Concept Guide

Loopback Interfaces...................................................................................................................................................... 423
Null Interfaces................................................................................................................................................................ 424
Port Channel Interfaces................................................................................................................................................ 424
Port Channel Denition and Standards.................................................................................................................424
Port Channel Benets............................................................................................................................................. 424
Port Channel Implementation.................................................................................................................................424
Interfaces in Port Channels.................................................................................................................................... 425
Conguration Tasks for Port Channel Interfaces.................................................................................................425
Creating a Port Channel..........................................................................................................................................426
Adding a Physical Interface to a Port Channel.....................................................................................................426
Reassigning an Interface to a New Port Channel................................................................................................428
Conguring the Minimum Oper Up Links in a Port Channel.............................................................................. 428
Adding or Removing a Port Channel from a VLAN............................................................................................. 429
Assigning an IP Address to a Port Channel.......................................................................................................... 430
Deleting or Disabling a Port Channel.....................................................................................................................430
Load Balancing Through Port Channels................................................................................................................430
Changing the Hash Algorithm.................................................................................................................................431
Bulk Conguration......................................................................................................................................................... 432
Interface Range........................................................................................................................................................432
Bulk Conguration Examples..................................................................................................................................432
Dening Interface Range Macros................................................................................................................................ 434
Dene the Interface Range.................................................................................................................................... 434
Choosing an Interface-Range Macro.................................................................................................................... 434
Monitoring and Maintaining Interfaces........................................................................................................................434
Maintenance Using TDR.........................................................................................................................................435
Conguring wavelength for 10–Gigabit SFP+ optics................................................................................................436
Link Dampening..............................................................................................................................................................436
Important Points to Remember..............................................................................................................................437
Conguration Example of Link Dampening...........................................................................................................437
Enabling Link Dampening........................................................................................................................................439
Link Bundle Monitoring................................................................................................................................................. 440
Using Ethernet Pause Frames for Flow Control......................................................................................................... 441
Enabling Pause Frames............................................................................................................................................441
Congure the MTU Size on an Interface....................................................................................................................442
Port-Pipes.......................................................................................................................................................................443
Auto-Negotiation on Ethernet Interfaces................................................................................................................... 443
Setting the Speed of Ethernet Interfaces............................................................................................................ 443
Set Auto-Negotiation Options................................................................................................................................444
View Advanced Interface Information.........................................................................................................................445
Conguring the Interface Sampling Size.............................................................................................................. 445
Conguring the Trac Sampling Size Globally...........................................................................................................447
Dynamic Counters......................................................................................................................................................... 448
Clearing Interface Counters....................................................................................................................................448
Compressing Conguration Files................................................................................................................................. 449
22 Internet Protocol Security (IPSec).......................................................................................................... 452
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