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Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Software Release 8.1 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Customer Order Number: DOC-7815486= Text Part Number: 78-15486-01
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Software Release 8.1 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Customer Order Number: DOC-7815486= Text Part Number: 78-15486-01
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..., and iQuick Study are registered trademarks of Cisco Systems, Inc. and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Empowering the Internet Generation, Enterprise..., ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED "AS IS" WITH ALL FAULTS. All other countries. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as ...
..., and iQuick Study are registered trademarks of Cisco Systems, Inc. and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Empowering the Internet Generation, Enterprise..., ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED "AS IS" WITH ALL FAULTS. All other countries. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as ...
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1 C H A P T E R 2 C H A P T E R 78-15486-01 CONTENTS Preface xxiii Audience xxiii Organization xxiii Related Documentation xxv Conventions xxvi Obtaining Documentation xxvii Cisco.com xxvii Documentation CD-ROM xxvii Ordering Documentation xxvii Documentation Feedback xxviii Obtaining Technical Assistance xxviii Cisco.com xxviii Technical Assistance Center xxix Obtaining Additional Publications and Information xxx Product Overview 1-1 Catalyst 4000 Series...
1 C H A P T E R 2 C H A P T E R 78-15486-01 CONTENTS Preface xxiii Audience xxiii Organization xxiii Related Documentation xxv Conventions xxvi Obtaining Documentation xxvii Cisco.com xxvii Documentation CD-ROM xxvii Ordering Documentation xxvii Documentation Feedback xxviii Obtaining Technical Assistance xxviii Cisco.com xxviii Technical Assistance Center xxix Obtaining Additional Publications and Information xxx Product Overview 1-1 Catalyst 4000 Series...
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Contents 3 C H A P T E R 4 C H A P T E R Using Command Aliases 2-7 Specifying Modules, Ports, and VLANs 2-7 Specifying MAC Addresses 2-8 Specifying IP Addresses, Host Names, and IP Aliases 2-8 ROM Monitor CLI 2-9 Example of a Catalyst 4003 Bootup Display 2-9 Configuring the Switch IP Address and Default Gateway 3-1 Understanding How the Switch Management Interfaces Work 3-1 Understanding How Automatic IP Configuration Works 3-2 Automatic IP Configuration Overview 3-2 Understanding DHCP 3-3 Understanding RARP 3-4 Preparing to Configure the IP Address and Default Gateway 3-4 Default IP Address...
Contents 3 C H A P T E R 4 C H A P T E R Using Command Aliases 2-7 Specifying Modules, Ports, and VLANs 2-7 Specifying MAC Addresses 2-8 Specifying IP Addresses, Host Names, and IP Aliases 2-8 ROM Monitor CLI 2-9 Example of a Catalyst 4003 Bootup Display 2-9 Configuring the Switch IP Address and Default Gateway 3-1 Understanding How the Switch Management Interfaces Work 3-1 Understanding How Automatic IP Configuration Works 3-2 Automatic IP Configuration Overview 3-2 Understanding DHCP 3-3 Understanding RARP 3-4 Preparing to Configure the IP Address and Default Gateway 3-4 Default IP Address...
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Contents 5 C H A P T E R 6 C H A P T E R 78-15486-01 Configuring Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Understanding How Port Negotiation Works 5-3 Understanding How Oversubscribed Gigabit Ethernet Works 5-3 Default Gigabit Ethernet Configuration 5-6 Configuring Gigabit Ethernet Ports 5-7 Assigning Gigabit Ethernet Port Names 5-7 Configuring Gigabit Ethernet Port Priority Levels 5-7 Configuring Flow Control on Gigabit Ethernet Ports 5-8 Enabling Port Negotiation on Gigabit Ethernet Ports 5-9 ...
Contents 5 C H A P T E R 6 C H A P T E R 78-15486-01 Configuring Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Understanding How Port Negotiation Works 5-3 Understanding How Oversubscribed Gigabit Ethernet Works 5-3 Default Gigabit Ethernet Configuration 5-6 Configuring Gigabit Ethernet Ports 5-7 Assigning Gigabit Ethernet Port Names 5-7 Configuring Gigabit Ethernet Port Priority Levels 5-7 Configuring Flow Control on Gigabit Ethernet Ports 5-8 Enabling Port Negotiation on Gigabit Ethernet Ports 5-9 ...
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Contents Configuration Example of a Four-Port Fast EtherChannel 6-12 Configuration Example of Two-Port Gigabit EtherChannel 6-14 Understanding the LACP 6-16 LACP Modes 6-16 LACP Parameters 6-17 Configuring EtherChannel Using LACP 6-18 Specifying the EtherChannel Protocol 6-18 Specifying the System Priority 6-19 Specifying the Port Priority 6-19 Specifying an Administrative Key Value 6-19 Changing the Channel Mode 6-20 Specifying the Channel Path Cost 6-21 Specifying the Channel VLAN Cost 6-21 Clearing LACP Statistics 6-21 Displaying EtherChannel Traffic Utilization 6-21 Disabling an ...
Contents Configuration Example of a Four-Port Fast EtherChannel 6-12 Configuration Example of Two-Port Gigabit EtherChannel 6-14 Understanding the LACP 6-16 LACP Modes 6-16 LACP Parameters 6-17 Configuring EtherChannel Using LACP 6-18 Specifying the EtherChannel Protocol 6-18 Specifying the System Priority 6-19 Specifying the Port Priority 6-19 Specifying an Administrative Key Value 6-19 Changing the Channel Mode 6-20 Specifying the Channel Path Cost 6-21 Specifying the Channel VLAN Cost 6-21 Clearing LACP Statistics 6-21 Displaying EtherChannel Traffic Utilization 6-21 Disabling an ...
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Contents 8 C H A P T E R 78-15486-01 MST Region 7-19 Message Age and Hop Count 7-21 MST-to-PVST+ Interoperability 7-21 Understanding How BPDU Skewing Works 7-22 Using PVST+ 7-22 Default PVST+ Configuration 7-23 Setting the PVST+ Bridge ID Priority 7-23 Configuring the PVST+ Port Cost 7-25 Configuring PVST+ Port Priority 7-25 Configuring the PVST+ Default Port Cost Mode 7-26 Configuring the PVST+ Port VLAN Cost 7-26 Configuring the PVST+ Port VLAN Priority 7-27 Disabling the PVST+ Mode on a VLAN 7-28 Using Rapid PVST+ 7-28 Using MISTP-PVST+ or MISTP 7-30 Default MISTP Mode Configuration 7-30 ...
Contents 8 C H A P T E R 78-15486-01 MST Region 7-19 Message Age and Hop Count 7-21 MST-to-PVST+ Interoperability 7-21 Understanding How BPDU Skewing Works 7-22 Using PVST+ 7-22 Default PVST+ Configuration 7-23 Setting the PVST+ Bridge ID Priority 7-23 Configuring the PVST+ Port Cost 7-25 Configuring PVST+ Port Priority 7-25 Configuring the PVST+ Default Port Cost Mode 7-26 Configuring the PVST+ Port VLAN Cost 7-26 Configuring the PVST+ Port VLAN Priority 7-27 Disabling the PVST+ Mode on a VLAN 7-28 Using Rapid PVST+ 7-28 Using MISTP-PVST+ or MISTP 7-30 Default MISTP Mode Configuration 7-30 ...
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Contents Understanding How PortFast BPDU Guard Works 8-2 Understanding How PortFast BPDU Filtering Works 8-2 Understanding How UplinkFast Works 8-3 Understanding How BackboneFast Works 8-4 Understanding How Loop Guard Works 8-6 Configuring PortFast 8-8 Enabling PortFast on an Access Port 8-8 Enabling PortFast on a Trunk Port 8-9 Disabling PortFast 8-10 Resetting PortFast 8-11 Configuring PortFast BPDU Guard 8-11 Enabling PortFast BPDU Guard 8-11 Disabling PortFast BPDU Guard 8-12 Configuring PortFast BPDU Filtering 8-13 Enabling PortFast BPDU Filtering 8-13 Disabling PortFast BPDU Filtering ...
Contents Understanding How PortFast BPDU Guard Works 8-2 Understanding How PortFast BPDU Filtering Works 8-2 Understanding How UplinkFast Works 8-3 Understanding How BackboneFast Works 8-4 Understanding How Loop Guard Works 8-6 Configuring PortFast 8-8 Enabling PortFast on an Access Port 8-8 Enabling PortFast on a Trunk Port 8-9 Disabling PortFast 8-10 Resetting PortFast 8-11 Configuring PortFast BPDU Guard 8-11 Enabling PortFast BPDU Guard 8-11 Disabling PortFast BPDU Guard 8-12 Configuring PortFast BPDU Filtering 8-13 Enabling PortFast BPDU Filtering 8-13 Disabling PortFast BPDU Filtering ...
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Contents 10 C H A P T E R 78-15486-01 Configuring a VTP Client 9-7 Configuring VTP (VTP Transparent Mode) 9-8 Disabling VTP Using the Off Mode 9-9 Enabling VTP Version 2 9-9 Disabling VTP Version 2 9-10 Enabling VTP Pruning 9-11 Disabling VTP Pruning 9-12 Displaying VTP Statistics 9-12 Understanding How VTP Version 3 Works 9-13 VTP Version 3 Authentication 9-13 VTP Version 3 Per-Port Configuration 9-14 VTP Version 3 Domains, Modes, and Partitions 9-14 VTP Version 3 Modes 9-18 VTP Version 3 Databases 9-19 Default VTP Version 3 Configuration 9-22 Configuring VTP Version 3 9-22 Enabling VTP ...
Contents 10 C H A P T E R 78-15486-01 Configuring a VTP Client 9-7 Configuring VTP (VTP Transparent Mode) 9-8 Disabling VTP Using the Off Mode 9-9 Enabling VTP Version 2 9-9 Disabling VTP Version 2 9-10 Enabling VTP Pruning 9-11 Disabling VTP Pruning 9-12 Displaying VTP Statistics 9-12 Understanding How VTP Version 3 Works 9-13 VTP Version 3 Authentication 9-13 VTP Version 3 Per-Port Configuration 9-14 VTP Version 3 Domains, Modes, and Partitions 9-14 VTP Version 3 Modes 9-18 VTP Version 3 Databases 9-19 Default VTP Version 3 Configuration 9-22 Configuring VTP Version 3 9-22 Enabling VTP ...
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Contents 11 C H A P T E R 12 C H A P T E R Configuring Private VLANs 10-16 Private VLAN Configuration Guidelines 10-17 Creating a Private VLAN 10-19 Viewing the Port Capability of a Private VLAN Port 10-22 Deleting a Private VLAN 10-22 Deleting an Isolated or Community VLAN 10-23 Deleting a Private VLAN Mapping 10-23 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports 11-1 Understanding How VLAN Trunks Work 11-1 Trunking Overview 11-1 Trunking Modes and Encapsulation Types 11-2 Trunking Support 11-3 802.1Q Trunk Restrictions 11-4 Default Trunk Configuration 11-5 Configuring a...
Contents 11 C H A P T E R 12 C H A P T E R Configuring Private VLANs 10-16 Private VLAN Configuration Guidelines 10-17 Creating a Private VLAN 10-19 Viewing the Port Capability of a Private VLAN Port 10-22 Deleting a Private VLAN 10-22 Deleting an Isolated or Community VLAN 10-23 Deleting a Private VLAN Mapping 10-23 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports 11-1 Understanding How VLAN Trunks Work 11-1 Trunking Overview 11-1 Trunking Modes and Encapsulation Types 11-2 Trunking Support 11-3 802.1Q Trunk Restrictions 11-4 Default Trunk Configuration 11-5 Configuring a...
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Contents 13 C H A P T E R 14 C H A P T E R 78-15486-01 Troubleshooting VMPS 12-11 Troubleshooting Dynamic Ports 12-11 VMPS Example 12-12 Dynamic Port VLAN Membership with Auxiliary VLANs 12-14 Configuration Guidelines 12-15 Configuring Dynamic Port VLAN Membership with Auxiliary VLANs 12-15 Configuring GVRP 13-1 Understanding How GVRP Works 13-1 GVRP Hardware and Software Requirements 13-1 Default GVRP Configuration 13-2 GVRP Configuration Guidelines 13-2 Configuring GVRP on the Switch 13-2 Enabling GVRP Globally 13-2 Enabling GVRP on Individual 802.1Q Trunk Ports 13-3 Enabling GVRP Dynamic ...
Contents 13 C H A P T E R 14 C H A P T E R 78-15486-01 Troubleshooting VMPS 12-11 Troubleshooting Dynamic Ports 12-11 VMPS Example 12-12 Dynamic Port VLAN Membership with Auxiliary VLANs 12-14 Configuration Guidelines 12-15 Configuring Dynamic Port VLAN Membership with Auxiliary VLANs 12-15 Configuring GVRP 13-1 Understanding How GVRP Works 13-1 GVRP Hardware and Software Requirements 13-1 Default GVRP Configuration 13-2 GVRP Configuration Guidelines 13-2 Configuring GVRP on the Switch 13-2 Enabling GVRP Globally 13-2 Enabling GVRP on Individual 802.1Q Trunk Ports 13-3 Enabling GVRP Dynamic ...
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Contents 15 C H A P T E R Displaying QoS Information 14-7 Reverting to QoS Defaults 14-7 Disabling QoS 14-7 Configuring Multicast Services 15-1 Understanding How Multicasting Works 15-1 Understanding Multicasting and Multicast Services Operation 15-1 Joining a Multicast Group 15-2 Leaving a Multicast Group 15-2 Understanding GMRP Operation 15-3 Configuring CGMP 15-4 CGMP Hardware and Software Requirements 15-4 Default CGMP Configuration 15-4 Enabling CGMP 15-4 Enabling CGMP Leave Processing 15-5 Enabling CGMP Fast-Leave Processing 15-5 Displaying Multicast Router Information 15-6 Displaying ...
Contents 15 C H A P T E R Displaying QoS Information 14-7 Reverting to QoS Defaults 14-7 Disabling QoS 14-7 Configuring Multicast Services 15-1 Understanding How Multicasting Works 15-1 Understanding Multicasting and Multicast Services Operation 15-1 Joining a Multicast Group 15-2 Leaving a Multicast Group 15-2 Understanding GMRP Operation 15-3 Configuring CGMP 15-4 CGMP Hardware and Software Requirements 15-4 Default CGMP Configuration 15-4 Enabling CGMP 15-4 Enabling CGMP Leave Processing 15-5 Enabling CGMP Fast-Leave Processing 15-5 Displaying Multicast Router Information 15-6 Displaying ...
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Contents 16 C H A P T E R 17 C H A P T E R 18 C H A P T E R 78-15486-01 Disabling Multicast Group Entries 15-17 Filtering IGMP Traffic 15-17 Using IGMP Traffic Filtering 15-18 IGMP Software Requirements 15-18 Default IGMP Filter Configuration 15-18 IGMP Multicast Filter Activation 15-19 Configuring Port IP Multicast Filtering 15-20 Configuring Port Security 16-1 Understanding How Port Security Works 16-1 Allowing Traffic Based on the Host MAC Address 16-1 Restricting Traffic Based on the Host MAC Address 16-2 Blocking Unicast Flood Packets on Secure Ports 16-3 Port Security Configuration ...
Contents 16 C H A P T E R 17 C H A P T E R 18 C H A P T E R 78-15486-01 Disabling Multicast Group Entries 15-17 Filtering IGMP Traffic 15-17 Using IGMP Traffic Filtering 15-18 IGMP Software Requirements 15-18 Default IGMP Filter Configuration 15-18 IGMP Multicast Filter Activation 15-19 Configuring Port IP Multicast Filtering 15-20 Configuring Port Security 16-1 Understanding How Port Security Works 16-1 Allowing Traffic Based on the Host MAC Address 16-1 Restricting Traffic Based on the Host MAC Address 16-2 Blocking Unicast Flood Packets on Secure Ports 16-3 Port Security Configuration ...
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Contents 19 C H A P T E R 20 C H A P T E R 21 C H A P T E R Configuring the IP Permit List on the Switch 18-2 Adding IP Addresses to the IP Permit List 18-2 Enabling the IP Permit List 18-3 Disabling the IP Permit List 18-4 Clearing an IP Permit List Entry 18-4 Configuring Protocol Filtering 19-1 Understanding How Protocol Filtering Works 19-1 Default Protocol Filtering Configuration 19-2 Configuring Protocol Filtering on the Switch 19-2 Configuring Protocol Filtering 19-2 Disabling Protocol Filtering 19-3 Checking Status and Connectivity 20-1 Checking Module Status 20-1 Checking Port Status...
Contents 19 C H A P T E R 20 C H A P T E R 21 C H A P T E R Configuring the IP Permit List on the Switch 18-2 Adding IP Addresses to the IP Permit List 18-2 Enabling the IP Permit List 18-3 Disabling the IP Permit List 18-4 Clearing an IP Permit List Entry 18-4 Configuring Protocol Filtering 19-1 Understanding How Protocol Filtering Works 19-1 Default Protocol Filtering Configuration 19-2 Configuring Protocol Filtering on the Switch 19-2 Configuring Protocol Filtering 19-2 Disabling Protocol Filtering 19-3 Checking Status and Connectivity 20-1 Checking Module Status 20-1 Checking Port Status...
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Contents 22 C H A P T E R 23 C H A P T E R 24 C H A P T E R 78-15486-01 Setting the CDP Enable State on a Port 21-2 Setting the CDP Message Interval 21-4 Setting the CDP Holdtime 21-4 Displaying CDP Neighbor Information 21-5 Using Switch TopN Reports 22-1 Understanding How Switch TopN Reports Works 22-1 Running Switch TopN Reports Without the Background Option 22-2 Running Switch TopN Reports with the Background Option 22-2 Running and Viewing Switch TopN Reports 22-3 Configuring UDLD 23-1 Understanding How UDLD Works 23-1 UDLD Software and Hardware Requirements 23-2 Default UDLD ...
Contents 22 C H A P T E R 23 C H A P T E R 24 C H A P T E R 78-15486-01 Setting the CDP Enable State on a Port 21-2 Setting the CDP Message Interval 21-4 Setting the CDP Holdtime 21-4 Displaying CDP Neighbor Information 21-5 Using Switch TopN Reports 22-1 Understanding How Switch TopN Reports Works 22-1 Running Switch TopN Reports Without the Background Option 22-2 Running Switch TopN Reports with the Background Option 22-2 Running and Viewing Switch TopN Reports 22-3 Configuring UDLD 23-1 Understanding How UDLD Works 23-1 UDLD Software and Hardware Requirements 23-2 Default UDLD ...
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Contents Configuring SNMPv3 from the CLI 24-14 Using CiscoWorks2000 24-17 25 C H A P T E R Configuring RMON 25-1 Understanding How RMON Works 25-1 Enabling RMON 25-2 Viewing RMON Data 25-2 Supported RMON and RMON2 MIB Objects 25-2 26 C H A P T E R Configuring SPAN and RSPAN 26-1 Understanding How SPAN and RSPAN Work 26-1 SPAN Session 26-1 Destination Port 26-2 Source Port 26-2 Reflector Port 26-3 Ingress SPAN 26-3 Egress SPAN 26-3 VSPAN 26-3 Trunk VLAN Filtering 26-4 SPAN Traffic 26-4 SPAN and RSPAN Session Limits 26-4 Configuring SPAN 26-4 Understanding How SPAN Works 26-4 SPAN ...
Contents Configuring SNMPv3 from the CLI 24-14 Using CiscoWorks2000 24-17 25 C H A P T E R Configuring RMON 25-1 Understanding How RMON Works 25-1 Enabling RMON 25-2 Viewing RMON Data 25-2 Supported RMON and RMON2 MIB Objects 25-2 26 C H A P T E R Configuring SPAN and RSPAN 26-1 Understanding How SPAN and RSPAN Work 26-1 SPAN Session 26-1 Destination Port 26-2 Source Port 26-2 Reflector Port 26-3 Ingress SPAN 26-3 Egress SPAN 26-3 VSPAN 26-3 Trunk VLAN Filtering 26-4 SPAN Traffic 26-4 SPAN and RSPAN Session Limits 26-4 Configuring SPAN 26-4 Understanding How SPAN Works 26-4 SPAN ...
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Contents 28 C H A P T E R 78-15486-01 Configuring a Login Banner 27-4 Clearing the Login Banner 27-5 Enabling or Disabling the "Cisco Systems Console" Telnet Login Banner 27-5 Defining and Using Command Aliases 27-6 Defining and Using IP Aliases 27-7 Configuring Permanent and Static ARP Entries 27-8 ...
Contents 28 C H A P T E R 78-15486-01 Configuring a Login Banner 27-4 Clearing the Login Banner 27-5 Enabling or Disabling the "Cisco Systems Console" Telnet Login Banner 27-5 Defining and Using Command Aliases 27-6 Defining and Using IP Aliases 27-7 Configuring Permanent and Static ARP Entries 27-8 ...
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Contents 29 C H A P T E R 30 C H A P T E R Setting the Default Power Allocation for a Port 28-19 Displaying the Power Status for Modules and Individual Ports 28-19 Configuring VoIP 29-1 Hardware and Software Requirements 29-1 Overview of IP Phones 29-2 Configuring VoIP on a Switch 29-3 Configuring Switch Access Using AAA 30-1 Understanding How Authentication Works 30-1 Understanding How Login Authentication Works 30-2 Understanding How Local Authentication Works 30-2 Understanding How Local User Authentication Works 30-3 Understanding How TACACS+ Authentication Works 30-3 Understanding How ...
Contents 29 C H A P T E R 30 C H A P T E R Setting the Default Power Allocation for a Port 28-19 Displaying the Power Status for Modules and Individual Ports 28-19 Configuring VoIP 29-1 Hardware and Software Requirements 29-1 Overview of IP Phones 29-2 Configuring VoIP on a Switch 29-3 Configuring Switch Access Using AAA 30-1 Understanding How Authentication Works 30-1 Understanding How Login Authentication Works 30-2 Understanding How Local Authentication Works 30-2 Understanding How Local User Authentication Works 30-3 Understanding How TACACS+ Authentication Works 30-3 Understanding How ...
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Contents 31 C H A P T E R 78-15486-01 Accounting Events 30-48 Specifying When to Create Accounting Records 30-48 Specifying RADIUS Servers 30-49 Updating the Server 30-50 Suppressing Accounting 30-50 Configuring Accounting 30-50 Accounting Default Configuration 30-50 Accounting Configuration Guidelines 30-50 Configuring Accounting 30-51 Accounting Example 30-53 Configuring 802.1x Authentication 31-1 Understanding How 802.1x Authentication Works 31-1 Device Roles 31-2 Authentication Initiation and Message Exchange 31-3 Ports in Authorized and Unauthorized States 31-4 Authentication Server 31...
Contents 31 C H A P T E R 78-15486-01 Accounting Events 30-48 Specifying When to Create Accounting Records 30-48 Specifying RADIUS Servers 30-49 Updating the Server 30-50 Suppressing Accounting 30-50 Configuring Accounting 30-50 Accounting Default Configuration 30-50 Accounting Configuration Guidelines 30-50 Configuring Accounting 30-51 Accounting Example 30-53 Configuring 802.1x Authentication 31-1 Understanding How 802.1x Authentication Works 31-1 Device Roles 31-2 Authentication Initiation and Message Exchange 31-3 Ports in Authorized and Unauthorized States 31-4 Authentication Server 31...
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Contents 32 C H A P T E R 33 C H A P T E R Setting the Trace Severity 31-15 Using the show Commands 31-16 Modifying the Switch Boot Configuration 32-1 Understanding How the Switch Boot Configuration Works 32-1 Understanding the Boot Process 32-1 Understanding the ROM Monitor 32-2 Understanding the Configuration Register 32-2 Understanding the BOOT Environment Variable 32-3 Understanding the CONFIG_FILE Environment Variable 32-3 Default Switch Boot Configuration 32-4 Setting the Configuration Register 32-4 Setting the Boot Field in the Configuration Register 32-4 Setting CONFIG_FILE ...
Contents 32 C H A P T E R 33 C H A P T E R Setting the Trace Severity 31-15 Using the show Commands 31-16 Modifying the Switch Boot Configuration 32-1 Understanding How the Switch Boot Configuration Works 32-1 Understanding the Boot Process 32-1 Understanding the ROM Monitor 32-2 Understanding the Configuration Register 32-2 Understanding the BOOT Environment Variable 32-3 Understanding the CONFIG_FILE Environment Variable 32-3 Default Switch Boot Configuration 32-4 Setting the Configuration Register 32-4 Setting the Boot Field in the Configuration Register 32-4 Setting CONFIG_FILE ...