Upgrading IOS in L2 switches

[Kundan Prasad]

Copy the new IOS image to switch

copy tftp: flash:

verify the image

verify /md5 flash:IOS-NAME

Configure the boot path to new IOS

boot system switch all flash:/PATH

Verify the path

sh boot

Save the config

write

Now you are all set to reboot the device !

[Leo Laohoo]

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@Kundan Prasad wrote:

Copy the new IOS image to switch

copy tftp: flash: 

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OMfG!  Who's the genius who came up with this method?

There is one big fat flaw with this:  How do you know the file copied is compatible with the appliance?

Copying the BIN file from one switch to another is not only "old school" but also inherently dangerous and will send the appliance into ROMmon.  

[Kundan Prasad]

@Leo Laohoo

Kindly check the link,

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-2950-series-switches/41542-191.html

[Leo Laohoo]

Please don't reply with a cut-and-paste.   

The link you've posted is for an ancient 2950 switch.  

The use of the "copy" command to upgrade Cat2K and/or Cat3K have long been out of fashion.  Cisco's Release Notes no longer recommend anyone using this method.  

[Kundan Prasad]

@Leo Laohoo

could you please post the recommended one..

[Leo Laohoo]

For Cisco IOS, read THIS.

For Cisco IOS-XE, read THIS (IOS-XE version 3.X only).

For Cisco IOS-XE (IOS-XE verison 16.X.X) read THIS.

[Kundan Prasad]

Thanks @Leo Laohoo