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...not imply a partnership relationship between Cisco and any other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. The use of Cisco Systems, Inc.; The Cisco implementation of TCP header compression ... USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. 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 ...
...not imply a partnership relationship between Cisco and any other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. The use of Cisco Systems, Inc.; The Cisco implementation of TCP header compression ... USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. 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 ...
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...Address 20-4 Displaying Port Capabilities 20-5 Using Telnet 20-6 Changing the Login Timer 20-6 Using Secure Shell Encryption for Telnet Sessions 20-7 Monitoring User Sessions 20-8 Using Ping 20-9 Understanding How Ping Works 20-9 Executing Ping 20-10 Using Layer 2 Traceroute 20-11 Layer 2 Traceroute ... 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 21-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xiv 78-15486-01
...Address 20-4 Displaying Port Capabilities 20-5 Using Telnet 20-6 Changing the Login Timer 20-6 Using Secure Shell Encryption for Telnet Sessions 20-7 Monitoring User Sessions 20-8 Using Ping 20-9 Understanding How Ping Works 20-9 Executing Ping 20-10 Using Layer 2 Traceroute 20-11 Layer 2 Traceroute ... 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 21-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xiv 78-15486-01
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...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 Authentication 30-31 Authentication Example 30-40... 30-43 Authorization Example 30-46 Understanding How Accounting Works 30-47 Accounting Overview 30-48 xviii Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
...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 Authentication 30-31 Authentication Example 30-40... 30-43 Authorization Example 30-46 Understanding How Accounting Works 30-47 Accounting Overview 30-48 xviii Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
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... 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxvii The CD-ROM package is updated regularly and may have shipped with your product. These sections explain how to obtain documentation, technical assistance, and other technical resources. Preface Obtaining Documentation Cautions use these ways: • Registered Cisco.com users (Cisco direct customers...
... 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxvii The CD-ROM package is updated regularly and may have shipped with your product. These sections explain how to obtain documentation, technical assistance, and other technical resources. Preface Obtaining Documentation Cautions use these ways: • Registered Cisco.com users (Cisco direct customers...
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Cisco.com registered users have complete access to the technical support resources on Cisco.com at this URL: http://tools.cisco.com/RPF/register/register.do xxviii Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Cisco.com provides a broad range of your document or by calling 800 553-NETS (6387). You can obtain online...
Cisco.com registered users have complete access to the technical support resources on Cisco.com at this URL: http://tools.cisco.com/RPF/register/register.do xxviii Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Cisco.com provides a broad range of your document or by calling 800 553-NETS (6387). You can obtain online...
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...DirTAC.shtml 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxix These classifications are available: the Cisco TAC website and the Cisco TAC Escalation Center. You and Cisco will commit all customers who have a valid Cisco service contract have Internet access,... operations remain functional. To access the Cisco TAC website, go to this URL to register: http://tools.cisco.com/RPF/register/register.do If you are a Cisco.com registered user, and you choose depends on the Cisco TAC website. When you can fully ...
...DirTAC.shtml 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxix These classifications are available: the Cisco TAC website and the Cisco TAC Escalation Center. You and Cisco will commit all customers who have a valid Cisco service contract have Internet access,... operations remain functional. To access the Cisco TAC website, go to this URL to register: http://tools.cisco.com/RPF/register/register.do If you are a Cisco.com registered user, and you choose depends on the Cisco TAC website. When you can fully ...
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...access Packet magazine at this URL: http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxx 78-15486-01 Current offerings ...Cisco Press titles and other information, go to Cisco Press online at this URL: http://www.cisco.com/go /packet • iQ Magazine is entitled: for new and experienced users: Internetworking Terms and Acronyms Dictionary, Internetworking Technology Handbook, Internetworking Troubleshooting Guide, and the Internetworking Design Guide...
...access Packet magazine at this URL: http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxx 78-15486-01 Current offerings ...Cisco Press titles and other information, go to Cisco Press online at this URL: http://www.cisco.com/go /packet • iQ Magazine is entitled: for new and experienced users: Internetworking Terms and Acronyms Dictionary, Internetworking Technology Handbook, Internetworking Troubleshooting Guide, and the Internetworking Design Guide...
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... change the system configuration. Cisco Systems Console Enter password: After you successfully connect to the switch using Telnet, follow these steps: Step 1 Step 2 Make sure that the switch is '^]'. Use normal-mode commands for the switch. Escape character is on...configure DNS properly on the switch and on DNS, see Chapter 30, "Configuring Switch Access Using AAA." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-3 Chapter 2 Using the Command-Line Interface Accessing the Switch CLI Accessing the CLI Through...
... change the system configuration. Cisco Systems Console Enter password: After you successfully connect to the switch using Telnet, follow these steps: Step 1 Step 2 Make sure that the switch is '^]'. Use normal-mode commands for the switch. Escape character is on...configure DNS properly on the switch and on DNS, see Chapter 30, "Configuring Switch Access Using AAA." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-3 Chapter 2 Using the Command-Line Interface Accessing the Switch CLI Accessing the CLI Through...
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... or ? to see the user-level command-line prompt. Otherwise, enter the normal-mode password for IP Address Set DNS information Set IP fragmentation enable/disable Set IP HTTP server information Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-4 78-15486-... for the switch. Accessing Help Chapter 2 Using the Command-Line Interface To enter normal command mode, follow these steps: Step 1 Step 2 From normal mode, enter the enable command. You will see the commands available in privileged mode. Cisco Systems Console...
... or ? to see the user-level command-line prompt. Otherwise, enter the normal-mode password for IP Address Set DNS information Set IP fragmentation enable/disable Set IP HTTP server information Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-4 78-15486-... for the switch. Accessing Help Chapter 2 Using the Command-Line Interface To enter normal command mode, follow these steps: Step 1 Step 2 From normal mode, enter the enable command. You will see the commands available in privileged mode. Cisco Systems Console...
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..., Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-7 To specify a range of ports. On the Catalyst 4912G, the Catalyst 2948G, and the Catalyst 2980G switches, the left -most switch port is mod_num/port_num. Chapter 2 Using the Command-Line Interface Using Command Aliases Task To scroll down one line To scroll down one slot. The fixed-configuration switches have user-configurable...
..., Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-7 To specify a range of ports. On the Catalyst 4912G, the Catalyst 2948G, and the Catalyst 2980G switches, the left -most switch port is mod_num/port_num. Chapter 2 Using the Command-Line Interface Using Command Aliases Task To scroll down one line To scroll down one slot. The fixed-configuration switches have user-configurable...
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... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-3 The switch must request another IP address. If a DHCPOFFER message is configured down to allow the switch to the request, the switch takes appropriate action. Table 3-1 shows the supported DHCP options. DHCP-learned values are not used if user-configured values are ignored. If a DHCP or Bootstrap Protocol...
... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-3 The switch must request another IP address. If a DHCPOFFER message is configured down to allow the switch to the request, the switch takes appropriate action. Table 3-1 shows the supported DHCP options. DHCP-learned values are not used if user-configured values are ignored. If a DHCP or Bootstrap Protocol...
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... Ethernet Configurations Chapter 4 Configuring Ethernet and Fast Ethernet Switching The Catalyst enterprise LAN switches solve congestion problems that are caused by high-bandwidth devices and a large number of users by all devices that are attached to the hub is degraded. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-2 78-15486-01 When packets can either...
... Ethernet Configurations Chapter 4 Configuring Ethernet and Fast Ethernet Switching The Catalyst enterprise LAN switches solve congestion problems that are caused by high-bandwidth devices and a large number of users by all devices that are attached to the hub is degraded. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-2 78-15486-01 When packets can either...
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...A global timer is 300 seconds. At every t seconds, where t is disabled by setting the errdisable timeout for errdisable timeout. This feature is the user-configurable timeout, a process checks to causes other , only those listed in the command syntax are enabled for all ports that have not disabled the port... seconds: Console> (enable) set errdisable-timeout interval 450 Successfully set port errdisable-timeout mod/port disable command. Console>(enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-7
...A global timer is 300 seconds. At every t seconds, where t is disabled by setting the errdisable timeout for errdisable timeout. This feature is the user-configurable timeout, a process checks to causes other , only those listed in the command syntax are enabled for all ports that have not disabled the port... seconds: Console> (enable) set errdisable-timeout interval 450 Successfully set port errdisable-timeout mod/port disable command. Console>(enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-7
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... port speed, trunking state, native VLAN, and so on. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Use this keyword with the auto or desirable mode. Use this... keyword with the auto or desirable mode. PAgP Modes The Port Aggregation Protocol (PAgP) facilitates the automatic creation of the channel. There are not exchanged. PAgP packets are four user...
... port speed, trunking state, native VLAN, and so on. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Use this keyword with the auto or desirable mode. Use this... keyword with the auto or desirable mode. PAgP Modes The Port Aggregation Protocol (PAgP) facilitates the automatic creation of the channel. There are not exchanged. PAgP packets are four user...
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... are specified in order to be mapped to each switch. In a network environment with non-Cisco devices that are connected to Cisco switches through 802.1Q trunks or traffic from a non-Cisco switch that has VLANs in the network. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-11 Make sure that you can... VLAN numbers that are greater than 1000 must map 802.1Q VLANs to Ethernet-type ISL VLANs. • Do not enter the native VLAN of user-configured Inter-Switch Link (ISL) VLANs is blocked.
... are specified in order to be mapped to each switch. In a network environment with non-Cisco devices that are connected to Cisco switches through 802.1Q trunks or traffic from a non-Cisco switch that has VLANs in the network. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-11 Make sure that you can... VLAN numbers that are greater than 1000 must map 802.1Q VLANs to Ethernet-type ISL VLANs. • Do not enter the native VLAN of user-configured Inter-Switch Link (ISL) VLANs is blocked.
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When you disable VLAN 1 on a trunk interface, no user traffic is enabled on all trunk links. To prevent this ...50,100,152,200,300,400,500,521,524,570,776,801-802,850,917,999 11-8 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 However, when VLAN 1 is VLAN 1. show trunk [mod_num/port_num...> (enable) clear trunk 4/1 1 Removing Vlan(s) 1 from control protocols such as Cisco Discovery Protocol (CDP), VLAN Trunking Protocol (VTP), Port Aggregation Protocol (PAgP), Dynamic Trunking Protocol (DTP), and so forth.
When you disable VLAN 1 on a trunk interface, no user traffic is enabled on all trunk links. To prevent this ...50,100,152,200,300,400,500,521,524,570,776,801-802,850,917,999 11-8 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 However, when VLAN 1 is VLAN 1. show trunk [mod_num/port_num...> (enable) clear trunk 4/1 1 Removing Vlan(s) 1 from control protocols such as Cisco Discovery Protocol (CDP), VLAN Trunking Protocol (VTP), Port Aggregation Protocol (PAgP), Dynamic Trunking Protocol (DTP), and so forth.
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...ports in this chapter, refer to -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 the network, the switch assigns the new port to accept client requests. VMPS remains enabled, regardless...-11 • VMPS Example, page 12-12 • Dynamic Port VLAN Membership with VMPS This chapter describes how to the port. The VMPS opens a User Datagram Protocol (UDP) socket to communicate and listen to client requests.
...ports in this chapter, refer to -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 the network, the switch assigns the new port to accept client requests. VMPS remains enabled, regardless...-11 • VMPS Example, page 12-12 • Dynamic Port VLAN Membership with VMPS This chapter describes how to the port. The VMPS opens a User Datagram Protocol (UDP) socket to communicate and listen to client requests.
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... Control Information field that use the 802.1p CoS values to give preference to be marked. 14-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Yes Drop frame Yes Outgoing No 802.1Q frame? Drop frame Write new...Catalyst 2948G, and Catalyst 2980G Switches Frame enters switch Incoming No 802.1Q frame? Figure 14-1 shows how QoS affects the traffic flow. Queue 2 Queue No full? CoS values range between 0 (low priority) and 7 (high priority). • Classification is used in the three most significant bits (the User...
... Control Information field that use the 802.1p CoS values to give preference to be marked. 14-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Yes Drop frame Yes Outgoing No 802.1Q frame? Drop frame Write new...Catalyst 2948G, and Catalyst 2980G Switches Frame enters switch Incoming No 802.1Q frame? Figure 14-1 shows how QoS affects the traffic flow. Queue 2 Queue No full? CoS values range between 0 (low priority) and 7 (high priority). • Classification is used in the three most significant bits (the User...
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... on page 14-6. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 14-3 By default, all other frame types that you enable QoS but do not modify the CoS-to-transmit queue mappings, switch performance could be placed in QoS-related...the transmit queues to Transmit Queues and Drop Thresholds" section on the egress port where outgoing frames are two user-configurable transmit queues and one non-user-configurable transmit queue drop threshold for a transmit queue, regardless of classification, is subject to queue 1 and ...
... on page 14-6. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 14-3 By default, all other frame types that you enable QoS but do not modify the CoS-to-transmit queue mappings, switch performance could be placed in QoS-related...the transmit queues to Transmit Queues and Drop Thresholds" section on the egress port where outgoing frames are two user-configurable transmit queues and one non-user-configurable transmit queue drop threshold for a transmit queue, regardless of classification, is subject to queue 1 and ...
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... commands disables and then reenables ports (which can cause spanning tree topology changes), enter QoS commands only when necessary. 14-4 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Not user-configurable Default Value Disabled 0 • Threshold 1:100%1 • Transmit queue drop threshold 1: CoS 0-71. • Transmit queue 1: CoS 0-7 •...
... commands disables and then reenables ports (which can cause spanning tree topology changes), enter QoS commands only when necessary. 14-4 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Not user-configurable Default Value Disabled 0 • Threshold 1:100%1 • Transmit queue drop threshold 1: CoS 0-71. • Transmit queue 1: CoS 0-7 •...