xmodem升级IOS的详细步骤

　　xmodem升级IOS，按照以下的步骤升级：

　　QuickTip added by adhawkin on Mon Apr 30 12:11:36 PDT 2002

　　Recovery from booting to rommon

　　Introduction: What does this document describe? How to recover from botting into rommon mode on 3600 series routers. What problem is the customer having that this document will solve? Customer copied an IOS image that required more flash than they had available on their 3640 router.

　　Versions: What hardware and software versions did you use to develop this document? Customer was suing 11.2(16) and wanted to upgrade to 12.1(4.5)

　　Use this field to input your configuration steps or

　　problem resolution.

　　The steps below outline how to connect and download another image using

　　XMODEM through the console port of the router.

　　How to download an image using xmodem when routers 3600 and 2600 goes into

　　ROMMON prompt?

　　Problem:- The router is in ROMMON prompt and when it is reloaded it again

　　goes into ROMMON prompt.

　　Solution:-

　　To solve the above problem, you can download an image to the 2600 and 3600

　　using the console port of the router.

　　The procedure uses the default console speed of 9600 bits per second.

　　Xmodem is a slow transfer protocol. Increasing the console speed (which is

　　possible

　　for the Cisco 2600 and 3600 series routers) helps decrease the time it