Software Guide
Page 1
Software Configuration Guide Catalyst 4000 Family Catalyst 2948G Catalyst 2980G Software Releases 6.3 and 6.4 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-7812647= Text Part Number: 78-12647-02
Software Configuration Guide Catalyst 4000 Family Catalyst 2948G Catalyst 2980G Software Releases 6.3 and 6.4 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-7812647= Text Part Number: 78-12647-02
Software Guide
Page 2
...with the Software Configuration Guide and the Command Reference for your switch. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. Copyright © 1981, Regents of the University of Cisco Systems, Inc.; This document is an adaptation of a ...trademarks of the word partner does not imply a partnership relationship between Cisco and any other company. (0208R) Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 Copyright © 2000-2003, Cisco Systems, Inc. and certain other trademarks mentioned in this document or ...
...with the Software Configuration Guide and the Command Reference for your switch. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. Copyright © 1981, Regents of the University of Cisco Systems, Inc.; This document is an adaptation of a ...trademarks of the word partner does not imply a partnership relationship between Cisco and any other company. (0208R) Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 Copyright © 2000-2003, Cisco Systems, Inc. and certain other trademarks mentioned in this document or ...
Software Guide
Page 3
... xxvii Documentation Feedback xxviii Obtaining Technical Assistance xxviii Cisco.com xxviii Technical Assistance Center xxviii Cisco TAC Web Site xxix Cisco TAC Escalation Center xxix Getting Started Product Overview 1-1 Catalyst 4000 Family Switches 1-1 Catalyst 2948G Switch 1-2 Catalyst 2980G Switch 1-2 Supervisor Engine Software 1-3 Using the Command-Line Interface 2-1 Overview of the Switch CLI 2-1 Accessing the Switch CLI 2-2 Accessing the CLI through the Console...
... xxvii Documentation Feedback xxviii Obtaining Technical Assistance xxviii Cisco.com xxviii Technical Assistance Center xxviii Cisco TAC Web Site xxix Cisco TAC Escalation Center xxix Getting Started Product Overview 1-1 Catalyst 4000 Family Switches 1-1 Catalyst 2948G Switch 1-2 Catalyst 2980G Switch 1-2 Supervisor Engine Software 1-3 Using the Command-Line Interface 2-1 Overview of the Switch CLI 2-1 Accessing the Switch CLI 2-2 Accessing the CLI through the Console...
Software Guide
Page 4
... Ethernet Switching 4 C H A P T E R Configuring Ethernet and Fast Ethernet Switching 4-1 Understanding How Ethernet Works 4-1 Ethernet Overview 4-1 Switching Frames Between Segments 4-2 Building the Address Table 4-2 Default Ethernet and Fast Ethernet Configuration 4-2 Configuring Ethernet and Fast Ethernet Ports 4-3 Setting the Port Name 4-3 Setting the Port Priority Level 4-4 Setting the Port Speed 4-4 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G...
... Ethernet Switching 4 C H A P T E R Configuring Ethernet and Fast Ethernet Switching 4-1 Understanding How Ethernet Works 4-1 Ethernet Overview 4-1 Switching Frames Between Segments 4-2 Building the Address Table 4-2 Default Ethernet and Fast Ethernet Configuration 4-2 Configuring Ethernet and Fast Ethernet Ports 4-3 Setting the Port Name 4-3 Setting the Port Priority Level 4-4 Setting the Port Speed 4-4 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G...
Software Guide
Page 5
... A P T E R 78-12647-02 Setting the Port Duplex Mode 4-5 Configuring a Timeout Period for Ports in errdisable State 4-6 Checking Connectivity 4-7 Configuring Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Flow-Control Overview 5-1 Sending and Receiving Pause Frames 5-2 Using Flow-Control Keywords 5-2... VLAN Cost 6-7 Removing an EtherChannel Bundle 6-8 Displaying EtherChannel Configuration Information 6-9 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 v
... A P T E R 78-12647-02 Setting the Port Duplex Mode 4-5 Configuring a Timeout Period for Ports in errdisable State 4-6 Checking Connectivity 4-7 Configuring Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Flow-Control Overview 5-1 Sending and Receiving Pause Frames 5-2 Using Flow-Control Keywords 5-2... VLAN Cost 6-7 Removing an EtherChannel Bundle 6-8 Displaying EtherChannel Configuration Information 6-9 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 v
Software Guide
Page 6
...3 P A R T Spanning Tree 7 C H A P T E R Configuring Spanning Tree 7-1 How Spanning Tree Protocols Work 7-1 How a Topology Is Created 7-2 How a Switch or Port Becomes the Root Switch or Root Port 7-3 How Bridge Protocol Data Units Work 7-3 Spanning Tree Port States 7-4 Blocking State 7-5 Listening State 7-7 Learning State 7-8 Forwarding State 7-9 Disabled State... MISTP 7-18 Default MISTP Configuration 7-19 Enabling MISTP-PVST+ or MISTP 7-19 Configuring a MISTP Instance 7-21 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 vi 78-12647-02
...3 P A R T Spanning Tree 7 C H A P T E R Configuring Spanning Tree 7-1 How Spanning Tree Protocols Work 7-1 How a Topology Is Created 7-2 How a Switch or Port Becomes the Root Switch or Root Port 7-3 How Bridge Protocol Data Units Work 7-3 Spanning Tree Port States 7-4 Blocking State 7-5 Listening State 7-7 Learning State 7-8 Forwarding State 7-9 Disabled State... MISTP 7-18 Default MISTP Configuration 7-19 Enabling MISTP-PVST+ or MISTP 7-19 Configuring a MISTP Instance 7-21 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 vi 78-12647-02
Software Guide
Page 7
... MISTP Instance 7-26 Disabling MISTP-PVST+ or MISTP 7-26 Configuring a Root Switch 7-27 Configuring a Primary Root Switch 7-27 Configuring a Secondary Root Switch 7-28 Configuring a Root Switch to Improve Convergence 7-29 Using Root Guard-Preventing Switches from Becoming Root 7-30 Configuring Spanning Tree Timers 7-30 Configuring Hello Time 7-...PortFast BPDU Filtering 8-6 Disabling PortFast BPDU Filtering 8-7 Understanding How UplinkFast Works 8-8 Configuring UplinkFast 8-9 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 vii
... MISTP Instance 7-26 Disabling MISTP-PVST+ or MISTP 7-26 Configuring a Root Switch 7-27 Configuring a Primary Root Switch 7-27 Configuring a Secondary Root Switch 7-28 Configuring a Root Switch to Improve Convergence 7-29 Using Root Guard-Preventing Switches from Becoming Root 7-30 Configuring Spanning Tree Timers 7-30 Configuring Hello Time 7-...PortFast BPDU Filtering 8-6 Disabling PortFast BPDU Filtering 8-7 Understanding How UplinkFast Works 8-8 Configuring UplinkFast 8-9 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 vii
Software Guide
Page 8
... VTP 9-10 10 C H A P T E R Configuring VLANs 10-1 Understanding How VLANs Work 10-1 VLAN Default Configuration 10-3 VLAN Configuration Guidelines 10-3 Configuring VLANs 10-3 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 viii 78-12647-02
... VTP 9-10 10 C H A P T E R Configuring VLANs 10-1 Understanding How VLANs Work 10-1 VLAN Default Configuration 10-3 VLAN Configuration Guidelines 10-3 Configuring VLANs 10-3 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 viii 78-12647-02
Software Guide
Page 9
11 C H A P T E R 12 C H A P T E R Creating or Modifying an Ethernet VLAN 10-4 Assigning Switch Ports to a VLAN 10-4 Mapping 802.1Q VLANs to ISL VLANs 10-5 Clearing 802.1Q-to-ISL VLAN Mappings 10-6 Deleting a VLAN 10-7 Configuring Private ... Requirements 12-2 Default VMPS and Dynamic Port Configuration 12-2 Dynamic Port VLAN Membership and VMPS Configuration Guidelines 12-3 Contents 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 ix
11 C H A P T E R 12 C H A P T E R Creating or Modifying an Ethernet VLAN 10-4 Assigning Switch Ports to a VLAN 10-4 Mapping 802.1Q VLANs to ISL VLANs 10-5 Clearing 802.1Q-to-ISL VLAN Mappings 10-6 Deleting a VLAN 10-7 Configuring Private ... Requirements 12-2 Default VMPS and Dynamic Port Configuration 12-2 Dynamic Port VLAN Membership and VMPS Configuration Guidelines 12-3 Contents 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 ix
Software Guide
Page 10
... 13-6 Displaying GVRP Statistics 13-7 Clearing GVRP Statistics 13-8 Disabling GVRP on Individual 802.1Q Trunk Ports 13-8 Disabling GVRP Globally 13-8 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 x 78-12647-02
... 13-6 Displaying GVRP Statistics 13-7 Clearing GVRP Statistics 13-8 Disabling GVRP on Individual 802.1Q Trunk Ports 13-8 Disabling GVRP Globally 13-8 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 x 78-12647-02
Software Guide
Page 11
...14-3 Software Requirements 14-4 QoS Default Configuration 14-4 Configuring QoS 14-4 Enabling QoS Globally 14-5 Configuring the Default CoS Value for the Switch 14-5 Reverting to the Default Switch CoS Value 14-5 Mapping CoS Values to Transmit Queues and Drop Thresholds 14-6 Reverting to the Default CoS-to-Transmit Queue and Drop...Statistics 15-7 Disabling CGMP Fast-Leave Processing 15-8 Disabling CGMP 15-8 Configuring GMRP 15-8 GMRP Software Requirements 15-9 Default GMRP Configuration 15-9 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xi
...14-3 Software Requirements 14-4 QoS Default Configuration 14-4 Configuring QoS 14-4 Enabling QoS Globally 14-5 Configuring the Default CoS Value for the Switch 14-5 Reverting to the Default Switch CoS Value 14-5 Mapping CoS Values to Transmit Queues and Drop Thresholds 14-6 Reverting to the Default CoS-to-Transmit Queue and Drop...Statistics 15-7 Disabling CGMP Fast-Leave Processing 15-8 Disabling CGMP 15-8 Configuring GMRP 15-8 GMRP Software Requirements 15-9 Default GMRP Configuration 15-9 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xi
Software Guide
Page 12
... Forbidden Registration Mode 15-13 Setting the GARP Timers 15-13 Displaying GMRP Statistics 15-14 Clearing GMRP Statistics 15-15 Disabling GMRP on the Switch 15-15 Configuring Multicast Router Ports and Group Entries 15-16 Specifying Multicast Router Ports 15-16 Configuring Multicast Groups 15-16 Clearing Multicast Router... List 17-1 Understanding How the IP Permit List Works 17-1 IP Permit List Default Configuration 17-2 Configuring the IP Permit List 17-2 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xii 78-12647-02
... Forbidden Registration Mode 15-13 Setting the GARP Timers 15-13 Displaying GMRP Statistics 15-14 Clearing GMRP Statistics 15-15 Disabling GMRP on the Switch 15-15 Configuring Multicast Router Ports and Group Entries 15-16 Specifying Multicast Router Ports 15-16 Configuring Multicast Groups 15-16 Clearing Multicast Router... List 17-1 Understanding How the IP Permit List Works 17-1 IP Permit List Default Configuration 17-2 Configuring the IP Permit List 17-2 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xii 78-12647-02
Software Guide
Page 13
...Filtering Works 18-1 Default Protocol Filtering Configuration 18-2 Configuring Protocol Filtering 18-2 Configuring Protocol Filtering 18-3 Disabling Protocol Filtering 18-3 Monitoring and Managing the Switch Checking Port Status and Connectivity 19-1 Checking Module Status 19-1 Checking Port Status 19-2 Checking Port Capabilities 19-4 Using Telnet 19-5 Changing the ...-12 Configuring CDP 20-1 Understanding How CDP Works 20-1 Default CDP Configuration 20-1 Configuring CDP 20-2 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xiii
...Filtering Works 18-1 Default Protocol Filtering Configuration 18-2 Configuring Protocol Filtering 18-2 Configuring Protocol Filtering 18-3 Disabling Protocol Filtering 18-3 Monitoring and Managing the Switch Checking Port Status and Connectivity 19-1 Checking Module Status 19-1 Checking Port Status 19-2 Checking Port Capabilities 19-4 Using Telnet 19-5 Changing the ...-12 Configuring CDP 20-1 Understanding How CDP Works 20-1 Default CDP Configuration 20-1 Configuring CDP 20-2 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xiii
Software Guide
Page 14
... CDP Neighbor Information 20-4 21 C H A P T E R Using Switch TopN Reports 21-1 Understanding How Switch TopN Reports Works 21-1 Overview of Switch TopN Reports 21-1 Running Switch TopN Reports without the Background Option 21-2 Running Switch TopN Reports with the Background Option 21-2 Running and Viewing Switch TopN Reports 21-3 22 C H A P T E R Configuring UDLD...-5 Configuring SNMPv1 and SNMPv2c from the CLI 23-6 Understanding SNMPv3 23-7 Benefits 23-7 SNMP Entity 23-7 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xiv 78-12647-02
... CDP Neighbor Information 20-4 21 C H A P T E R Using Switch TopN Reports 21-1 Understanding How Switch TopN Reports Works 21-1 Overview of Switch TopN Reports 21-1 Running Switch TopN Reports without the Background Option 21-2 Running Switch TopN Reports with the Background Option 21-2 Running and Viewing Switch TopN Reports 21-3 22 C H A P T E R Configuring UDLD...-5 Configuring SNMPv1 and SNMPv2c from the CLI 23-6 Understanding SNMPv3 23-7 Benefits 23-7 SNMP Entity 23-7 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xiv 78-12647-02
Software Guide
Page 15
... How RSPAN Work 25-8 RSPAN Configuration Guidelines 25-9 Configuring RSPAN 25-10 Disabling RSPAN Sessions 25-13 RSPAN Configuration Examples 25-14 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xv
... How RSPAN Work 25-8 RSPAN Configuration Guidelines 25-9 Configuring RSPAN 25-10 Disabling RSPAN Sessions 25-13 RSPAN Configuration Examples 25-14 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xv
Software Guide
Page 16
... RSPAN Session 25-14 Modifying an Active RSPAN Session 25-14 Adding RSPAN Source Ports in Intermediate Switches 25-15 Administering the Switch Administering the Switch 26-1 Setting the System Name and System Prompt 26-1 Configuring a Static System Name and Prompt 26...Switch Access Using AAA 27-1 Understanding How Authentication Works 27-1 Authentication Overview 27-2 Understanding How Login Authentication Works 27-2 Understanding How Local Authentication Works 27-2 Understanding How TACACS+ Authentication Works 27-3 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst...
... RSPAN Session 25-14 Modifying an Active RSPAN Session 25-14 Adding RSPAN Source Ports in Intermediate Switches 25-15 Administering the Switch Administering the Switch 26-1 Setting the System Name and System Prompt 26-1 Configuring a Static System Name and Prompt 26...Switch Access Using AAA 27-1 Understanding How Authentication Works 27-1 Authentication Overview 27-2 Understanding How Login Authentication Works 27-2 Understanding How Local Authentication Works 27-2 Understanding How TACACS+ Authentication Works 27-3 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst...
Software Guide
Page 17
...-Kerberized Login Procedure 27-6 Understanding How 802.1x Authentication Works 27-7 Traffic Control 27-9 Authentication Server 27-9 802.1x Parameters Configurable on the Switch 27-9 Configuring Authentication 27-9 Authentication Default Configuration 27-10 Authentication Configuration Guidelines 27-11 Configuring Login Authentication 27-12 Setting Authentication Login Attempts on ...Setting the RADIUS Retransmit Count 27-26 Setting the RADIUS Dead Time 27-27 Clearing RADIUS Servers 27-28 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xvii
...-Kerberized Login Procedure 27-6 Understanding How 802.1x Authentication Works 27-7 Traffic Control 27-9 Authentication Server 27-9 802.1x Parameters Configurable on the Switch 27-9 Configuring Authentication 27-9 Authentication Default Configuration 27-10 Authentication Configuration Guidelines 27-11 Configuring Login Authentication 27-12 Setting Authentication Login Attempts on ...Setting the RADIUS Retransmit Count 27-26 Setting the RADIUS Dead Time 27-27 Clearing RADIUS Servers 27-28 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xvii
Software Guide
Page 18
... Authorization Events 27-49 TACACS+ Primary Options and Fallback Options 27-49 TACACS+ Command Authorization 27-50 RADIUS Authorization 27-50 xviii Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 78-12647-02
... Authorization Events 27-49 TACACS+ Primary Options and Fallback Options 27-49 TACACS+ Command Authorization 27-50 RADIUS Authorization 27-50 xviii Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 78-12647-02
Software Guide
Page 19
... 27-59 Enabling Accounting 27-59 Disabling Accounting 27-61 Accounting Example 27-62 Modifying the Switch Boot Configuration 28-1 Understanding How the Switch Boot Configuration Works 28-1 Understanding the Boot Process 28-1 Understanding the ROM Monitor 28-2 Understanding...28-5 Setting the Switch to Ignore the NVRAM Configuration 28-6 Setting the BOOT Environment Variable 28-7 Setting the BOOT Environment Variable 28-7 Clearing the BOOT Environment Variable Settings 28-7 Contents 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3...
... 27-59 Enabling Accounting 27-59 Disabling Accounting 27-61 Accounting Example 27-62 Modifying the Switch Boot Configuration 28-1 Understanding How the Switch Boot Configuration Works 28-1 Understanding the Boot Process 28-1 Understanding the ROM Monitor 28-2 Understanding...28-5 Setting the Switch to Ignore the NVRAM Configuration 28-6 Setting the BOOT Environment Variable 28-7 Setting the BOOT Environment Variable 28-7 Clearing the BOOT Environment Variable Settings 28-7 Contents 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3...
Software Guide
Page 20
... a TFTP Server 29-5 Preparing to Upload an Image to a TFTP Server 29-5 Uploading Software Images to a TFTP Server 29-5 Downloading System Software Images to the Switch Using rcp 29-6 Understanding How rcp Software Image Downloads Work 29-6 Preparing to Download an Image Using rcp 29-6 Downloading Supervisor Engine Images Using rcp... the Contents of a File on a Flash Device 30-4 Copying Files 30-4 Deleting Files 30-6 Restoring Deleted Files 30-7 Verifying a File Checksum 30-7 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xx 78-12647-02
... a TFTP Server 29-5 Preparing to Upload an Image to a TFTP Server 29-5 Uploading Software Images to a TFTP Server 29-5 Downloading System Software Images to the Switch Using rcp 29-6 Understanding How rcp Software Image Downloads Work 29-6 Preparing to Download an Image Using rcp 29-6 Downloading Supervisor Engine Images Using rcp... the Contents of a File on a Flash Device 30-4 Copying Files 30-4 Deleting Files 30-6 Restoring Deleted Files 30-7 Verifying a File Checksum 30-7 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 xx 78-12647-02