But the network was groaning. Every time a switch rebooted, it felt like an eternity as the system decompressed that massive file into RAM. Memory was tight, and the upcoming Cisco Release 17.15 loomed like a storm cloud—the day Bundle Mode would finally be retired.
He typed the command to initiate the conversion: request platform software package expand switch all .
To understand why converting is better, you must look at how each mode handles the switch memory during a boot cycle. Bundle Mode (.bin)
Why Converting Cisco IOS-XE from BIN to PKG Mode Will Upgrade Your Network Efficiency
Cisco does not officially support "converting" BIN to PKG because they are different distribution mechanisms. However, Cisco provides the (also known as the COP file generator for certain lines) and the Collaboration Endpoint software package creator . cisco convert bin to pkg better
The switch must be directed to boot from the newly created configuration map rather than the original bundle.
for modern Cisco IOS XE platforms like the Catalyst 3850 and 9000 series. This "conversion" essentially extracts the monolithic binary into its component packages, leading to faster boot times and better memory utilization. Why Convert to Install Mode? Performance
Switching from a single .bin file to extracted .pkg files provides substantial benefits across performance, reliability, and feature availability. 1. Faster Boot Times
Network administrators working with modern Cisco Catalyst switches—such as the 3650, 3850, and 9000 series—often face a choice during upgrades: boot the switch using a monolithic .bin file, or unpack it into individual .pkg (package) files. While both methods successfully boot the Cisco IOS-XE operating system, converting your .bin file to .pkg files and running the switch in offers significant technical advantages over running it in Bundle Mode . The Two Execution Modes: Bundle vs. Install But the network was groaning
While less common, there are scenarios where you might need to go the other way: consolidating a set of .pkg files back into a single, monolithic .bin file. This is useful for creating a master backup or for preparing an image to be used on a different device that requires a .bin file.
This means the .bin file is corrupted or was not downloaded fully from Cisco.
The most common and straightforward method is using the install add file activate commit command sequence, but this requires your device to be in Install Mode first.
chmod +x c2p_converter.py python3 c2p_converter.py sx20_firmware.bin safe_update.pkg He typed the command to initiate the conversion:
Here is a helpful guide on how to perform this conversion safely and correctly.
def convert_bin_to_pkg(bin_path, output_path=None): if not is_valid_bin(bin_path): sys.exit("Error: Not a valid Cisco BIN file")
Install mode unlocks a suite of precise software management commands under the request platform software package or install syntax. This allows you to perform clean upgrades, validate packages before activation, and rollback to a previous software state instantly if an update fails. 4. Support for In-Service Software Upgrades (ISSU)
If you have an FMC (formerly FireSIGHT), this is the automated way.
Bundle Mode is a "memory hog" because it keeps the entire uncompressed image in RAM. Install Mode only loads the specific packages it needs, freeing up RAM for actual network traffic and services.