I have 1500 new 2960 switches, and want to upgrade image.
Do it manually seems time consuming, so I looked at Ciscos website to do this with DHCP on bootup. It gets the IP, tftp and start to download the image, then it stops. I have tried to set the hex value but still got problems.
So first the client switch has to load a config file and later it will download the image.
Before following the steps in this table, you must create a text file (for example, autoinstall_dhcp) that will be uploaded to the switch. In the text file, put the name of the image that you want to download (for example, c37502970-ipservices-mz.122-44.3.SE.tar). This image must be a tar and not a bin file.
then the client switch can do:
This example uses a Layer 3 SVI interface on VLAN 99 to enable DHCP-based autoconfiguration with a saved configuration:
Switch# configure terminal
Switch(conf)# boot host dhcp
Switch(conf)# boot host retry timeout 300
Switch(conf)# banner config-save ^C Caution - Saving Configuration File to NVRAM May Cause
You to Nolonger Automatically Download Configuration Files at Reboot^C
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