iTable of Contents1 IRF Configuration ······································································································································1-1Introduction to IRF···································································································································1-1Overview··········································································································································1-1Advantages······································································································································1-1Application ·······································································································································1-2Basic Concepts of IRF ····························································································································1-3IRF Working Process ······························································································································1-5Physical Connections ······················································································································1-5Topology Collection ·························································································································1-6Role Election ···································································································································1-6IRF Management and Maintenance ································································································1-7IRF Multi-Active Detection Mechanism ···························································································1-8IRF Configuration Task List ····················································································································1-8Switching Operating Mode······················································································································1-9Configuring IRF ·····································································································································1-10Setting a Member ID for a Device ·································································································1-10Specifying a Priority for an IRF Member ·······················································································1-11Configuring IRF Ports ····················································································································1-11Specifying the Preservation Time of IRF Bridge MAC Address ····················································1-12Setting the Delay Time for the Link Layer to Report a Link-Down Event······································1-13Configuring MAD Detection ···········································································································1-14Accessing an IRF ··································································································································1-18Accessing the Master ····················································································································1-18Accessing a Slave ·························································································································1-18Displaying and Maintaining IRF ············································································································1-19IRF Configuration Examples ·················································································································1-20BFD-MAD Enabled IRF Configuration Example ···········································································1-20LACP-MAD Enabled IRF Configuration Example ·········································································1-22