Cisco Catalyst 3750-X Series Software Configuration Manual

Category
Software
Type
Software Configuration Manual

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Catalyst 3750-X and 3560-X Switch
Software Configuration Guide
Cisco IOS Release 12.2(53)SE2
May 2010
Text Part Number: OL-21521-01
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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
© 2010 Cisco Systems, Inc. All rights reserved.
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CONTENTS
Preface xlix
Audience xlix
Purpose xlix
Conventions xlix
Related Publications l
Obtaining Documentation and Submitting a Service Request li
CHAPTER
1 Overview 1-1
Features 1-1
Deployment Features 1-2
Performance Features 1-4
Management Options 1-5
Manageability Features 1-6
Availability and Redundancy Features 1-8
VLAN Features 1-9
Security Features 1-9
QoS and CoS Features 1-12
Layer 3 Features 1-14
Power over Ethernet Features 1-15
Monitoring Features 1-15
Default Settings After Initial Switch Configuration 1-16
Network Configuration Examples 1-19
Design Concepts for Using the Switch 1-19
Small to Medium-Sized Network Using Catalyst 3750-X and 3560-X Switches 1-26
Large Network Using Catalyst 3750-X and 3560-X Switches 1-28
Multidwelling Network Using Catalyst 3750-X Switches 1-31
Long-Distance, High-Bandwidth Transport Configuration 1-32
Where to Go Next 1-33
CHAPTER
2 Using the Command-Line Interface 2-1
Understanding Command Modes 2-1
Understanding the Help System 2-3
Understanding Abbreviated Commands 2-3
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Understanding no and default Forms of Commands 2-4
Understanding CLI Error Messages 2-4
Using Configuration Logging 2-4
Using Command History 2-5
Changing the Command History Buffer Size 2-5
Recalling Commands 2-6
Disabling the Command History Feature 2-6
Using Editing Features 2-6
Enabling and Disabling Editing Features 2-6
Editing Commands through Keystrokes 2-7
Editing Command Lines that Wrap 2-8
Searching and Filtering Output of show and more Commands 2-9
Accessing the CLI 2-9
Accessing the CLI through a Console Connection or through Telnet 2-10
CHAPTER
3 Assigning the Switch IP Address and Default Gateway 3-1
Understanding the Boot Process 3-1
Assigning Switch Information 3-2
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 3-7
Configuring the TFTP Server 3-7
Configuring the DNS 3-8
Configuring the Relay Device 3-8
Obtaining Configuration Files 3-9
Example Configuration 3-10
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 3-14
Manually Assigning IP Information 3-15
Checking and Saving the Running Configuration 3-15
Contents
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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 3-20
Scheduling a Reload of the Software Image 3-22
Configuring a Scheduled Reload 3-22
Displaying Scheduled Reload Information 3-23
CHAPTER
4 Configuring 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 4-8
Enabling the Cisco IOS CNS Agent 4-9
Enabling an Initial Configuration 4-9
Enabling a Partial Configuration 4-13
Displaying CNS Configuration 4-14
CHAPTER
5 Managing Switch Stacks 5-1
Understanding Switch Stacks 5-2
Switch Stack Membership 5-4
Stack Master Election and Re-Election 5-5
Switch Stack Bridge ID and Router MAC Address 5-7
Stack Member Numbers 5-7
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Stack Member Priority Values 5-8
Switch Stack Offline Configuration 5-8
Effects of Adding a Provisioned Switch to a Switch Stack 5-9
Effects of Replacing a Provisioned Switch in a Switch Stack 5-10
Effects of Removing a Provisioned Switch from a Switch Stack 5-10
Hardware Compatibility and SDM Mismatch Mode in Switch Stacks 5-10
Switch Stack Software Compatibility Recommendations 5-11
Stack Protocol Version Compatibility 5-11
Major Version Number Incompatibility Among Switches 5-11
Minor Version Number Incompatibility Among Switches 5-12
Understanding Auto-Upgrade and Auto-Advise 5-12
Auto-Upgrade and Auto-Advise Example Messages 5-13
Incompatible Software and Stack Member Image Upgrades 5-15
Switch Stack Configuration Files 5-15
Additional Considerations for System-Wide Configuration on Switch Stacks 5-16
Switch Stack Management Connectivity 5-17
Connectivity to the Switch Stack Through an IP Address 5-17
Connectivity to the Switch Stack Through an SSH Session 5-17
Connectivity to the Switch Stack Through Console Ports or Ethernet Management Ports 5-17
Connectivity to Specific Stack Members 5-18
Switch Stack Configuration Scenarios 5-18
Configuring the Switch Stack 5-20
Default Switch Stack Configuration 5-20
Enabling Persistent MAC Address 5-20
Assigning Stack Member Information 5-22
Assigning a Stack Member Number 5-22
Setting the Stack Member Priority Value 5-23
Provisioning a New Member for a Switch Stack 5-23
Accessing the CLI of a Specific Stack Member 5-25
Displaying Switch Stack Information 5-25
Troubleshooting Stacks 5-25
Manually Disabling a Stack Port 5-26
Re-Enabling a Stack Port While Another Member Starts 5-26
Understanding the show switch stack-ports summary Output 5-27
Identifying Loopback Problems 5-28
Software Loopback 5-28
Software Loopback Example: No Connected Stack Cable 5-29
Software Loopback Examples: Connected Stack Cables 5-29
Hardware Loopback 5-30
Contents
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Hardware Loopback Example: LINK OK event 5-30
Hardware Loop Example: LINK NOT OK Event 5-31
Finding a Disconnected Stack Cable 5-32
Fixing a Bad Connection Between Stack Ports 5-33
CHAPTER
6 Clustering Switches 6-1
Understanding Switch Clusters 6-2
Cluster Command Switch Characteristics 6-3
Standby Cluster Command Switch Characteristics 6-3
Candidate Switch and Cluster Member Switch Characteristics 6-4
Planning a Switch Cluster 6-4
Automatic Discovery of Cluster Candidates and Members 6-5
Discovery Through CDP Hops 6-5
Discovery Through Non-CDP-Capable and Noncluster-Capable Devices 6-6
Discovery Through Different VLANs 6-7
Discovery Through Different Management VLANs 6-7
Discovery Through Routed Ports 6-8
Discovery of Newly Installed Switches 6-9
HSRP and Standby Cluster Command Switches 6-10
Virtual IP Addresses 6-11
Other Considerations for Cluster Standby Groups 6-11
Automatic Recovery of Cluster Configuration 6-12
IP Addresses 6-13
Hostnames 6-13
Passwords 6-14
SNMP Community Strings 6-14
Switch Clusters and Switch Stacks 6-14
TACACS+ and RADIUS 6-16
LRE Profiles 6-16
Using the CLI to Manage Switch Clusters 6-16
Catalyst 1900 and Catalyst 2820 CLI Considerations 6-17
Using SNMP to Manage Switch Clusters 6-17
CHAPTER
7 Administering the Switch 7-1
Managing the System Time and Date 7-1
Understanding the System Clock 7-2
Understanding Network Time Protocol 7-2
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Configuring NTP 7-4
Default NTP Configuration 7-4
Configuring NTP Authentication 7-4
Configuring NTP Associations 7-5
Configuring NTP Broadcast Service 7-6
Configuring NTP Access Restrictions 7-8
Configuring the Source IP Address for NTP Packets 7-10
Displaying the NTP Configuration 7-11
Configuring Time and Date Manually 7-11
Setting the System Clock 7-11
Displaying the Time and Date Configuration 7-12
Configuring the Time Zone 7-12
Configuring Summer Time (Daylight Saving Time) 7-13
Configuring a System Name and Prompt 7-14
Default System Name and Prompt Configuration 7-15
Configuring a System Name 7-15
Understanding DNS 7-15
Default DNS Configuration 7-16
Setting Up DNS 7-16
Displaying the DNS Configuration 7-17
Creating a Banner 7-17
Default Banner Configuration 7-17
Configuring a Message-of-the-Day Login Banner 7-18
Configuring a Login Banner 7-19
Managing the MAC Address Table 7-19
Building the Address Table 7-20
MAC Addresses and VLANs 7-20
MAC Addresses and Switch Stacks 7-21
Default MAC Address Table Configuration 7-21
Changing the Address Aging Time 7-21
Removing Dynamic Address Entries 7-22
Configuring MAC Address Change Notification Traps 7-22
Configuring MAC Address Move Notification Traps 7-24
Configuring MAC Threshold Notification Traps 7-25
Adding and Removing Static Address Entries 7-27
Configuring Unicast MAC Address Filtering 7-28
Disabling MAC Address Learning on a VLAN 7-29
Displaying Address Table Entries 7-30
Managing the ARP Table 7-31
Contents
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CHAPTER
8 Configuring SDM Templates 8-1
Understanding the SDM Templates 8-1
Dual IPv4 and IPv6 SDM Templates 8-2
SDM Templates and Switch Stacks 8-3
Configuring the Switch SDM Template 8-4
Default SDM Template 8-4
SDM Template Configuration Guidelines 8-4
Setting the SDM Template 8-5
Displaying the SDM Templates 8-6
CHAPTER
9 Configuring Catalyst 3750-X StackPower 9-1
Understanding StackPower 9-1
StackPower Modes 9-2
Power Priority 9-3
Load Shedding 9-3
Immediate Load Shedding Example 9-4
Configuring Stack Power 9-6
Configuring Power Stack Parameters 9-6
Configuring Power Stack Switch Power Parameters 9-7
Configuring PoE Port Priority 9-8
CHAPTER
10 Configuring Switch-Based Authentication 10-1
Preventing Unauthorized Access to Your Switch 10-1
Protecting Access to Privileged EXEC Commands 10-2
Default Password and Privilege Level Configuration 10-2
Setting or Changing a Static Enable Password 10-3
Protecting Enable and Enable Secret Passwords with Encryption 10-3
Disabling Password Recovery 10-5
Setting a Telnet Password for a Terminal Line 10-6
Configuring Username and Password Pairs 10-6
Configuring Multiple Privilege Levels 10-7
Setting the Privilege Level for a Command 10-8
Changing the Default Privilege Level for Lines 10-9
Logging into and Exiting a Privilege Level 10-9
Controlling Switch Access with TACACS+ 10-10
Understanding TACACS+ 10-10
TACACS+ Operation 10-12
Configuring TACACS+ 10-12
Contents
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Default TACACS+ Configuration 10-13
Identifying the TACACS+ Server Host and Setting the Authentication Key 10-13
Configuring TACACS+ Login Authentication 10-14
Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 10-16
Starting TACACS+ Accounting 10-17
Displaying the TACACS+ Configuration 10-17
Controlling Switch Access with RADIUS 10-17
Understanding RADIUS 10-18
RADIUS Operation 10-19
RADIUS Change of Authorization 10-19
Change-of-Authorization Requests 10-20
CoA Request Response Code 10-21
CoA Request Commands 10-22
Stacking Guidelines for Session Termination 10-25
Configuring RADIUS 10-26
Default RADIUS Configuration 10-27
Identifying the RADIUS Server Host 10-27
Configuring RADIUS Login Authentication 10-29
Defining AAA Server Groups 10-31
Configuring RADIUS Authorization for User Privileged Access and Network Services 10-33
Starting RADIUS Accounting 10-34
Configuring Settings for All RADIUS Servers 10-35
Configuring the Switch to Use Vendor-Specific RADIUS Attributes 10-35
Configuring the Switch for Vendor-Proprietary RADIUS Server Communication 10-36
Configuring CoA on the Switch 10-37
Monitoring and Troubleshooting CoA Functionality 10-38
Configuring RADIUS Server Load Balancing 10-39
Displaying the RADIUS Configuration 10-39
Controlling Switch Access with Kerberos 10-39
Understanding Kerberos 10-39
Kerberos Operation 10-41
Authenticating to a Boundary Switch 10-42
Obtaining a TGT from a KDC 10-42
Authenticating to Network Services 10-42
Configuring Kerberos 10-42
Configuring the Switch for Local Authentication and Authorization 10-43
Configuring the Switch for Secure Shell 10-44
Understanding SSH 10-45
SSH Servers, Integrated Clients, and Supported Versions 10-45
Limitations 10-46
Contents
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Configuring SSH 10-46
Configuration Guidelines 10-46
Setting Up the Switch to Run SSH 10-46
Configuring the SSH Server 10-47
Displaying the SSH Configuration and Status 10-48
Configuring the Switch for Secure Socket Layer HTTP 10-49
Understanding Secure HTTP Servers and Clients 10-49
Certificate Authority Trustpoints 10-49
CipherSuites 10-51
Configuring Secure HTTP Servers and Clients 10-51
Default SSL Configuration 10-51
SSL Configuration Guidelines 10-52
Configuring a CA Trustpoint 10-52
Configuring the Secure HTTP Server 10-53
Configuring the Secure HTTP Client 10-54
Displaying Secure HTTP Server and Client Status 10-55
Configuring the Switch for Secure Copy Protocol 10-55
Information About Secure Copy 10-56
CHAPTER
11 Configuring IEEE 802.1x Port-Based Authentication 11-1
Understanding IEEE 802.1x Port-Based Authentication 11-1
Device Roles 11-3
Authentication Process 11-4
Authentication Initiation and Message Exchange 11-6
Authentication Manager 11-8
Port-Based Authentication Methods 11-8
Per-User ACLs and Filter-Ids 11-9
Authentication Manager CLI Commands 11-9
Ports in Authorized and Unauthorized States 11-10
802.1x Authentication and Switch Stacks 11-11
802.1x Host Mode 11-12
802.1x Multiple Authentication Mode 11-12
MAC Move 11-13
802.1x Accounting 11-13
802.1x Accounting Attribute-Value Pairs 11-13
802.1x Readiness Check 11-14
802.1x Authentication with VLAN Assignment 11-15
802.1x Authentication with Per-User ACLs 11-16
Contents
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802.1x Authentication with Downloadable ACLs and Redirect URLs 11-17
Cisco Secure ACS and Attribute-Value Pairs for the Redirect URL 11-17
Cisco Secure ACS and Attribute-Value Pairs for Downloadable ACLs 11-18
VLAN ID-based MAC Authentication 11-18
802.1x Authentication with Guest VLAN 11-19
802.1x Authentication with Restricted VLAN 11-20
802.1x Authentication with Inaccessible Authentication Bypass 11-20
Support on Multiple-Authentication Ports 11-21
Authentication Results 11-21
Feature Interactions 11-21
802.1x User Distribution 11-22
802.1x User Distribution Configuration Guidelines 11-23
IEEE 802.1x Authentication with Voice VLAN Ports 11-23
IEEE 802.1x Authentication with Port Security 11-24
IEEE 802.1x Authentication with Wake-on-LAN 11-24
IEEE 802.1x Authentication with MAC Authentication Bypass 11-25
Network Admission Control Layer 2 IEEE 802.1x Validation 11-26
Flexible Authentication Ordering 11-27
Open1x Authentication 11-27
Multidomain Authentication 11-27
802.1x Supplicant and Authenticator Switches with Network Edge Access Topology (NEAT) 11-29
Guidelines 11-29
Voice Aware 802.1x Security 11-30
Common Session ID 11-30
Understanding Media Access Control Security and MACsec Key Agreement 11-31
MKA Policies 11-32
Virtual Ports 11-32
MACsec and Stacking 11-32
MACsec, MKA and 802.1x Host Modes 11-33
MKA Statistics 11-34
Configuring 802.1x Authentication 11-34
Default 802.1x Authentication Configuration 11-35
802.1x Authentication Configuration Guidelines 11-36
802.1x Authentication 11-36
VLAN Assignment, Guest VLAN, Restricted VLAN, and Inaccessible Authentication
Bypass
11-37
MAC Authentication Bypass 11-38
Maximum Number of Allowed Devices Per Port 11-38
Configuring 802.1x Readiness Check 11-38
Configuring Voice Aware 802.1x Security 11-39
Contents
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Configuring 802.1x Violation Modes 11-41
Configuring 802.1x Authentication 11-41
Configuring the Switch-to-RADIUS-Server Communication 11-43
Configuring the Host Mode 11-44
Configuring Periodic Re-Authentication 11-45
Manually Re-Authenticating a Client Connected to a Port 11-46
Changing the Quiet Period 11-47
Changing the Switch-to-Client Retransmission Time 11-47
Setting the Switch-to-Client Frame-Retransmission Number 11-48
Setting the Re-Authentication Number 11-49
Enabling MAC Move 11-49
Configuring 802.1x Accounting 11-50
Configuring a Guest VLAN 11-51
Configuring a Restricted VLAN 11-52
Configuring the Inaccessible Authentication Bypass Feature 11-53
Configuring 802.1x Authentication with WoL 11-56
Configuring MAC Authentication Bypass 11-56
Configuring 802.1x User Distribution 11-57
Configuring NAC Layer 2 IEEE 802.1x Validation 11-58
Configuring an Authenticator and a Supplicant Switch with NEAT 11-59
Configuring NEAT with ASP 11-61
Configuring 802.1x Authentication with Downloadable ACLs and Redirect URLs 11-61
Configuring Downloadable ACLs 11-61
Configuring a Downloadable Policy 11-62
Configuring VLAN ID-based MAC Authentication 11-63
Configuring Flexible Authentication Ordering 11-64
Configuring Open1x 11-64
Configuring a Web Authentication Local Banner 11-65
Disabling 802.1x Authentication on the Port 11-66
Resetting the 802.1x Authentication Configuration to the Default Values 11-66
Configuring MKA and MACsec 11-67
Configuring an MKA Policy 11-67
Configuring MACsec on an Interface 11-67
Displaying 802.1x Statistics and Status 11-69
CHAPTER
12 Configuring Web-Based Authentication 12-1
Understanding Web-Based Authentication 12-1
Device Roles 12-2
Host Detection 12-2
Contents
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Session Creation 12-3
Authentication Process 12-3
Local Web Authentication Banner 12-4
Web Authentication Customizable Web Pages 12-6
Guidelines 12-6
Web-based Authentication Interactions with Other Features 12-7
Port Security 12-7
LAN Port IP 12-8
Gateway IP 12-8
ACLs 12-8
Context-Based Access Control 12-8
802.1x Authentication 12-8
EtherChannel 12-8
Configuring Web-Based Authentication 12-9
Default Web-Based Authentication Configuration 12-9
Web-Based Authentication Configuration Guidelines and Restrictions 12-9
Web-Based Authentication Configuration Task List 12-10
Configuring the Authentication Rule and Interfaces 12-10
Configuring AAA Authentication 12-11
Configuring Switch-to-RADIUS-Server Communication 12-11
Configuring the HTTP Server 12-13
Customizing the Authentication Proxy Web Pages 12-13
Specifying a Redirection URL for Successful Login 12-15
Configuring an AAA Fail Policy 12-15
Configuring the Web-Based Authentication Parameters 12-16
Configuring a Web Authentication Local Banner 12-16
Removing Web-Based Authentication Cache Entries 12-17
Displaying Web-Based Authentication Status 12-17
CHAPTER
13 Configuring Interface Characteristics 13-1
Interface Types 13-1
Port-Based VLANs 13-2
Switch Ports 13-2
Access Ports 13-3
Trunk Ports 13-3
Tunnel Ports 13-4
Routed Ports 13-4
Switch Virtual Interfaces 13-5
SVI Autostate Exclude 13-6
Contents
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EtherChannel Port Groups 13-6
10-Gigabit Ethernet Interfaces 13-7
Power over Ethernet Ports 13-7
Supported Protocols and Standards 13-7
Powered-Device Detection and Initial Power Allocation 13-8
Power Management Modes 13-9
Power Monitoring and Power Policing 13-10
Connecting Interfaces 13-12
Using the Switch USB Ports 13-13
USB Mini-Type B Console Port 13-13
Console Port Change Logs 13-13
Configuring the Console Media Type 13-14
Configuring the USB Inactivity Timeout 13-15
USB Type A Port 13-16
Using Interface Configuration Mode 13-17
Procedures for Configuring Interfaces 13-18
Configuring a Range of Interfaces 13-19
Configuring and Using Interface Range Macros 13-21
Using the Ethernet Management Port 13-22
Understanding the Ethernet Management Port 13-23
Supported Features on the Ethernet Management Port 13-25
Configuring the Ethernet Management Port 13-25
TFTP and the Ethernet Management Port 13-26
Configuring Ethernet Interfaces 13-26
Default Ethernet Interface Configuration 13-27
Configuring Interface Speed and Duplex Mode 13-28
Speed and Duplex Configuration Guidelines 13-28
Setting the Interface Speed and Duplex Parameters 13-29
Configuring IEEE 802.3x Flow Control 13-30
Configuring Auto-MDIX on an Interface 13-31
Configuring a Power Management Mode on a PoE Port 13-32
Budgeting Power for Devices Connected to a PoE Port 13-33
Configuring Power Policing 13-35
Adding a Description for an Interface 13-36
Configuring Layer 3 Interfaces 13-37
Configuring SVI Autostate Exclude 13-39
Configuring the System MTU 13-39
Configuring the Cisco RPS 2300 in a Mixed Stack 13-42
Configuring the Power Supplies 13-44
Contents
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Monitoring and Maintaining the Interfaces 13-45
Monitoring Interface Status 13-45
Clearing and Resetting Interfaces and Counters 13-46
Shutting Down and Restarting the Interface 13-47
CHAPTER
14 Configuring Auto Smartports Macros 14-1
Understanding Auto Smartports and Static Smartports Macros 14-1
Auto Smartports and Cisco Medianet 14-2
Configuring Auto Smartports 14-3
Default Auto Smartports Configuration 14-3
Auto Smartports Configuration Guidelines 14-4
Enabling Auto Smartports 14-5
Configuring Auto Smartports Default Parameter Values 14-6
Configuring Auto Smartports MAC-Address Groups 14-7
Configuring Auto Smartports Macro Persistent 14-8
Configuring Auto Smartports Built-In Macro Options 14-9
Creating User-Defined Event Triggers 14-11
Configuring Auto Smartports User-Defined Macros 14-15
Configuring Static Smartports Macros 14-17
Default Static Smartports Configuration 14-17
Static Smartports Configuration Guidelines 14-17
Applying Static Smartports Macros 14-18
Displaying Auto Smartports and Static Smartports Macros 14-20
CHAPTER
15 Configuring VLANs 15-1
Understanding VLANs 15-1
Supported VLANs 15-2
VLAN Port Membership Modes 15-3
Configuring Normal-Range VLANs 15-4
Token Ring VLANs 15-5
Normal-Range VLAN Configuration Guidelines 15-5
Configuring Normal-Range VLANs 15-6
Saving VLAN Configuration 15-6
Default Ethernet VLAN Configuration 15-7
Creating or Modifying an Ethernet VLAN 15-7
Deleting a VLAN 15-8
Assigning Static-Access Ports to a VLAN 15-9
Contents
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Configuring Extended-Range VLANs 15-10
Default VLAN Configuration 15-10
Extended-Range VLAN Configuration Guidelines 15-10
Creating an Extended-Range VLAN 15-11
Creating an Extended-Range VLAN with an Internal VLAN ID 15-13
Displaying VLANs 15-14
Configuring VLAN Trunks 15-14
Trunking Overview 15-14
Encapsulation Types 15-16
IEEE 802.1Q Configuration Considerations 15-17
Default Layer 2 Ethernet Interface VLAN Configuration 15-17
Configuring an Ethernet Interface as a Trunk Port 15-17
Interaction with Other Features 15-18
Configuring a Trunk Port 15-18
Defining the Allowed VLANs on a Trunk 15-19
Changing the Pruning-Eligible List 15-20
Configuring the Native VLAN for Untagged Traffic 15-21
Configuring Trunk Ports for Load Sharing 15-22
Load Sharing Using STP Port Priorities 15-22
Load Sharing Using STP Path Cost 15-24
Configuring VMPS 15-25
Understanding VMPS 15-26
Dynamic-Access Port VLAN Membership 15-26
Default VMPS Client Configuration 15-27
VMPS Configuration Guidelines 15-27
Configuring the VMPS Client 15-28
Entering the IP Address of the VMPS 15-28
Configuring Dynamic-Access Ports on VMPS Clients 15-28
Reconfirming VLAN Memberships 15-29
Changing the Reconfirmation Interval 15-29
Changing the Retry Count 15-30
Monitoring the VMPS 15-30
Troubleshooting Dynamic-Access Port VLAN Membership 15-31
VMPS Configuration Example 15-31
CHAPTER
16 Configuring VTP 16-1
Understanding VTP 16-1
The VTP Domain 16-2
VTP Modes 16-3
Contents
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VTP Advertisements 16-4
VTP Version 2 16-4
VTP Version 3 16-5
VTP Pruning 16-6
VTP and Switch Stacks 16-7
Configuring VTP 16-8
Default VTP Configuration 16-8
VTP Configuration Guidelines 16-9
Domain Names 16-9
Passwords 16-9
VTP Version 16-10
Configuration Requirements 16-11
Configuring VTP Mode 16-11
Configuring a VTP Version 3 Password 16-13
Configuring a VTP Version 3 Primary Server 16-14
Enabling the VTP Version 16-14
Enabling VTP Pruning 16-15
Configuring VTP on a Per-Port Basis 16-16
Adding a VTP Client Switch to a VTP Domain 16-16
Monitoring VTP 16-17
CHAPTER
17 Configuring Voice VLAN 17-1
Understanding Voice VLAN 17-1
Cisco IP Phone Voice Traffic 17-2
Cisco IP Phone Data Traffic 17-2
Configuring Voice VLAN 17-3
Default Voice VLAN Configuration 17-3
Voice VLAN Configuration Guidelines 17-3
Configuring a Port Connected to a Cisco 7960 IP Phone 17-4
Configuring Cisco IP Phone Voice Traffic 17-5
Configuring the Priority of Incoming Data Frames 17-6
Displaying Voice VLAN 17-7
CHAPTER
18 Configuring Private VLANs 18-1
Understanding Private VLANs 18-1
IP Addressing Scheme with Private VLANs 18-3
Private VLANs across Multiple Switches 18-4
Contents
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Private-VLAN Interaction with Other Features 18-4
Private VLANs and Unicast, Broadcast, and Multicast Traffic 18-4
Private VLANs and SVIs 18-5
Private VLANs and Switch Stacks 18-5
Configuring Private VLANs 18-5
Tasks for Configuring Private VLANs 18-6
Default Private-VLAN Configuration 18-6
Private-VLAN Configuration Guidelines 18-6
Secondary and Primary VLAN Configuration 18-6
Private-VLAN Port Configuration 18-8
Limitations with Other Features 18-8
Configuring and Associating VLANs in a Private VLAN 18-9
Configuring a Layer 2 Interface as a Private-VLAN Host Port 18-11
Configuring a Layer 2 Interface as a Private-VLAN Promiscuous Port 18-12
Mapping Secondary VLANs to a Primary VLAN Layer 3 VLAN Interface 18-13
Monitoring Private VLANs 18-14
CHAPTER
19 Configuring IEEE 802.1Q and Layer 2 Protocol Tunneling 19-1
Understanding IEEE 802.1Q Tunneling 19-1
Configuring IEEE 802.1Q Tunneling 19-4
Default IEEE 802.1Q Tunneling Configuration 19-4
IEEE 802.1Q Tunneling Configuration Guidelines 19-4
Native VLANs 19-4
System MTU 19-5
IEEE 802.1Q Tunneling and Other Features 19-6
Configuring an IEEE 802.1Q Tunneling Port 19-7
Understanding Layer 2 Protocol Tunneling 19-8
Configuring Layer 2 Protocol Tunneling 19-10
Default Layer 2 Protocol Tunneling Configuration 19-11
Layer 2 Protocol Tunneling Configuration Guidelines 19-12
Configuring Layer 2 Protocol Tunneling 19-13
Configuring Layer 2 Tunneling for EtherChannels 19-14
Configuring the SP Edge Switch 19-14
Configuring the Customer Switch 19-16
Monitoring and Maintaining Tunneling Status 19-18
CHAPTER
20 Configuring STP 20-1
Understanding Spanning-Tree Features 20-1
STP Overview 20-2
Contents
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Spanning-Tree Topology and BPDUs 20-3
Bridge ID, Switch Priority, and Extended System ID 20-4
Spanning-Tree Interface States 20-5
Blocking State 20-6
Listening State 20-7
Learning State 20-7
Forwarding State 20-7
Disabled State 20-7
How a Switch or Port Becomes the Root Switch or Root Port 20-8
Spanning Tree and Redundant Connectivity 20-8
Spanning-Tree Address Management 20-8
Accelerated Aging to Retain Connectivity 20-9
Spanning-Tree Modes and Protocols 20-9
Supported Spanning-Tree Instances 20-10
Spanning-Tree Interoperability and Backward Compatibility 20-10
STP and IEEE 802.1Q Trunks 20-10
VLAN-Bridge Spanning Tree 20-11
Spanning Tree and Switch Stacks 20-11
Configuring Spanning-Tree Features 20-12
Default Spanning-Tree Configuration 20-12
Spanning-Tree Configuration Guidelines 20-13
Changing the Spanning-Tree Mode. 20-14
Disabling Spanning Tree 20-15
Configuring the Root Switch 20-15
Configuring a Secondary Root Switch 20-17
Configuring Port Priority 20-18
Configuring Path Cost 20-20
Configuring the Switch Priority of a VLAN 20-21
Configuring Spanning-Tree Timers 20-22
Configuring the Hello Time 20-22
Configuring the Forwarding-Delay Time for a VLAN 20-23
Configuring the Maximum-Aging Time for a VLAN 20-23
Configuring the Transmit Hold-Count 20-24
Displaying the Spanning-Tree Status 20-24
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Cisco Catalyst 3750-X Series Software Configuration Manual

Category
Software
Type
Software Configuration Manual
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