexadecimal. The new virtual configuration register value is written into NVRAM but does not take effect until you reset or reboot the router. Entering the confreg command without an argument displays the contents of the virtual configuration register and a prompt to alter the contents by describing the meaning of each bit.
In either case, the new virtual configuration register value is written into NVRAM but does not take effect until you reset or reboot the router. The following display shows an example of entering the confreg command:. You can use console download, a ROM monitor function, to download either a software image or a configuration file over the router console port.
After download, the file is either saved to the CompactFlash memory module or to main memory for execution image files only. Use console download when you do not have access to a TFTP server. The following are the syntax and descriptions for the xmodem console download command:. Performs the download using bit cyclic redundancy check CRC error checking to validate packets.
Default is 8-bit CRC. Sets the router to perform the download using Ymodem protocol, the default is Xmodem protocol. The protocols differ as follows:. Image is loaded into DRAM for execution. The default is to load the image into flash memory. Image is loaded into DRAM without being executed. Name of the system image file or the system configuration file. Step 1 Move the image file to the local drive where Xmodem will execute. Step 2 Enter the xmodem command.
Because the ROM monitor console download uses the console to perform the data transfer, when an error occurs during a data transfer, error messages are only displayed on the console once the data transfer is terminated.
If you have changed the baud rate from the default rate, the error message is followed by a message telling you to restore the terminal to the baud rate specified in the configuration register. If you enter a debugging command and Cisco IOS crash information is not available, you see the following error message:. You must set the configuration register to a value from 0x2 to 0xF for the router to boot a Cisco IOS image from flash memory upon startup or reloading.
The following example shows how to reset the configuration register and cause the router to boot a Cisco IOS image stored in flash memory:. You must reset or power cycle for new configuration register to take effect:. The router will boot the Cisco IOS image in flash memory. The configuration register will change to 0x the next time the router is reset or power cycled. Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book.
PDF - Complete Book 2. Updated: February 18, Chapter: ROM Monitor. ROM Monitor. Required Variables These variables must be set with these commands before you use the tftpdnld command: Variable. Optional Variables These variables can be set with these commands before you use the tftpdnld command: Variable.
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