Configuring Layer 3 (Interface) Mode........................................................................................ 382Egress Interface Selection (EIS)........................................................................................................ 383Important Points to Remember................................................................................................. 383Configuring EIS........................................................................................................................... 383Management Interfaces....................................................................................................................384Configuring Management Interfaces......................................................................................... 384Configuring a Management Interface on an Ethernet Port...................................................... 386VLAN Interfaces.................................................................................................................................387Loopback Interfaces......................................................................................................................... 387Null Interfaces...................................................................................................................................388Port Channel Interfaces....................................................................................................................388Port Channel Definition and Standards..................................................................................... 388Port Channel Benefits.................................................................................................................389Port Channel Implementation....................................................................................................389Interfaces in Port Channels........................................................................................................ 389Configuration Tasks for Port Channel Interfaces......................................................................390Creating a Port Channel............................................................................................................. 390Adding a Physical Interface to a Port Channel.......................................................................... 390Reassigning an Interface to a New Port Channel......................................................................392Configuring the Minimum Oper Up Links in a Port Channel.................................................... 393Adding or Removing a Port Channel from a VLAN................................................................... 393Assigning an IP Address to a Port Channel................................................................................ 395Deleting or Disabling a Port Channel.........................................................................................395Load Balancing Through Port Channels.................................................................................... 395Changing the Hash Algorithm.................................................................................................... 395Bulk Configuration............................................................................................................................ 397Interface Range........................................................................................................................... 397Bulk Configuration Examples..................................................................................................... 397Defining Interface Range Macros.................................................................................................... 399Define the Interface Range.........................................................................................................399Choosing an Interface-Range Macro........................................................................................ 399Monitoring and Maintaining Interfaces............................................................................................399Maintenance Using TDR............................................................................................................. 401Fanning out 40G Ports Dynamically................................................................................................ 401Splitting QSFP Ports to SFP+ Ports.................................................................................................. 402Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................403Important Points to Remember................................................................................................. 404Example Scenarios......................................................................................................................404Link Dampening................................................................................................................................406Important Points to Remember................................................................................................. 406Enabling Link Dampening.......................................................................................................... 406Link Bundle Monitoring.................................................................................................................... 40814