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UPGRADING FLASH MEMORY IN CISCO 2620/2620XM ROUTERS
Hi ,
Is there a way to upgrade flash memory on 2620 router without using console cable connection.
Since the router is on a LIVE network , i need to do this upgrade without loosing the IP connectivity.
Once i copy the flash to the tftp server , i have to remove the old flash SIMM & install the new one. During this time the router needs to be turned off and the module should then be replaced.
So i will be needing a console cable to gain access to the router when it boots up in the rommon mode. Instead of doing this way if there a way to do this flash memory upgrade so that the router locates the tftp server automatically when it reboots after installing the new flash SIMM.
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Answers
Hi,
so in the below command do i have to give the path of the tftp server so that i finds the tftp ser like what i have given below
router(config)#boot system tftp://192.168.1.2/c2800nm
Will this find the tftp server when it is powered off and turned on after replacing the new SIMM.
And do i have to unplug all the cable except the fast Ethernet that is connected to the Tftp server.
1. Yes, you have to put that command.
2. You have to change the config-register value as well to tell router to boot from network server. Use a "sh ver" and check in the last line what the value is, it should 0x2102. You have to change it to 0x210F
Router(config)# config-register 0X210F
wr mem
and reload the router........ make sure ur tftp has read/write/upload/download
if you ever ger stuck in BOOT ROM use the the command confreg to boot it back to old flash image.........
After you are done with the new flash image, make sure to change the config-register value back to 0x2102.
You don't need to touch any cables........
after u change the value and put the command of tftp, the next time u switch on the router the boot rom dictates the router using the value to look in for ur tftp server and the boot command tells where to find it.......
hi,
Router2620 (config)#no boot system
Router2620 (config)#boot system tftp xxxxxxxxxxxxxxxxxxx.bin ip-address-tftp
Router2620 (config)#config-register 0X210F
Router2620 (config)#end
Router2620#copy run start
i', not going to reebot after the above commands , since after saving the above commands i'm going to turn off the router open the cover and replace new ram & flash SIMM , and then turn on the router .
So only after this the router is going to look for the tftp server to boot the image from.
Please check my above commands an verify whether they are correct.
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by: surbabu140977Posted on 2009-11-03 at 08:05:29ID: 25730330
the command boot system tftp would load the image from tftp server instead of flash, when there will be no image in the flash....... once booted do whatever you want to like with the new flash.....