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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 ... 6-9 Removing an EtherChannel Bundle 6-9 Displaying EtherChannel Configuration Information 6-10 Displaying EtherChannel Traffic Statistics 6-11 Displaying EtherChannel PAgP Statistics 6-12 EtherChannel Configuration Examples 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 v
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 ... 6-9 Removing an EtherChannel Bundle 6-9 Displaying EtherChannel Configuration Information 6-10 Displaying EtherChannel Traffic Statistics 6-11 Displaying EtherChannel PAgP Statistics 6-12 EtherChannel Configuration Examples 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 v
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... Port Becomes the Root Switch or Root Port 7-3 Understanding BPDUs 7-4 Calculating and Assigning Port Costs 7-4 Understanding Spanning Tree Port States 7-5 Understanding How PVST+ and MISTP Modes Work 7-11 PVST+ Mode 7-12 Rapid PVST+ 7-12 MISTP Mode 7-12 MISTP-PVST+ Mode 7-13 Understanding How Bridge Identifiers Work 7-13 MAC Address Allocation 7-13 MAC Address Reduction...
... Port Becomes the Root Switch or Root Port 7-3 Understanding BPDUs 7-4 Calculating and Assigning Port Costs 7-4 Understanding Spanning Tree Port States 7-5 Understanding How PVST+ and MISTP Modes Work 7-11 PVST+ Mode 7-12 Rapid PVST+ 7-12 MISTP Mode 7-12 MISTP-PVST+ Mode 7-13 Understanding How Bridge Identifiers Work 7-13 MAC Address Allocation 7-13 MAC Address Reduction...
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... 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 8-14 Configuring UplinkFast 8-15 Enabling UplinkFast 8-15 Disabling UplinkFast... 1 and Version 2 Configuration Guidelines 9-6 Configuring VTP Version 1 and Version 2 9-6 Configuring a VTP Server 9-7 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 viii 78-15486-01
... 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 8-14 Configuring UplinkFast 8-15 Enabling UplinkFast 8-15 Disabling UplinkFast... 1 and Version 2 Configuration Guidelines 9-6 Configuring VTP Version 1 and Version 2 9-6 Configuring a VTP Server 9-7 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 viii 78-15486-01
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... How VLANs Work 10-1 VLAN Ranges 10-3 Configurable VLAN Parameters 10-4 VLAN Default Configuration 10-4 VLAN Configuration Guidelines 10-5 Configuring VLANs on the Switch 10-6 Creating or Modifying an Ethernet VLAN 10-6 Creating or Modifying a Normal-Range Ethernet VLAN 10-7 Creating or Modifying an Extended-Range VLAN ...10-9 Assigning Switch Ports to a VLAN 10-10 Mapping 802.1Q VLANs to ISL VLANs 10-11 Clearing 802.1Q-to-ISL VLAN Mappings 10-12 Deleting a VLAN 10-12 Configuring Auxiliary VLANs 10-13 Understanding Auxiliary VLANs 10-13 Catalyst...
... How VLANs Work 10-1 VLAN Ranges 10-3 Configurable VLAN Parameters 10-4 VLAN Default Configuration 10-4 VLAN Configuration Guidelines 10-5 Configuring VLANs on the Switch 10-6 Creating or Modifying an Ethernet VLAN 10-6 Creating or Modifying a Normal-Range Ethernet VLAN 10-7 Creating or Modifying an Extended-Range VLAN ...10-9 Assigning Switch Ports to a VLAN 10-10 Mapping 802.1Q VLANs to ISL VLANs 10-11 Clearing 802.1Q-to-ISL VLAN Mappings 10-12 Deleting a VLAN 10-12 Configuring Auxiliary VLANs 10-13 Understanding Auxiliary VLANs 10-13 Catalyst...
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... and Dynamic Port Configuration 12-3 Configuration Guidelines for Dynamic Ports and VMPS 12-3 Configuring VMPS 12-4 Creating the VMPS Database 12-4 Configuring the VMPS Server 12-7 Configuring VMPS Clients 12-8 Monitoring VMPS 12-9 Maintaining VMPS 12-9 Configuring Static Ports 12-10 Troubleshooting VMPS and Dynamic Port VLAN Membership 12-11 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
... and Dynamic Port Configuration 12-3 Configuration Guidelines for Dynamic Ports and VMPS 12-3 Configuring VMPS 12-4 Creating the VMPS Database 12-4 Configuring the VMPS Server 12-7 Configuring VMPS Clients 12-8 Monitoring VMPS 12-9 Maintaining VMPS 12-9 Configuring Static Ports 12-10 Troubleshooting VMPS and Dynamic Port VLAN Membership 12-11 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
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...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... 14-4 QoS Default Configuration 14-4 Configuring QoS on the Switch 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...
...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... 14-4 QoS Default Configuration 14-4 Configuring QoS on the Switch 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...
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...Configuring GMRP 15-9 GMRP Software Requirements 15-9 Default GMRP Configuration 15-9 Enabling GMRP Globally 15-9 Enabling GMRP on Individual Switch Ports 15-10 Disabling GMRP on Individual Switch Ports 15-10 Enabling GMRP Forward-All Option 15-11 Disabling GMRP Forward-All Option 15-11 Configuring GMRP Registration 15...-12 Setting the GARP Timers 15-13 Displaying GMRP Statistics 15-14 Clearing GMRP Statistics 15-15 Disabling GMRP ...
...Configuring GMRP 15-9 GMRP Software Requirements 15-9 Default GMRP Configuration 15-9 Enabling GMRP Globally 15-9 Enabling GMRP on Individual Switch Ports 15-10 Disabling GMRP on Individual Switch Ports 15-10 Enabling GMRP Forward-All Option 15-11 Disabling GMRP Forward-All Option 15-11 Configuring GMRP Registration 15...-12 Setting the GARP Timers 15-13 Displaying GMRP Statistics 15-14 Clearing GMRP Statistics 15-15 Disabling GMRP ...
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... 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 ... 2 Path 20-11 Using IP Traceroute 20-12 Understanding How IP Traceroute Works 20-12 Executing IP Traceroute 20-12 Configuring CDP 21-1 Understanding How CDP Works 21-1 Default CDP Configuration 21-2 Configuring CDP on the Switch 21-2 Setting the CDP Global Enable State 21...
... 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 ... 2 Path 20-11 Using IP Traceroute 20-12 Understanding How IP Traceroute Works 20-12 Executing IP Traceroute 20-12 Configuring CDP 21-1 Understanding How CDP Works 21-1 Default CDP Configuration 21-2 Configuring CDP on the Switch 21-2 Setting the CDP Global Enable State 21...
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...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... a Reset Within a Specified Amount of Time 27-11 Generating System Status Reports for Tech Support 27-12 Power Management 28-1 Understanding How Power Management Works on the Catalyst 4500 Series Switches 28-1 Power Management Overview 28-2 Understanding Power Management Modes 28-2 Available Power for Power Supplies 28-4 ...
...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... a Reset Within a Specified Amount of Time 27-11 Generating System Status Reports for Tech Support 27-12 Power Management 28-1 Understanding How Power Management Works on the Catalyst 4500 Series Switches 28-1 Power Management Overview 28-2 Understanding Power Management Modes 28-2 Available Power for Power Supplies 28-4 ...
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...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 ...30-8 Authentication Default Configuration 30-8 Authentication Configuration Guidelines 30-9 Configuring Login Authentication 30-9 Configuring Local Authentication 30-12 Configuring Local User Authentication 30-15 Configuring TACACS+ Authentication 30-17 Configuring RADIUS Authentication 30-23 Configuring Kerberos ...
...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 ...30-8 Authentication Default Configuration 30-8 Authentication Configuration Guidelines 30-9 Configuring Login Authentication 30-9 Configuring Local Authentication 30-12 Configuring Local User Authentication 30-15 Configuring TACACS+ Authentication 30-17 Configuring RADIUS Authentication 30-23 Configuring Kerberos ...
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... and Message Exchange 31-3 Ports in Authorized and Unauthorized States 31-4 Authentication Server 31-5 802.1x Parameters Configurable on the Switch 31-6 802.1x VLAN Assignment Using a RADIUS Server 31-6 Authentication Default Configuration 31-7 Authentication Configuration Guidelines 31-8 Configuring 802.1x Authentication...31-11 Setting the Authenticator-to-Host Retransmission Time for EAP-Request/Identity Frames 31-12 Setting the Supplicant-to-Host Retransmission Time for EAP-Request Frames 31-12 Setting the Back-End Authenticator-to-Authentication-Server Retransmission Time for Transport Layer Packets 31...
... and Message Exchange 31-3 Ports in Authorized and Unauthorized States 31-4 Authentication Server 31-5 802.1x Parameters Configurable on the Switch 31-6 802.1x VLAN Assignment Using a RADIUS Server 31-6 Authentication Default Configuration 31-7 Authentication Configuration Guidelines 31-8 Configuring 802.1x Authentication...31-11 Setting the Authenticator-to-Host Retransmission Time for EAP-Request/Identity Frames 31-12 Setting the Supplicant-to-Host Retransmission Time for EAP-Request Frames 31-12 Setting the Back-End Authenticator-to-Authentication-Server Retransmission Time for Transport Layer Packets 31...
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... Trunks on Fast Ethernet and Gigabit Ethernet Ports Describes how to configure Inter-Switch Link (ISL) and IEEE 802.1Q VLAN trunks on the switch. Configuring Multicast Services Describes how to configure Cisco Group Management Protocol (CGMP), Internet Group Management Protocol (IGMP) snooping, and...Ethernet, Fast Ethernet, and Gigabit Ethernet ports. Configuring CDP Describes how to configure Cisco Discovery Protocol (CDP) on the switch. Organization Preface Chapter Chapter 9 Chapter 10 Chapter 11 Chapter 12 Chapter 13 Chapter 14 Chapter 15 Chapter 16 Chapter 17 Chapter 18 Chapter 19 ...
... Trunks on Fast Ethernet and Gigabit Ethernet Ports Describes how to configure Inter-Switch Link (ISL) and IEEE 802.1Q VLAN trunks on the switch. Configuring Multicast Services Describes how to configure Cisco Group Management Protocol (CGMP), Internet Group Management Protocol (IGMP) snooping, and...Ethernet, Fast Ethernet, and Gigabit Ethernet ports. Configuring CDP Describes how to configure Cisco Discovery Protocol (CDP) on the switch. Organization Preface Chapter Chapter 9 Chapter 10 Chapter 11 Chapter 12 Chapter 13 Chapter 14 Chapter 15 Chapter 16 Chapter 17 Chapter 18 Chapter 19 ...
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...-01 Table 1-2 describes the Catalyst 2948G switch. Catalyst 2948G Switch Chapter 1 Product Overview Table 1-1 Catalyst 4000 Series and Catalyst 4500 Series Switches (continued) Product Number WS-C4912G Catalyst 4500 Series WS-C4503 WS-C4506 Chassis Description Catalyst 4912G • Fixed-configuration switch • 12-Gbps backplane • Optional redundant power supplies • 12 1000BASE-X (GBIC) Gigabit Ethernet ports Catalyst...
...-01 Table 1-2 describes the Catalyst 2948G switch. Catalyst 2948G Switch Chapter 1 Product Overview Table 1-1 Catalyst 4000 Series and Catalyst 4500 Series Switches (continued) Product Number WS-C4912G Catalyst 4500 Series WS-C4503 WS-C4506 Chassis Description Catalyst 4912G • Fixed-configuration switch • 12-Gbps backplane • Optional redundant power supplies • 12 1000BASE-X (GBIC) Gigabit Ethernet ports Catalyst...
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... and a complete description of the available CLI commands, refer to the Catalyst 2948G and 2980G Installation Guide. Table 1-3 Catalyst 2980G Switch Product Number WS-C2980G-A Chassis Description Catalyst 2980G • Fixed-configuration switch • 12-Gbps backplane • Optional redundant power supplies • Two 1000BASE-X (GBIC) Gigabit Ethernet ports • 80 10/100BASE-TX...
... and a complete description of the available CLI commands, refer to the Catalyst 2948G and 2980G Installation Guide. Table 1-3 Catalyst 2980G Switch Product Number WS-C2980G-A Chassis Description Catalyst 2980G • Fixed-configuration switch • 12-Gbps backplane • Optional redundant power supplies • Two 1000BASE-X (GBIC) Gigabit Ethernet ports • 80 10/100BASE-TX...
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...-VLAN mapping. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 12-1 When you move a host from a port on one switch in the network to a port on another switch in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and...describes how to configure dynamic VLAN membership for that host dynamically. 12 C H A P T E R Configuring Dynamic VLAN Membership with Auxiliary VLANs, page 12-14 Understanding How VMPS Works With VMPS, you can dynamically assign switch ports to VLANs based on the source MAC address of the device...
...-VLAN mapping. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 12-1 When you move a host from a port on one switch in the network to a port on another switch in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and...describes how to configure dynamic VLAN membership for that host dynamically. 12 C H A P T E R Configuring Dynamic VLAN Membership with Auxiliary VLANs, page 12-14 Understanding How VMPS Works With VMPS, you can dynamically assign switch ports to VLANs based on the source MAC address of the device...
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... Dynamic VLAN Membership with IP address 172.20.22.7. 12-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 In this example, the following assumptions apply: • The VMPS server and the VMPS client are separate switches. • Switch 1 is stored on a TFTP server with VMPS When you...
... Dynamic VLAN Membership with IP address 172.20.22.7. 12-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 In this example, the following assumptions apply: • The VMPS server and the VMPS client are separate switches. • Switch 1 is stored on a TFTP server with VMPS When you...
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... set port auxiliaryvlan 5/9 untagged Port 2/48 allows the connected device send and receive untagged packets and without 802.1p priority. The switch port configured for connecting an IP phone can belong to configure the VMPS server with Auxiliary VLANs This example shows how to add voice...VLAN ID cannot be the same as the native VLAN ID: 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 12-15 Console> (enable) This example shows that the auxiliary VLAN ID that is specified cannot be queried for information on ...
... set port auxiliaryvlan 5/9 untagged Port 2/48 allows the connected device send and receive untagged packets and without 802.1p priority. The switch port configured for connecting an IP phone can belong to configure the VMPS server with Auxiliary VLANs This example shows how to add voice...VLAN ID cannot be the same as the native VLAN ID: 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 12-15 Console> (enable) This example shows that the auxiliary VLAN ID that is specified cannot be queried for information on ...
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... DNS Table 38-1 Default DNS Configuration (continued) Feature DNS default domain name DNS servers Default Value Null None specified Configuring DNS on the Switch The following sections describe how to configure DNS: • Setting Up and Enabling DNS, page 38-2 • Clearing a DNS Server,... of one or more DNS servers. Console> (enable) set ip dns server 10.12.12.24 10.12.12.24 added to DNS server table as primary server. primary 38-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Set the domain name.
... DNS Table 38-1 Default DNS Configuration (continued) Feature DNS default domain name DNS servers Default Value Null None specified Configuring DNS on the Switch The following sections describe how to configure DNS: • Setting Up and Enabling DNS, page 38-2 • Clearing a DNS Server,... of one or more DNS servers. Console> (enable) set ip dns server 10.12.12.24 10.12.12.24 added to DNS server table as primary server. primary 38-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Set the domain name.
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... ip dns [noalias] This example shows how to clear a DNS server from the DNS server table: Console> (enable) clear ip dns server 10.12.12.24 10.12.12.24 cleared from DNS table Console> (enable) This example shows how to clear the default DNS domain name: Console> (enable) clear ip dns domain... Default DNS domain name cleared. Command clear ip dns domain show ip dns [noalias] This example shows how to disable DNS on the switch. Command...
... ip dns [noalias] This example shows how to clear a DNS server from the DNS server table: Console> (enable) clear ip dns server 10.12.12.24 10.12.12.24 cleared from DNS table Console> (enable) This example shows how to clear the default DNS domain name: Console> (enable) clear ip dns domain... Default DNS domain name cleared. Command clear ip dns domain show ip dns [noalias] This example shows how to disable DNS on the switch. Command...
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...-3 VTP "off" mode, configuring 9-9 advertisements 9-3 caution 9-6 client, configuring 9-7 configuration guidelines 9-6 configuring client 9-7 server 9-7 default configuration 9-5 disabling 9-8, 9-9 domains 9-2 modes client 9-2 off 9-3 server 9-2 transparent 9-3 monitoring 9-12 overview 9-1 pruning configuring 9-11 disabling 9-12 figure 9-4 overview 9-4 server, configuring 9-7 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 IN-19 native VLANs;
...-3 VTP "off" mode, configuring 9-9 advertisements 9-3 caution 9-6 client, configuring 9-7 configuration guidelines 9-6 configuring client 9-7 server 9-7 default configuration 9-5 disabling 9-8, 9-9 domains 9-2 modes client 9-2 off 9-3 server 9-2 transparent 9-3 monitoring 9-12 overview 9-1 pruning configuring 9-11 disabling 9-12 figure 9-4 overview 9-4 server, configuring 9-7 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 IN-19 native VLANs;