Exam Preparation Tasks
Review All Key Topics
Review the most important topics in the chapter, noted with the key topics icon in the outer margin of the page. Table 6-6 lists a reference of these key topics and the page numbers on which each is found.
Table 6-6. Key Topics for Chapter 6
|
Key Topic Element |
Description |
Page Number |
|
Paragraph |
Discusses aggregating links into EtherChannels |
108 |
|
Paragraph |
Explains how traffic is distributed in an EtherChannel |
109 |
|
Table 6-3 |
Lists EtherChannel load-balancing methods |
111 |
|
Paragraph |
Describes the PAgP negotiation protocol |
113 |
|
Paragraph |
Describes the LACP negotiation protocol |
113 |
|
Paragraph |
Explains PAgP configuration |
114 |
|
Paragraph |
Explains LACP configuration |
115 |
|
Paragraph |
Discusses rules of thumb for proper EtherChannel operation |
116 |
Complete Tables and Lists from Memory
Print a copy of Appendix C, "Memory Tables," (found on the CD), or at least the section for this chapter, and complete the tables and lists from memory. Appendix D, "Memory Tables Answer Key," also on the CD, includes completed tables and lists to check your work.
Define Key Terms
Define the following key terms from this chapter, and check your answers in the glossary:
EtherChannel, PAgP, LACP
Command Reference to Check Your Memory
This section includes the most important configuration and EXEC commands covered in this chapter. It might not be necessary to memorize the complete syntax of every command, but you should be able to remember the basic keywords that are needed.
To test your memory of the commands related to EtherChannels, cover the right side of Table 6-7 with a piece of paper, read the description on the left side, and then see how much of the command you can remember.
Table 6-7. EtherChannel Configuration Commands
|
Task |
Command Syntax |
|
Select a load-balancing method for the switch. |
port-channel load-balance method |
|
Use a PAgP mode on an interface. |
channel-protocol pagp channel-group number mode {on | {{auto | desirable} [non-silent]}} |
|
Assign the LACP system priority. |
lacp system-priority priority |
|
Use an LACP mode on an interface. |
channel-protocol lacp channel-group number mode {on | passive | active} lacp port-priority priority |
Remember that the CCNP exam focuses on practical or hands-on skills that are used by a networking professional. For the skills covered in this chapter, remember that an EtherChannel is called a port-channel interface when you are configuring it. When you are displaying information about an EtherChannel, begin the commands with the show etherchannel keywords.