Question about Cisco 2691 Series IOS
Recovering Cisco IOS Software imagesIf your Cisco router experiences difficulties and no longer contains avalid Cisco IOS software image in flash memory, you can download a newCisco IOS image using one of the following ROM monitor commands:
•xmodem—(AllCisco 2600 series routers) Use this command to copy a Cisco IOS imagefrom the console, if the computer attached to your console has aterminal emulator with Xmodem capability. See the "Copying an Image from the Console Using the xmodem Command" procedure.
Note Downloadinga Cisco IOS image from a console is very slow. This procedure should beused only in an emergency and is not recommended for normal Cisco IOSimage upgrades.
For the fastest possible download from a console, set the console speed to 115200 bps by using the confreg ROM monitor command. See the "Configuration Register Commands" procedure.
•tftpdnld—(ExceptCisco 2691) Use this command to copy a Cisco IOS image from a TFTPserver that is accessible through the FastEthernet 0/0, Ethernet 0/0,or Token Ring 0/0 port. See the "Copying an Image from a TFTP Server Using the tftpdnld Command" procedure.
Note Thetftpdnld command is not available on the Cisco 2691 router. Therecommended method for installing a Cisco IOS image on a Cisco 2691router is from a CompactFlash memory card loaded in the externalCompactFlash memory card slot. See the "Entering Boot Commands" procedure.
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Posted on Mar 12, 2009
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Posted on Jan 02, 2017
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