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CCNP Routing and Switching SWITCH 300-115 Official Cert Guide: Switch Port Configuration

By David Hucaby
Dec 18, 2014

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CCNP Routing and Switching SWITCH 300-115 Official Cert Guide

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Exam Preparation Tasks

Review All Key Topics

Review the most important topics in the chapter, noted with the Key Topic icon in the outer margin of the page. Table 3-8 lists a reference of these key topics and the page numbers on which each is found.

Table 3-8 Key Topics for Chapter 3

Key Topic Element	Description	Page Number
Paragraph	Describes the characteristics of Ethernet switching	59
Paragraph	Discusses Ethernet scaling	61
Paragraph	Covers 10-Gigabit Ethernet	62
Paragraph	Explains Ethernet autonegotiation	64
Paragraph	Covers interface selection for configuration	66
Paragraph	Explains how to configure the port speed	68
Paragraph	Explains how to configure the port duplex mode	69
Paragraph	Explains how to configure port error detection	69
Paragraph	Explains how to verify the port state	71
Paragraph	Explains how to verify port speed and duplex mode	72
Paragraph	Covers CDP neighbor discovery	73
Paragraph	Covers LLDP neighbor discovery	75
Paragraph	Describes Power over Ethernet for Cisco IP phones	77
Table 3-7	Lists IEEE 802.3af PoE device classes	79

Complete Tables and Lists from Memory

There are no memory tables in this chapter.

Define Key Terms

Define the following key terms from this chapter, and check your answers in the glossary:

CSMA/CD
duplex mode
autonegotiation
duplex mismatch
IEEE 802.3
CDP
LLDP
TLV
Power over Ethernet (PoE)
power class

Use 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 remember the basic keywords that are needed.

To test your memory of the port configuration commands, cover the right side of Tables 3-9 through 3-11 with a piece of paper, read the description on the left side, and then see how much of the command you can remember.

Table 3-9 Switch Port Configuration Commands

Task	Command Syntax
Select a port.	Switch(config)# interface type member/module/number
Select multiple ports.	Switch(config)# interface range type member/module/number [, type member/module/number ...] or Switch(config)# interface range type member/module/first-number - last-number
Define an interface macro.	Switch(config)# define interface-range macro-name type member/module/number [, type member/module/number ...] [ type member/module/first-number - lastnumber ] [...] Switch(config)# interface range macro macro-name
Identify port.	Switch(config-if)# description description-string
Set port speed.	Switch(config-if)# speed {10 \| 100 \| 1000 \| auto}
Set port mode.	Switch(config-if)# duplex {auto \| full \| half}
Detect port error conditions.	Switch(config-if)# errdisable detect cause [all \| cause name]
Automatically recover from errdisable.	Switch(config-if)# errdisable recovery cause [ all \| cause name ] Switch(config-if)# errdisable recovery interval seconds
Manually recover from errdisable.	Switch(config-if)# shutdown Switch(config-if)# no shutdown
Display ports in errdisable state	Switch(config)# show interface status err-disabled

Table 3-10 Neighbor Discovery Commands

Task	Command Syntax
Display CDP neighbor information.	Switch# show cdp neighbors [ type member/module/number ] [ detail ]
Control CDP operation globally.	Switch(config)# [no] cdp run
Control CDP operation on an interface.	Switch(config-if)# [ no ] cdp enable
Display LLDP neighbor information.	Switch(config)# show lldp neighbors [ type member/module/number ] [ detail ]
Control LLDP operation globally.	Switch(config)# [ no ] lldp run
Control LLDP operation on an interface.	Switch(config-if)# [ no ] lldp { receive \| transmit }

Table 3-11 Power over Ethernet Commands

Task	Command Syntax
Set PoE behavior.	Switch(config-if)# power inline { auto \| static } [ max milliwatts ]
Disable PoE on a switch port	Switch(config-if)# power inline never
Display PoE status.	Switch# show power inline [ type member/mod/num ] [ detail ]

Remember that the CCNP exam focuses on practical or hands-on skills that are used by a networking professional. Therefore, you should remember the commands needed to configure and test a switch interface.

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