Changing the Compact Flash on Cisco 2821 Call Manager Express
I'm gonna have to swap the compact flash on a Cisco 2821 who is serving as the Call Manager express and the Dialling Router.
What's the best way of approaching this? As far as i know it doesn't have a second slot? And i just can't plug it in and copy everything from 1 flash to another.
Must i copy all of the files on the flash to my tftp or? How can i be sure that everything will be copied to the new flash? I will be creating downtime i suppose? since when i'm copying towards the new flash the router will not properly work with the previous configuration
So i figured out that i can use the archive tar /create command:
To copy the entire flash towards TFTP:
archive tar /create tftp://X.X.X.X/flash.tar flash:
Now i will have to insert the new flash and probably format it first towards the correct file systems. Then i will have to use the next archive command:
archive tar /xtract "Here i am unsure of the syntax, i want to be copying and extracting the tar I backed up from the old flash"
After these steps are complete can i just reboot the router with the new flash card, won't there be any issues, since the startup config is on the NVRAM it will load the config properly, and i haven't seen any boot parameters but they shouldn't pose any issues since i'm not changing the flash slot.
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