Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Manuale utente

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Catalyst Supervisor Engine 32 PISA

Cisco IOS Software Configuration Guide

Release 12.2(18)ZY and Later Releases

Text Part Number: OL-11439-03

HE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL

STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT

WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT

SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE

OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH

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relationship between Cisco and any other company. (1005R)

Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY

iii

Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY

OL-11439-03

CONTENTS

Preface xxix

Audience 1-xxix

Related Documentation 1-xxix

Conventions 1-xxx

1-xxxi

Product Overview 1-1

Supported Hardware and Software 1-1

User Interfaces 1-1

Configuring Embedded CiscoView Support 1-2

Understanding Embedded CiscoView 1-2

Installing and Configuring Embedded CiscoView 1-2

Displaying Embedded CiscoView Information 1-3

Software Features Supported in Hardware by the PFC3B 1-3

Command-Line Interfaces 2-1

Accessing the CLI 2-1

Accessing the CLI through the EIA/TIA-232 Console Interface 2-2

Accessing the CLI through Telnet 2-2

Performing Command Line Processing 2-3

Performing History Substitution 2-3

Cisco IOS Command Modes 2-4

Displaying a List of Cisco IOS Commands and Syntax 2-5

Securing the CLI 2-6

ROM-Monitor Command-Line Interface 2-7

Configuring the Switch for the First Time 3-1

Default Configuration 3-1

Configuring the Switch 3-2

Using the Setup Facility or the setup Command 3-2

Using Configuration Mode 3-10

Checking the Running Configuration Before Saving 3-10

Saving the Running Configuration Settings 3-11

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Reviewing the Configuration 3-11

Configuring a Static Route 3-11

Configuring a BOOTP Server 3-13

Protecting Access to Privileged EXEC Commands 3-14

Setting or Changing a Static Enable Password 3-14

Using the enable password and enable secret Commands 3-15

Setting or Changing a Line Password 3-15

Setting TACACS+ Password Protection for Privileged EXEC Mode 3-16

Encrypting Passwords 3-16

Configuring Multiple Privilege Levels 3-17

Recovering a Lost Enable Password 3-18

Modifying the Supervisor Engine Startup Configuration 3-19

Understanding the Supervisor Engine Boot Configuration 3-19

Configuring the Software Configuration Register 3-20

Specifying the Startup System Image 3-23

Understanding Flash Memory 3-24

CONFIG_FILE Environment Variable 3-25

Controlling Environment Variables 3-25

Configuring a Supervisor Engine 32 PISA 4-1

Flash Memory on a Supervisor Engine 32 PISA 4-2

Supervisor Engine 32 PISA Ports 4-2

Supervisor Engine 32 PISA Management Ports 4-2

Supervisor Engine 32 PISA Data Ports 4-2

Configuring Full PISA EtherChannel Bandwidth 4-3

Displaying PISA Platform Statistics 4-4

Configuring NSF with SSO Supervisor Engine Redundancy 5-1

Understanding NSF with SSO Supervisor Engine Redundancy 5-1

NSF with SSO Supervisor Engine Redundancy Overview 5-2

SSO Operation 5-2

NSF Operation 5-2

Cisco Express Forwarding 5-3

Multicast MLS NSF with SSO 5-3

Routing Protocols 5-4

NSF Benefits and Restrictions 5-7

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Supervisor Engine Configuration Synchronization 5-9

Supervisor Engine Redundancy Guidelines and Restrictions 5-9

Redundancy Configuration Guidelines and Restrictions 5-9

Hardware Configuration Guidelines and Restrictions 5-9

Configuration Mode Restrictions 5-10

NSF Configuration Tasks 5-10

Configuring SSO 5-11

Configuring Multicast MLS NSF with SSO 5-11

Verifying Multicast NSF with SSO 5-12

Configuring CEF NSF 5-12

Verifying CEF NSF 5-12

Configuring BGP NSF 5-13

Verifying BGP NSF 5-13

Configuring OSPF NSF 5-14

Verifying OSPF NSF 5-14

Configuring IS-IS NSF 5-15

Verifying IS-IS NSF 5-16

Configuring EIGRP NSF 5-18

Verifying EIGRP NSF 5-18

Synchronizing the Supervisor Engine Configurations 5-19

Copying Files to the Redundant Supervisor Engine 5-19

Configuring RPR Supervisor Engine Redundancy 6-1

Understanding RPR 6-1

Supervisor Engine Redundancy Overview 6-2

RPR Operation 6-2

Supervisor Engine Configuration Synchronization 6-3

Supervisor Engine Redundancy Guidelines and Restrictions 6-3

Redundancy Guidelines and Restrictions 6-3

Hardware Configuration Guidelines and Restrictions 6-3

Configuration Mode Restrictions 6-4

Configuring Supervisor Engine Redundancy 6-4

Configuring Redundancy 6-4

Synchronizing the Supervisor Engine Configurations 6-5

Displaying the Redundancy States 6-5

Performing a Fast Software Upgrade 6-6

Copying Files to the Redundant Supervisor Engine 6-7

Contents

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Configuring Interfaces 7-1

Understanding Interface Configuration 7-2

Using the Interface Command 7-2

Configuring a Range of Interfaces 7-4

Defining and Using Interface-Range Macros 7-5

Configuring Optional Interface Features 7-6

Configuring Ethernet Interface Speed and Duplex Mode 7-7

Configuring Jumbo Frame Support 7-10

Configuring IEEE 802.3x Flow Control 7-13

Configuring the Port Debounce Timer 7-14

Adding a Description for an Interface 7-15

Understanding Online Insertion and Removal 7-16

Monitoring and Maintaining Interfaces 7-16

Monitoring Interface Status 7-17

Clearing Counters on an Interface 7-17

Resetting an Interface 7-18

Shutting Down and Restarting an Interface 7-18

Checking the Cable Status Using the TDR 7-19

Configuring LAN Ports for Layer 2 Switching 8-1

Understanding How Layer 2 Switching Works 8-1

Understanding Layer 2 Ethernet Switching 8-1

Understanding VLAN Trunks 8-2

Layer 2 LAN Port Modes 8-4

Default Layer 2 LAN Interface Configuration 8-5

Layer 2 LAN Interface Configuration Guidelines and Restrictions 8-5

Configuring LAN Interfaces for Layer 2 Switching 8-6

Configuring a LAN Port for Layer 2 Switching 8-7

Configuring a Layer 2 Switching Port as a Trunk 8-8

Configuring a LAN Interface as a Layer 2 Access Port 8-14

Configuring a Custom IEEE 802.1Q EtherType Field Value 8-15

Configuring Flex Links 9-1

Understanding Flex Links 9-1

Configuring Flex Links 9-2

Flex Links Default Configuration 9-2

Flex Links Configuration Guidelines and Restrictions 9-2

Contents

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Configuring Flex Links 9-3

Monitoring Flex Links 9-3

Configuring EtherChannels 10-1

Understanding How EtherChannels Work 10-1

EtherChannel Feature Overview 10-1

Understanding How EtherChannels Are Configured 10-2

Understanding Port Channel Interfaces 10-4

Understanding Load Balancing 10-4

EtherChannel Feature Configuration Guidelines and Restrictions 10-5

Configuring EtherChannels 10-6

Configuring Port Channel Logical Interfaces for Layer 3 EtherChannels 10-6

Configuring Channel Groups 10-7

Configuring the LACP System Priority and System ID 10-10

Configuring EtherChannel Load Balancing 10-10

Configuring the EtherChannel Min-Links Feature 10-11

Configuring VTP 11-1

Understanding How VTP Works 11-1

Understanding the VTP Domain 11-2

Understanding VTP Modes 11-2

Understanding VTP Advertisements 11-3

Understanding VTP Version 2 11-3

Understanding VTP Pruning 11-3

VTP Default Configuration 11-5

VTP Configuration Guidelines and Restrictions 11-5

Configuring VTP 11-6

Configuring VTP Global Parameters 11-6

Configuring the VTP Mode 11-8

Displaying VTP Statistics 11-10

Configuring VLANs 12-1

Understanding How VLANs Work 12-1

VLAN Overview 12-1

VLAN Ranges 12-2

Configurable VLAN Parameters 12-3

Understanding Token Ring VLANs 12-3

VLAN Default Configuration 12-6

Contents

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VLAN Configuration Guidelines and Restrictions 12-8

Configuring VLANs 12-9

VLAN Configuration Options 12-9

Creating or Modifying an Ethernet VLAN 12-10

Assigning a Layer 2 LAN Interface to a VLAN 12-11

Configuring the Internal VLAN Allocation Policy 12-12

Configuring VLAN Translation 12-12

Mapping 802.1Q VLANs to ISL VLANs 12-15

Saving VLAN Information 12-16

Configuring Private VLANs 13-1

Understanding How Private VLANs Work 13-1

Private VLAN Domains 13-2

Private VLAN Ports 13-3

Primary, Isolated, and Community VLANs 13-3

Private VLAN Port Isolation 13-4

IP Addressing Scheme with Private VLANs 13-4

Private VLANs Across Multiple Switches 13-5

Private VLAN Interaction with Other Features 13-5

Private VLAN Configuration Guidelines and Restrictions 13-6

Secondary and Primary VLAN Configuration 13-7

Private VLAN Port Configuration 13-9

Limitations with Other Features 13-9

Configuring Private VLANs 13-11

Configuring a VLAN as a Private VLAN 13-11

Associating Secondary VLANs with a Primary VLAN 13-12

Mapping Secondary VLANs to the Layer 3 VLAN Interface of a Primary VLAN 13-13

Configuring a Layer 2 Interface as a Private VLAN Host Port 13-14

Configuring a Layer 2 Interface as a Private VLAN Promiscuous Port 13-15

Monitoring Private VLANs 13-17

Configuring Cisco IP Phone Support 14-1

Understanding Cisco IP Phone Support 14-1

Cisco IP Phone Connections 14-1

Cisco IP Phone Voice Traffic 14-2

Cisco IP Phone Data Traffic 14-3

Cisco IP Phone Power Configurations 14-3

Contents

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Default Cisco IP Phone Support Configuration 14-5

Cisco IP Phone Support Configuration Guidelines and Restrictions 14-6

Configuring Cisco IP Phone Support 14-6

Configuring Voice Traffic Support 14-7

Configuring Data Traffic Support 14-8

Configuring Inline Power Support 14-9

Configuring IEEE 802.1Q Tunneling 15-1

Understanding How 802.1Q Tunneling Works 15-1

802.1Q Tunneling Configuration Guidelines and Restrictions 15-3

Configuring 802.1Q Tunneling 15-6

Configuring 802.1Q Tunnel Ports 15-6

Configuring the Switch to Tag Native VLAN Traffic 15-6

Configuring Layer 2 Protocol Tunneling 16-1

Understanding How Layer 2 Protocol Tunneling Works 16-1

Configuring Support for Layer 2 Protocol Tunneling 16-2

Configuring STP and MST 17-1

Understanding How STP Works 17-1

STP Overview 17-2

Understanding the Bridge ID 17-2

Understanding Bridge Protocol Data Units 17-3

Election of the Root Bridge 17-4

STP Protocol Timers 17-4

Creating the Spanning Tree Topology 17-4

STP Port States 17-5

STP and IEEE 802.1Q Trunks 17-11

Understanding How IEEE 802.1w RSTP Works 17-12

Port Roles and the Active Topology 17-12

Rapid Convergence 17-13

Synchronization of Port Roles 17-14

Bridge Protocol Data Unit Format and Processing 17-15

Topology Changes 17-17

Rapid-PVST 17-17

Understanding MST 17-17

MST Overview 17-18

MST Regions 17-18

Contents

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IST, CIST, and CST 17-19

Hop Count 17-22

Boundary Ports 17-22

Standard-Compliant MST Implementation 17-23

Interoperability with IEEE 802.1D-1998 STP 17-25

Configuring STP 17-25

Default STP Configuration 17-26

Enabling STP 17-26

Enabling the Extended System ID 17-28

Configuring the Root Bridge 17-28

Configuring a Secondary Root Bridge 17-29

Configuring STP Port Priority 17-30

Configuring STP Port Cost 17-32

Configuring the Bridge Priority of a VLAN 17-33

Configuring the Hello Time 17-34

Configuring the Forward-Delay Time for a VLAN 17-35

Configuring the Maximum Aging Time for a VLAN 17-35

Enabling Rapid-PVST 17-36

Configuring MST 17-37

Default MST Configuration 17-37

MST Configuration Guidelines and Restrictions 17-38

Specifying the MST Region Configuration and Enabling MST 17-38

Configuring the Root Bridge 17-40

Configuring a Secondary Root Bridge 17-41

Configuring Port Priority 17-42

Configuring Path Cost 17-43

Configuring the Switch Priority 17-44

Configuring the Hello Time 17-45

Configuring the Forwarding-Delay Time 17-46

Configuring the Transmit Hold Count 17-46

Configuring the Maximum-Aging Time 17-47

Configuring the Maximum-Hop Count 17-47

Specifying the Link Type to Ensure Rapid Transitions 17-47

Designating the Neighbor Type 17-48

Restarting the Protocol Migration Process 17-49

Displaying the MST Configuration and Status 17-49

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