Need to add arround 2500 subnets' IP addresses through excel sheet.
here I am facing problem with lot of manual work, Can anyone help me on this.
Are you trying to add invidual addresses or subnets? If you are trying to add invidual addresses, you can do this with the subnet import wizard. If you are trying to create the subnets, do you have the netmask in /XX CIDR format or subnet mask 255.255.255.0 format? If the former, you can do this directly in the import wizard of IPAM.
I have the excel sheet in below format for each locations.
By the look of it, you have individual IP Addresses listed, for this you can import them using the spreadsheet. Have you try the Spreadsheet import?