Cisco Catalyst 2960-XR Manuale utente

Catalyst 2960-XR Switch Interface and Hardware Component

Configuration Guide, Cisco IOS Release 15.0(2)EX1

First Published: August 08, 2013

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Text Part Number: OL-29420-01

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CONTENTS

Preface

Preface ix

Document Conventions ix

Related Documentation xi

Obtaining Documentation and Submitting a Service Request xi

CHAPTER 1

Using the Command-Line Interface 1

Information About Using the Command-Line Interface 1

Command Modes 1

Using the Help System 3

Understanding Abbreviated Commands 4

No and default Forms of Commands 4

CLI Error Messages 4

Configuration Logging 5

How to Use the CLI to Configure Features 5

Configuring the Command History 5

Changing the Command History Buffer Size 6

Recalling Commands 6

Disabling the Command History Feature 7

Enabling and Disabling Editing Features 7

Editing Commands through Keystrokes 8

Editing Command Lines That Wrap 9

Searching and Filtering Output of show and more Commands 10

Accessing the CLI through a Console Connection or through Telnet 11

CHAPTER 2

Configuring Interface Characteristics 13

Finding Feature Information 13

Information About Configuring Interface Characteristics 13

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Interface Types 13

Port-Based VLANs 14

Switch Ports 14

Access Ports 14

Trunk Ports 15

Tunnel Ports 15

Routed Ports 15

Switch Virtual Interfaces 16

SVI Autostate Exclude 16

EtherChannel Port Groups 17

Power over Ethernet Ports 17

Using the Switch USB Ports 18

USB Mini-Type B Console Port 18

Console Port Change Logs 18

USB Type A Ports 19

Interface Connections 19

Interface Configuration Mode 20

Default Ethernet Interface Configuration 21

Interface Speed and Duplex Mode 22

Speed and Duplex Configuration Guidelines 22

IEEE 802.3x Flow Control 23

Layer 3 Interfaces 23

How to Configure Interface Characteristics 24

Configuring Interfaces Procedure 24

Adding a Description for an Interface 25

Configuring a Range of Interfaces 26

Configuring and Using Interface Range Macros 27

Configuring Ethernet Interfaces 29

Setting the Interface Speed and Duplex Parameters 29

Configuring IEEE 802.3x Flow Control 30

Configuring Layer 3 Interfaces 31

Configuring SVI Autostate Exclude 33

Shutting Down and Restarting the Interface 34

Configuring the Console Media Type 35

Configuring the USB Inactivity Timeout 36

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Contents

Monitoring Interface Characteristics 37

Monitoring Interface Status 37

Clearing and Resetting Interfaces and Counters 38

Configuration Examples for Interface Characteristics 38

Adding a Description to an Interface: Example 38

Identifying Interfaces on a Stack-Capable Switch: Examples 39

Configuring a Range of Interfaces: Examples 39

Configuring and Using Interface Range Macros: Examples 39

Setting Interface Speed and Duplex Mode: Example 40

Configuring Layer 3 Interfaces: Example 40

Configuring the Console Media Type: Example 40

Configuring the USB Inactivity Timeout: Example 41

Additional References for the Interface Characteristics Feature 41

Feature History and Information for Configuring Interface Characteristics 42

CHAPTER 3

Configuring Auto-MDIX 43

Prerequisites for Auto-MDIX 43

Restrictions for Auto-MDIX 43

Information about Configuring Auto-MDIX 44

Auto-MDIX on an Interface 44

How to Configure Auto-MDIX 44

Configuring Auto-MDIX on an Interface 44

Monitoring Auto-MDIX 45

Example for Configuring Auto-MDIX 46

Feature History and Information for Auto-MDIX 46

CHAPTER 4

Configuring Ethernet Management Port 47

Finding Feature Information 47

Prerequisites for Ethernet Management Ports 47

Information about the Ethernet Management Port 47

Ethernet Management Port Direct Connection to a Switch 48

Ethernet Management Port Connection to Stack Switches using a Hub 48

Ethernet Management Port and Routing 48

Supported Features on the Ethernet Management Port 49

How to Configure the Ethernet Management Port 50

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Contents

Disabling and Enabling the Ethernet Management Port 50

Additional References 51

Feature Information for Ethernet Management Ports 52

CHAPTER 5

Configuring LLDP, LLDP-MED, and Wired Location Service 53

Finding Feature Information 53

LLDP, LLDP-MED, and Wired Location Service Overview 53

LLDP 53

LLDP Supported TLVs 54

LLDP and Cisco Switch Stacks 54

LLDP and Cisco Medianet 54

LLDP-MED 54

LLDP-MED Supported TLVs 55

Wired Location Service 56

Default LLDP Configuration 57

Configuration Guidelines 57

How to Configure LLDP, LLDP-MED, and Wired Location Service 58

Enabling LLDP 58

Configuring LLDP Characteristics 59

Configuring LLDP-MED TLVs 61

Configuring Network-Policy TLV 63

Configuring Location TLV and Wired Location Service 65

Enabling Wired Location Service on the Switch 68

Configuration Examples for LLDP, LLDP-MED, and Wired Location Service 69

Configuring Network-Policy TLV: Examples 69

Monitoring and Maintaining LLDP, LLDP-MED, and Wired Location Service 70

Additional References for LLDP, LLDP-MED, and Wired Location Service 71

Feature Information for LLDP, LLDP-MED, and Wired Location Service 72

CHAPTER 6

Configuring System MTU 73

Finding Feature Information 73

Information about the MTU 73

System MTU Values 73

System MTU Guidelines 74

How to Configure MTU 74

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Contents

Configuring the System MTU 74

Configuration Examples for System MTU 76

Additional References for System MTU 76

Feature Information for System MTU 77

CHAPTER 7

Configuring Internal Power Supplies 79

Information About Internal Power Supplies 79

How to Configure Internal Power Supplies 79

Configuring an Internal Power Supply 79

Monitoring Internal Power Supplies 80

Configuration Examples for Internal Power Supplies 80

Feature History and Information for Internal Power Supplies 81

CHAPTER 8

Configuring PoE 83

Finding Feature Information 83

Information about PoE 83

Power over Ethernet Ports 83

Supported Protocols and Standards 84

Powered-Device Detection and Initial Power Allocation 84

Power Management Modes 86

Power Monitoring and Power Policing 87

Maximum Power Allocation (Cutoff Power) on a PoE Port 87

Power Consumption Values 88

How to Configure PoE 88

Configuring a Power Management Mode on a PoE Port 88

Budgeting Power for Devices Connected to a PoE Port 90

Budgeting Power to All PoE ports 90

Budgeting Power to a Specific PoE Port 91

Configuring Power Policing 92

Monitoring Power Status 95

Configuration Examples for Configuring PoE 95

Budgeting Power: Example 95

Feature Information for PoE 95

CHAPTER 9

Configuring EEE 97

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Contents

Finding Feature Information 97

Information About EEE 97

EEE Overview 97

Default EEE Configuration 98

Restrictions for EEE 98

How to Configure EEE 98

Enabling or Disabling EEE 98

Monitoring EEE 99

Configuration Examples for Configuring EEE 100

Additional References 100

Feature History and Information for Configuring EEE 101

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Contents

Preface

•Document Conventions, page ix

•Related Documentation, page xi

•Obtaining Documentation and Submitting a Service Request, page xi

Document Conventions

This document uses the following conventions:

DescriptionConvention

Both the ^symbol and Ctrl represent the Control (Ctrl) key on a keyboard.

For example, the key combination ^D or Ctrl-D means that you hold

down the Control key while you press the D key. (Keys are indicated in

capital letters but are not case sensitive.)

^ or Ctrl

Commands and keywords and user-entered text appear in bold font.bold font

Document titles, new or emphasized terms, and arguments for which you

supply values are in italic font.

Italic font

Terminal sessions and information the system displays appear in courier

font.

Courier font

Bold Courier font indicates text that the user must enter.Bold Courier font

Elements in square brackets are optional.[x]

An ellipsis (three consecutive nonbolded periods without spaces) after

a syntax element indicates that the element can be repeated.

...

A vertical line, called a pipe, indicates a choice within a set of keywords

or arguments.

Catalyst 2960-XR Switch Interface and Hardware Component Configuration Guide, Cisco IOS Release 15.0(2)EX1

OL-29420-01 ix

DescriptionConvention

Optional alternative keywords are grouped in brackets and separated by

vertical bars.

[x | y]

Required alternative keywords are grouped in braces and separated by

vertical bars.

{x | y}

Nested set of square brackets or braces indicate optional or required

choices within optional or required elements. Braces and a vertical bar

within square brackets indicate a required choice within an optional

element.

[x {y | z}]

A nonquoted set of characters. Do not use quotation marks around the

string or the string will include the quotation marks.

string

Nonprinting characters such as passwords are in angle brackets.< >

Default responses to system prompts are in square brackets.[ ]

An exclamation point (!) or a pound sign (#) at the beginning of a line

of code indicates a comment line.

!, #

Reader Alert Conventions

This document uses the following conventions for reader alerts:

Means reader take note. Notes contain helpful suggestions or references to material not covered in the

manual.

Note

Means the following information will help you solve a problem.

Tip

Means reader be careful. In this situation, you might do something that could result in equipment damage

or loss of data.

Caution

Means the described action saves time. You can save time by performing the action described in the

paragraph.

Timesaver

Means reader be warned. In this situation, you might perform an action that could result in bodily

injury.

Warning

Catalyst 2960-XR Switch Interface and Hardware Component Configuration Guide, Cisco IOS Release 15.0(2)EX1

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