Intelligent Resilient Framework (IRF) is a proprietary software virtualization technology originally developed by Huawei 3Com.
[1] This technology is similar to the Cisco Virtual PortChannel (vpC).
This technology was originally developed by 3Com and released in 2003 as XRN (eXpandable Resilient Networking).
[2] When HP Inc. purchased 3Com in April 2010,[3] the technology was renamed to IRF.
[4] In simulated tests, IRF was found to be resilient to severe induced failures.