Cisco Industrial Ethernet 3010 Series Switches User manual

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Cisco IE 3010 Switch Software

Configuration Guide

Cisco IOS Release 12.2(53)EZ

November 2010

Text Part Number: OL-23145-01

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CONTENTS

Preface xxxiii

Audience xxxiii

Purpose xxxiii

Conventions xxxiii

Related Publications xxxiv

Obtaining Documentation, Obtaining Support, and Security Guidelines xxxv

CHAPTER

1Overview 1-1

Features 1-1

Ease-of-Deployment and Ease-of-Use Features 1-2

Performance Features 1-2

Management Options 1-3

Manageability Features 1-4

Availability and Redundancy Features 1-5

VLAN Features 1-6

Security Features 1-6

QoS and CoS Features 1-9

Monitoring Features 1-10

Default Settings After Initial Switch Configuration 1-11

Network Configuration Examples 1-13

Design Concepts for Using the Switch 1-13

Where to Go Next 1-14

CHAPTER

2Using the Command-Line Interface 2-1

Understanding Command Modes 2-1

Understanding the Help System 2-3

Understanding Abbreviated Commands 2-4

Understanding no and default Forms of Commands 2-4

Understanding CLI Error Messages 2-5

Using Configuration Logging 2-5

Using Command History 2-6

Changing the Command History Buffer Size 2-6

Recalling Commands 2-6

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Disabling the Command History Feature 2-7

Using Editing Features 2-7

Enabling and Disabling Editing Features 2-7

Editing Commands through Keystrokes 2-8

Editing Command Lines that Wrap 2-9

Searching and Filtering Output of show and more Commands 2-10

Accessing the CLI 2-10

Accessing the CLI through a Console Connection or through Telnet 2-10

CHAPTER

3Assigning the Switch IP Address and Default Gateway 3-1

Understanding the Boot Process 3-1

Assigning Switch Information 3-3

Default Switch Information 3-3

Understanding DHCP-Based Autoconfiguration 3-3

DHCP Client Request Process 3-4

Understanding DHCP-based Autoconfiguration and Image Update 3-5

DHCP Autoconfiguration 3-5

DHCP Auto-Image Update 3-5

Limitations and Restrictions 3-6

Configuring DHCP-Based Autoconfiguration 3-6

DHCP Server Configuration Guidelines 3-6

Configuring the TFTP Server 3-7

Configuring the DNS 3-8

Configuring the Relay Device 3-8

Obtaining Configuration Files 3-9

Example Configuration 3-9

Configuring the DHCP Auto Configuration and Image Update Features 3-11

Configuring DHCP Autoconfiguration (Only Configuration File) 3-11

Configuring DHCP Auto-Image Update (Configuration File and Image) 3-12

Configuring the Client 3-13

Manually Assigning IP Information 3-14

Checking and Saving the Running Configuration 3-15

Modifying the Startup Configuration 3-16

Default Boot Configuration 3-17

Automatically Downloading a Configuration File 3-17

Specifying the Filename to Read and Write the System Configuration 3-17

Booting Manually 3-18

Booting a Specific Software Image 3-19

Controlling Environment Variables 3-19

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Scheduling a Reload of the Software Image 3-21

Configuring a Scheduled Reload 3-21

Displaying Scheduled Reload Information 3-22

CHAPTER

4Configuring Cisco IOS Configuration Engine 4-1

Understanding Cisco Configuration Engine Software 4-1

Configuration Service 4-2

Event Service 4-3

NameSpace Mapper 4-3

What You Should Know About the CNS IDs and Device Hostnames 4-3

ConfigID 4-3

DeviceID 4-4

Hostname and DeviceID 4-4

Using Hostname, DeviceID, and ConfigID 4-4

Understanding Cisco IOS Agents 4-5

Initial Configuration 4-5

Incremental (Partial) Configuration 4-6

Synchronized Configuration 4-6

Configuring Cisco IOS Agents 4-6

Enabling Automated CNS Configuration 4-6

Enabling the CNS Event Agent 4-7

Enabling the Cisco IOS CNS Agent 4-9

Enabling an Initial Configuration 4-9

Enabling a Partial Configuration 4-12

Displaying CNS Configuration 4-13

CHAPTER

5Clustering Switches 5-1

Understanding Switch Clusters 5-1

Cluster Command Switch Characteristics 5-3

Standby Cluster Command Switch Characteristics 5-3

Candidate Switch and Cluster Member Switch Characteristics 5-3

Planning a Switch Cluster 5-4

Automatic Discovery of Cluster Candidates and Members 5-4

Discovery Through CDP Hops 5-5

Discovery Through Non-CDP-Capable and Noncluster-Capable Devices 5-6

Discovery Through Different VLANs 5-6

Discovery Through Different Management VLANs 5-7

Discovery of Newly Installed Switches 5-8

Virtual IP Addresses 5-9

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Other Considerations for Cluster Standby Groups 5-9

Automatic Recovery of Cluster Configuration 5-10

IP Addresses 5-11

Hostnames 5-11

Passwords 5-12

SNMP Community Strings 5-12

TACACS+ and RADIUS 5-12

LRE Profiles 5-13

Using the CLI to Manage Switch Clusters 5-13

Using SNMP to Manage Switch Clusters 5-14

CHAPTER

6Administering the Switch 6-1

Managing the System Time and Date 6-1

Understanding the System Clock 6-1

Understanding Network Time Protocol 6-2

Configuring NTP 6-4

Default NTP Configuration 6-4

Configuring NTP Authentication 6-5

Configuring NTP Associations 6-6

Configuring NTP Broadcast Service 6-7

Configuring NTP Access Restrictions 6-8

Configuring the Source IP Address for NTP Packets 6-10

Displaying the NTP Configuration 6-11

Configuring Time and Date Manually 6-11

Setting the System Clock 6-11

Displaying the Time and Date Configuration 6-12

Configuring the Time Zone 6-12

Configuring Summer Time (Daylight Saving Time) 6-13

Configuring a System Name and Prompt 6-14

Default System Name and Prompt Configuration 6-15

Configuring a System Name 6-15

Understanding DNS 6-15

Default DNS Configuration 6-16

Setting Up DNS 6-16

Displaying the DNS Configuration 6-17

Creating a Banner 6-17

Default Banner Configuration 6-17

Configuring a Message-of-the-Day Login Banner 6-18

Configuring a Login Banner 6-19

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Managing the MAC Address Table 6-19

Building the Address Table 6-20

MAC Addresses and VLANs 6-20

Default MAC Address Table Configuration 6-21

Changing the Address Aging Time 6-21

Removing Dynamic Address Entries 6-22

Configuring MAC Address Change Notification Traps 6-22

Configuring MAC Address Move Notification Traps 6-24

Configuring MAC Threshold Notification Traps 6-25

Adding and Removing Static Address Entries 6-26

Configuring Unicast MAC Address Filtering 6-27

Disabling MAC Address Learning on a VLAN 6-28

Displaying Address Table Entries 6-30

Managing the ARP Table 6-30

CHAPTER

7Configuring the Switch Alarms 7-1

Understanding IE 3010 Switch Alarms 7-1

Global Status Monitoring Alarms 7-2

FCS Error Hysteresis Threshold 7-2

Port Status Monitoring Alarms 7-2

Triggering Alarm Options 7-3

Configuring IE 3010 External Alarms 7-4

Configuring IE 3010 Switch Alarms 7-6

Default Switch Alarm Configuration 7-6

Configuring the Power Supply Alarms 7-6

Configuring the Switch Temperature Alarms 7-7

Setting the Primary Temperature Threshold for the Switch 7-7

Setting a Secondary Temperature Threshold for the Switch 7-8

Associating the Temperature Alarms to a Relay 7-9

Configuring the FCS Bit Error Rate Alarm 7-10

Setting the FCS Error Threshold 7-10

Setting the FCS Error Hysteresis Threshold 7-10

Configuring Alarm Profiles 7-11

Creating or Modifying an Alarm Profile 7-11

Attaching an Alarm Profile to a Specific Port 7-12

Enabling SNMP Traps 7-13

Displaying IE 3010 Switch Alarms Status 7-13

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CHAPTER

8Configuring SDM Templates 8-1

Understanding the SDM Templates 8-1

Configuring the Switch SDM Template 8-2

SDM Template Configuration Guidelines 8-2

Setting the SDM Template 8-3

Displaying the SDM Templates 8-4

CHAPTER

9Configuring Switch-Based Authentication 9-1

Preventing Unauthorized Access to Your Switch 9-1

Protecting Access to Privileged EXEC Commands 9-2

Default Password and Privilege Level Configuration 9-3

Setting or Changing a Static Enable Password 9-3

Protecting Enable and Enable Secret Passwords with Encryption 9-4

Disabling Password Recovery 9-5

Setting a Telnet Password for a Terminal Line 9-6

Configuring Username and Password Pairs 9-7

Configuring Multiple Privilege Levels 9-8

Setting the Privilege Level for a Command 9-8

Changing the Default Privilege Level for Lines 9-9

Logging into and Exiting a Privilege Level 9-10

Controlling Switch Access with TACACS+ 9-10

Understanding TACACS+ 9-10

TACACS+ Operation 9-12

Configuring TACACS+ 9-13

Default TACACS+ Configuration 9-13

Identifying the TACACS+ Server Host and Setting the Authentication Key 9-13

Configuring TACACS+ Login Authentication 9-14

Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 9-16

Starting TACACS+ Accounting 9-17

Establishing a Session with a Router if the AAA Server is Unreachable 9-18

Displaying the TACACS+ Configuration 9-18

Controlling Switch Access with RADIUS 9-18

Understanding RADIUS 9-18

RADIUS Operation 9-20

RADIUS Change of Authorization 9-20

Overview 9-21

Change-of-Authorization Requests 9-21

CoA Request Response Code 9-22

CoA Request Commands 9-24

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Configuring RADIUS 9-27

Default RADIUS Configuration 9-27

Identifying the RADIUS Server Host 9-28

Configuring RADIUS Login Authentication 9-30

Defining AAA Server Groups 9-32

Configuring RADIUS Authorization for User Privileged Access and Network Services 9-34

Starting RADIUS Accounting 9-35

Establishing a Session with a Router if the AAA Server is Unreachable 9-36

Configuring Settings for All RADIUS Servers 9-36

Configuring the Switch to Use Vendor-Specific RADIUS Attributes 9-36

Configuring the Switch for Vendor-Proprietary RADIUS Server Communication 9-38

Configuring CoA on the Switch 9-39

Monitoring and Troubleshooting CoA Functionality 9-40

Configuring RADIUS Server Load Balancing 9-40

Displaying the RADIUS Configuration 9-40

Controlling Switch Access with Kerberos 9-40

Understanding Kerberos 9-41

Kerberos Operation 9-43

Authenticating to a Boundary Switch 9-43

Obtaining a TGT from a KDC 9-43

Authenticating to Network Services 9-44

Configuring Kerberos 9-44

Configuring the Switch for Local Authentication and Authorization 9-44

Configuring the Switch for Secure Shell 9-45

Understanding SSH 9-46

SSH Servers, Integrated Clients, and Supported Versions 9-46

Limitations 9-46

Configuring SSH 9-47

Configuration Guidelines 9-47

Setting Up the Switch to Run SSH 9-47

Configuring the SSH Server 9-48

Displaying the SSH Configuration and Status 9-49

Configuring the Switch for Secure Socket Layer HTTP 9-50

Understanding Secure HTTP Servers and Clients 9-51

Certificate Authority Trustpoints 9-51

CipherSuites 9-52

Configuring Secure HTTP Servers and Clients 9-53

Default SSL Configuration 9-53

SSL Configuration Guidelines 9-53

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Configuring a CA Trustpoint 9-54

Configuring the Secure HTTP Server 9-55

Configuring the Secure HTTP Client 9-56

Displaying Secure HTTP Server and Client Status 9-57

Configuring the Switch for Secure Copy Protocol 9-57

Information About Secure Copy 9-58

CHAPTER

10 Configuring IEEE 802.1x Port-Based Authentication 10-1

Understanding IEEE 802.1x Port-Based Authentication 10-1

Device Roles 10-2

Authentication Process 10-3

Authentication Initiation and Message Exchange 10-5

Authentication Manager 10-7

Port-Based Authentication Methods 10-7

Per-User ACLs and Filter-Ids 10-8

Authentication Manager CLI Commands 10-9

Ports in Authorized and Unauthorized States 10-10

802.1x Host Mode 10-11

Multidomain Authentication 10-12

802.1x Multiple Authentication Mode 10-13

MAC Move 10-13

MAC Replace 10-14

802.1x Accounting 10-14

802.1x Accounting Attribute-Value Pairs 10-15

802.1x Readiness Check 10-16

802.1x Authentication with VLAN Assignment 10-16

Using 802.1x Authentication with Per-User ACLs 10-17

802.1x Authentication with Downloadable ACLs and Redirect URLs 10-18

Cisco Secure ACS and Attribute-Value Pairs for the Redirect URL 10-20

Cisco Secure ACS and Attribute-Value Pairs for Downloadable ACLs 10-20

VLAN ID-based MAC Authentication 10-20

802.1x Authentication with Guest VLAN 10-21

802.1x Authentication with Restricted VLAN 10-22

802.1x Authentication with Inaccessible Authentication Bypass 10-23

Support on Multiple-Authentication Ports 10-23

Authentication Results 10-23

Feature Interactions 10-24

802.1x Authentication with Voice VLAN Ports 10-24

802.1x Authentication with Port Security 10-25

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802.1x Authentication with Wake-on-LAN 10-26

802.1x Authentication with MAC Authentication Bypass 10-26

802.1x User Distribution 10-28

802.1x User Distribution Configuration Guidelines 10-28

Network Admission Control Layer 2 802.1x Validation 10-29

Flexible Authentication Ordering 10-29

Open1x Authentication 10-29

Using Voice Aware 802.1x Security 10-30

802.1x Supplicant and Authenticator Switches with Network Edge Access Topology (NEAT) 10-30

Guidelines 10-31

Using IEEE 802.1x Authentication with ACLs and the RADIUS Filter-Id Attribute 10-31

Common Session ID 10-32

Configuring 802.1x Authentication 10-33

Default 802.1x Authentication Configuration 10-34

802.1x Authentication Configuration Guidelines 10-35

802.1x Authentication 10-35

VLAN Assignment, Guest VLAN, Restricted VLAN, and Inaccessible Authentication

Bypass 10-36

MAC Authentication Bypass 10-37

Maximum Number of Allowed Devices Per Port 10-37

Configuring 802.1x Readiness Check 10-37

Configuring Voice Aware 802.1x Security 10-38

Configuring 802.1x Violation Modes 10-39

Configuring 802.1x Authentication 10-40

Configuring the Switch-to-RADIUS-Server Communication 10-42

Configuring the Host Mode 10-43

Configuring Periodic Re-Authentication 10-44

Manually Re-Authenticating a Client Connected to a Port 10-45

Changing the Quiet Period 10-46

Changing the Switch-to-Client Retransmission Time 10-46

Setting the Switch-to-Client Frame-Retransmission Number 10-47

Setting the Re-Authentication Number 10-48

Enabling MAC Move 10-48

Enabling MAC Replace 10-49

Configuring 802.1x Accounting 10-50

Configuring a Guest VLAN 10-51

Configuring a Restricted VLAN 10-52

Configuring the Inaccessible Authentication Bypass Feature 10-54

Configuring 802.1x Authentication with WoL 10-56

Configuring MAC Authentication Bypass 10-57

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Configuring 802.1x User Distribution 10-58

Configuring NAC Layer 2 802.1x Validation 10-59

Configuring an Authenticator and a Supplicant Switch with NEAT 10-60

Configuring NEAT with Auto Smartports Macros 10-61

Configuring 802.1x Authentication with Downloadable ACLs and Redirect URLs 10-61

Configuring Downloadable ACLs 10-62

Configuring a Downloadable Policy 10-62

Configuring VLAN ID-based MAC Authentication 10-64

Configuring Flexible Authentication Ordering 10-64

Configuring Open1x 10-65

Disabling 802.1x Authentication on the Port 10-65

Resetting the 802.1x Authentication Configuration to the Default Values 10-66

Displaying 802.1x Statistics and Status 10-67

CHAPTER

11 Configuring Web-Based Authentication 11-1

Understanding Web-Based Authentication 11-1

Device Roles 11-2

Host Detection 11-2

Session Creation 11-2

Authentication Process 11-3

Local Web Authentication Banner 11-3

Web Authentication Customizable Web Pages 11-5

Guidelines 11-5

Web-based Authentication Interactions with Other Features 11-7

Port Security 11-7

LAN Port IP 11-7

Gateway IP 11-7

ACLs 11-7

Context-Based Access Control 11-8

802.1x Authentication 11-8

EtherChannel 11-8

Configuring Web-Based Authentication 11-9

Default Web-Based Authentication Configuration 11-9

Web-Based Authentication Configuration Guidelines and Restrictions 11-9

Web-Based Authentication Configuration Task List 11-10

Configuring the Authentication Rule and Interfaces 11-10

Configuring AAA Authentication 11-11

Configuring Switch-to-RADIUS-Server Communication 11-11

Configuring the HTTP Server 11-13

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Customizing the Authentication Proxy Web Pages 11-13

Specifying a Redirection URL for Successful Login 11-15

Configuring an AAA Fail Policy 11-15

Configuring the Web-Based Authentication Parameters 11-16

Configuring a Web Authentication Local Banner 11-16

Removing Web-Based Authentication Cache Entries 11-17

Displaying Web-Based Authentication Status 11-17

CHAPTER

12 Configuring Interface Characteristics 12-1

Understanding Interface Types 12-1

Port-Based VLANs 12-2

Switch Ports 12-2

Access Ports 12-2

Trunk Ports 12-3

EtherChannel Port Groups 12-3

Dual-Purpose Uplink Ports 12-4

Power over Ethernet Ports 12-4

Supported Protocols and Standards 12-4

Powered-Device Detection and Initial Power Allocation 12-5

Power Management Modes 12-6

Power Monitoring and Power Policing 12-7

Connecting Interfaces 12-9

Using Interface Configuration Mode 12-9

Procedures for Configuring Interfaces 12-10

Configuring a Range of Interfaces 12-10

Configuring and Using Interface Range Macros 12-12

Configuring Ethernet Interfaces 12-14

Default Ethernet Interface Configuration 12-14

Setting the Type of a Dual-Purpose Uplink Port 12-15

Configuring Interface Speed and Duplex Mode 12-16

Speed and Duplex Configuration Guidelines 12-17

Setting the Interface Speed and Duplex Parameters 12-17

Configuring IEEE 802.3x Flow Control 12-18

Configuring Auto-MDIX on an Interface 12-19

Configuring a Power Management Mode on a PoE Port 12-20

Budgeting Power for Devices Connected to a PoE Port 12-22

Adding a Description for an Interface 12-23

Configuring Layer 3 Interfaces 12-24

Configuring the System MTU 12-24

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Monitoring and Maintaining the Interfaces 12-26

Monitoring Interface Status 12-26

Clearing and Resetting Interfaces and Counters 12-27

Shutting Down and Restarting the Interface 12-27

CHAPTER

13 Configuring Smartports Macros 13-1

Understanding Smartports Macros 13-1

Configuring Smartports Macros 13-1

Default Smartports Configuration 13-1

Smartports Configuration Guidelines 13-2

Applying Smartports Macros 13-3

Displaying Smartports Macros 13-5

CHAPTER

14 Configuring VLANs 14-1

Understanding VLANs 14-1

Supported VLANs 14-2

VLAN Port Membership Modes 14-3

Configuring Normal-Range VLANs 14-4

Token Ring VLANs 14-5

Normal-Range VLAN Configuration Guidelines 14-5

Configuring Normal-Range VLANs 14-6

Default Ethernet VLAN Configuration 14-6

Creating or Modifying an Ethernet VLAN 14-7

Deleting a VLAN 14-8

Assigning Static-Access Ports to a VLAN 14-9

Configuring Extended-Range VLANs 14-10

Default VLAN Configuration 14-10

Extended-Range VLAN Configuration Guidelines 14-10

Creating an Extended-Range VLAN 14-11

Creating an Extended-Range VLAN with an Internal VLAN ID 14-12

Displaying VLANs 14-13

Configuring VLAN Trunks 14-14

Trunking Overview 14-14

IEEE 802.1Q Configuration Considerations 14-15

Default Layer 2 Ethernet Interface VLAN Configuration 14-16

Configuring an Ethernet Interface as a Trunk Port 14-16

Interaction with Other Features 14-16

Configuring a Trunk Port 14-17

Defining the Allowed VLANs on a Trunk 14-18

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Changing the Pruning-Eligible List 14-19

Configuring the Native VLAN for Untagged Traffic 14-19

Configuring Trunk Ports for Load Sharing 14-20

Load Sharing Using STP Port Priorities 14-20

Load Sharing Using STP Path Cost 14-22

Configuring VMPS 14-23

Understanding VMPS 14-24

Dynamic-Access Port VLAN Membership 14-24

Default VMPS Client Configuration 14-25

VMPS Configuration Guidelines 14-25

Configuring the VMPS Client 14-26

Entering the IP Address of the VMPS 14-26

Configuring Dynamic-Access Ports on VMPS Clients 14-26

Reconfirming VLAN Memberships 14-27

Changing the Reconfirmation Interval 14-27

Changing the Retry Count 14-28

Monitoring the VMPS 14-28

Troubleshooting Dynamic-Access Port VLAN Membership 14-29

VMPS Configuration Example 14-29

CHAPTER

15 Configuring VTP 15-1

Understanding VTP 15-1

The VTP Domain 15-2

VTP Modes 15-3

VTP Advertisements 15-3

VTP Version 2 15-4

VTP Version 3 15-4

VTP Pruning 15-5

Configuring VTP 15-7

Default VTP Configuration 15-7

VTP Configuration Guidelines 15-8

Domain Names 15-8

Passwords 15-8

VTP Version 15-9

Configuration Requirements 15-10

Configuring VTP Mode 15-10

Configuring a VTP Version 3 Password 15-12

Configuring a VTP Version 3 Primary Server 15-13

Enabling the VTP Version 15-13

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Enabling VTP Pruning 15-14

Configuring VTP on a Per-Port Basis 15-15

Adding a VTP Client Switch to a VTP Domain 15-15

Monitoring VTP 15-16

CHAPTER

16 Configuring Voice VLAN 16-1

Understanding Voice VLAN 16-1

Cisco IP Phone Voice Traffic 16-2

Cisco IP Phone Data Traffic 16-2

Configuring Voice VLAN 16-3

Default Voice VLAN Configuration 16-3

Voice VLAN Configuration Guidelines 16-3

Configuring a Port Connected to a Cisco 7960 IP Phone 16-4

Configuring Cisco IP Phone Voice Traffic 16-5

Configuring the Priority of Incoming Data Frames 16-6

Displaying Voice VLAN 16-6

CHAPTER

17 Configuring STP 17-1

Understanding Spanning-Tree Features 17-1

STP Overview 17-2

Spanning-Tree Topology and BPDUs 17-3

Bridge ID, Switch Priority, and Extended System ID 17-4

Spanning-Tree Interface States 17-4

Blocking State 17-5

Listening State 17-6

Learning State 17-6

Forwarding State 17-6

Disabled State 17-7

How a Switch or Port Becomes the Root Switch or Root Port 17-7

Spanning Tree and Redundant Connectivity 17-8

Spanning-Tree Address Management 17-8

Accelerated Aging to Retain Connectivity 17-8

Spanning-Tree Modes and Protocols 17-9

Supported Spanning-Tree Instances 17-9

Spanning-Tree Interoperability and Backward Compatibility 17-10

STP and IEEE 802.1Q Trunks 17-10

VLAN-Bridge Spanning Tree 17-10

Configuring Spanning-Tree Features 17-11

Default Spanning-Tree Configuration 17-11

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Spanning-Tree Configuration Guidelines 17-12

Changing the Spanning-Tree Mode. 17-13

Disabling Spanning Tree 17-14

Configuring the Root Switch 17-14

Configuring a Secondary Root Switch 17-16

Configuring Port Priority 17-16

Configuring Path Cost 17-18

Configuring the Switch Priority of a VLAN 17-19

Configuring Spanning-Tree Timers 17-20

Configuring the Hello Time 17-20

Configuring the Forwarding-Delay Time for a VLAN 17-21

Configuring the Maximum-Aging Time for a VLAN 17-21

Configuring the Transmit Hold-Count 17-22

Displaying the Spanning-Tree Status 17-22

CHAPTER

18 Configuring MSTP 18-1

Understanding MSTP 18-2

Multiple Spanning-Tree Regions 18-2

IST, CIST, and CST 18-2

Operations Within an MST Region 18-3

Operations Between MST Regions 18-3

IEEE 802.1s Terminology 18-5

Hop Count 18-5

Boundary Ports 18-6

IEEE 802.1s Implementation 18-6

Port Role Naming Change 18-6

Interoperation Between Legacy and Standard Switches 18-7

Detecting Unidirectional Link Failure 18-7

Interoperability with IEEE 802.1D STP 18-8

Understanding RSTP 18-8

Port Roles and the Active Topology 18-9

Rapid Convergence 18-9

Synchronization of Port Roles 18-11

Bridge Protocol Data Unit Format and Processing 18-12

Processing Superior BPDU Information 18-12

Processing Inferior BPDU Information 18-13

Topology Changes 18-13

Configuring MSTP Features 18-13

Default MSTP Configuration 18-14

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MSTP Configuration Guidelines 18-14

Specifying the MST Region Configuration and Enabling MSTP 18-15

Configuring the Root Switch 18-17

Configuring a Secondary Root Switch 18-18

Configuring Port Priority 18-19

Configuring Path Cost 18-20

Configuring the Switch Priority 18-21

Configuring the Hello Time 18-22

Configuring the Forwarding-Delay Time 18-23

Configuring the Maximum-Aging Time 18-23

Configuring the Maximum-Hop Count 18-24

Specifying the Link Type to Ensure Rapid Transitions 18-24

Designating the Neighbor Type 18-25

Restarting the Protocol Migration Process 18-25

Displaying the MST Configuration and Status 18-26

CHAPTER

19 Configuring Optional Spanning-Tree Features 19-1

Understanding Optional Spanning-Tree Features 19-1

Understanding Port Fast 19-2

Understanding BPDU Guard 19-2

Understanding BPDU Filtering 19-3

Understanding UplinkFast 19-3

Understanding BackboneFast 19-5

Understanding EtherChannel Guard 19-7

Understanding Root Guard 19-8

Understanding Loop Guard 19-9

Configuring Optional Spanning-Tree Features 19-9

Default Optional Spanning-Tree Configuration 19-9

Optional Spanning-Tree Configuration Guidelines 19-10

Enabling Port Fast 19-10

Enabling BPDU Guard 19-11

Enabling BPDU Filtering 19-12

Enabling UplinkFast for Use with Redundant Links 19-13

Enabling BackboneFast 19-13

Enabling EtherChannel Guard 19-14

Enabling Root Guard 19-15

Enabling Loop Guard 19-15

Displaying the Spanning-Tree Status 19-16

Contents

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Cisco IE 3010 Switch Software Configuration Guide

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CHAPTER

20 Configuring Flex Links and the MAC Address-Table Move Update Feature 20-1

Understanding Flex Links and the MAC Address-Table Move Update 20-1

Flex Links 20-1

VLAN Flex Link Load Balancing and Support 20-2

Flex Link Multicast Fast Convergence 20-3

Learning the Other Flex Link Port as the mrouter Port 20-3

Generating IGMP Reports 20-3

Leaking IGMP Reports 20-4

Configuration Examples 20-4

MAC Address-Table Move Update 20-6

Configuring Flex Links and the MAC Address-Table Move Update 20-7

Default Configuration 20-7

Configuration Guidelines 20-8

Configuring Flex Links 20-8

Configuring VLAN Load Balancing on Flex Links 20-10

Configuring the MAC Address-Table Move Update Feature 20-12

Monitoring Flex Links and the MAC Address-Table Move Update 20-14

CHAPTER

21 Configuring DHCP Features and IP Source Guard Features 21-1

Understanding DHCP Snooping 21-1

DHCP Server 21-2

DHCP Relay Agent 21-2

DHCP Snooping 21-2

Option-82 Data Insertion 21-4

Cisco IOS DHCP Server Database 21-7

DHCP Snooping Binding Database 21-7

Configuring DHCP Snooping 21-8

Default DHCP Snooping Configuration 21-9

DHCP Snooping Configuration Guidelines 21-9

Configuring the DHCP Relay Agent 21-11

Specifying the Packet Forwarding Address 21-11

Enabling DHCP Snooping and Option 82 21-12

Enabling the Cisco IOS DHCP Server Database 21-14

Enabling the DHCP Snooping Binding Database Agent 21-14

Displaying DHCP Snooping Information 21-15

Understanding IP Source Guard 21-15

Source IP Address Filtering 21-16

Source IP and MAC Address Filtering 21-16

IP Source Guard for Static Hosts 21-16

Contents

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Cisco IE 3010 Switch Software Configuration Guide

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Configuring IP Source Guard 21-17

Default IP Source Guard Configuration 21-17

IP Source Guard Configuration Guidelines 21-17

Enabling IP Source Guard 21-18

Configuring IP Source Guard for Static Hosts 21-19

Configuring IP Source Guard for Static Hosts on a Layer 2 Access Port 21-19

Configuring IP Source Guard for Static Hosts on a Private VLAN Host Port 21-24

Displaying IP Source Guard Information 21-26

Understanding DHCP Server Port-Based Address Allocation 21-26

Configuring DHCP Server Port-Based Address Allocation 21-26

Default Port-Based Address Allocation Configuration 21-27

Port-Based Address Allocation Configuration Guidelines 21-27

Enabling DHCP Server Port-Based Address Allocation 21-27

Displaying DHCP Server Port-Based Address Allocation 21-29

CHAPTER

22 Configuring Dynamic ARP Inspection 22-1

Understanding Dynamic ARP Inspection 22-1

Interface Trust States and Network Security 22-3

Rate Limiting of ARP Packets 22-4

Relative Priority of ARP ACLs and DHCP Snooping Entries 22-4

Logging of Dropped Packets 22-4

Configuring Dynamic ARP Inspection 22-5

Default Dynamic ARP Inspection Configuration 22-5

Dynamic ARP Inspection Configuration Guidelines 22-5

Configuring Dynamic ARP Inspection in DHCP Environments 22-7

Configuring ARP ACLs for Non-DHCP Environments 22-8

Limiting the Rate of Incoming ARP Packets 22-10

Performing Validation Checks 22-11

Configuring the Log Buffer 22-12

Displaying Dynamic ARP Inspection Information 22-14

CHAPTER

23 Configuring IGMP Snooping and MVR 23-1

Understanding IGMP Snooping 23-1

IGMP Versions 23-2

Joining a Multicast Group 23-3

Leaving a Multicast Group 23-5

Immediate Leave 23-5

IGMP Configurable-Leave Timer 23-5

IGMP Report Suppression 23-5

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Cisco Industrial Ethernet 3010 Series Switches User manual

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