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... 4-3 Setting Ethernet and Fast Ethernet Port Priority Levels 4-4 Setting Ethernet and Fast Ethernet Port Speeds 4-4 Setting Ethernet and Fast Ethernet Port Duplex Modes 4-5 Setting Ethernet and Fast Ethernet Port Debounce Timers 4-6 Configuring errdisable State Ethernet and Fast Ethernet Port Timeout Periods 4-7 Checking Ethernet and Fast Ethernet Port Connectivity 4-8 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 iv...
... 4-3 Setting Ethernet and Fast Ethernet Port Priority Levels 4-4 Setting Ethernet and Fast Ethernet Port Speeds 4-4 Setting Ethernet and Fast Ethernet Port Duplex Modes 4-5 Setting Ethernet and Fast Ethernet Port Debounce Timers 4-6 Configuring errdisable State Ethernet and Fast Ethernet Port Timeout Periods 4-7 Checking Ethernet and Fast Ethernet Port Connectivity 4-8 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 iv...
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... EtherChannel 6-7 Defining an EtherChannel Administrative Group 6-7 Setting the EtherChannel Spanning Tree Port Cost 6-8 Setting the EtherChannel Spanning Tree Port VLAN Cost 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
... EtherChannel 6-7 Defining an EtherChannel Administrative Group 6-7 Setting the EtherChannel Spanning Tree Port Cost 6-8 Setting the EtherChannel Spanning Tree Port VLAN Cost 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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... 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 20-2 Displaying the Port MAC Address 20-4 Displaying Port Capabilities 20-5 Using Telnet 20-6 Changing the... 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
... 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 20-2 Displaying the Port MAC Address 20-4 Displaying Port Capabilities 20-5 Using Telnet 20-6 Changing the... 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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... Ethernet ports. Configuring QoS Describes how to check connectivity using ping, Telnet, and IP traceroute. Configuring Unicast Flood Blocking Describes how to configure Inter-Switch Link (ISL) and IEEE 802.1Q VLAN trunks on the switch. Configuring Multicast Services Describes how to generate switch TopN reports on the switch. Using Switch TopN Reports Describes how to configure Cisco...
... Ethernet ports. Configuring QoS Describes how to check connectivity using ping, Telnet, and IP traceroute. Configuring Unicast Flood Blocking Describes how to configure Inter-Switch Link (ISL) and IEEE 802.1Q VLAN trunks on the switch. Configuring Multicast Services Describes how to generate switch TopN reports on the switch. Using Switch TopN Reports Describes how to configure Cisco...
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... this display: Cisco Systems, Inc. You configure the switch using the appropriate application or commands on the terminal (for your switch. Enter set commands to a specific module, port, or VLAN. To access the switch CLI through the console port, follow these steps: Step 1 Step 2 Connect to the switch through a Telnet session. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
... this display: Cisco Systems, Inc. You configure the switch using the appropriate application or commands on the terminal (for your switch. Enter set commands to a specific module, port, or VLAN. To access the switch CLI through the console port, follow these steps: Step 1 Step 2 Connect to the switch through a Telnet session. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
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... for point-to restore the console port connection. Enable SLIP for the SLIP connection. Use Telnet to access the switch, enter privileged mode, and enter the slip detach command to -point SLIP connections between the switch and an IP host. Console> (enable) show interface slip attach Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-8 78-15486...
... for point-to restore the console port connection. Enable SLIP for the SLIP connection. Use Telnet to access the switch, enter privileged mode, and enter the slip detach command to -point SLIP connections between the switch and an IP host. Console> (enable) show interface slip attach Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-8 78-15486...
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... 4-5 • Setting Ethernet and Fast Ethernet Port Debounce Timers, page 4-6 • Configuring errdisable State Ethernet and Fast Ethernet Port Timeout Periods, page 4-7 • Checking Ethernet and Fast Ethernet Port Connectivity, page 4-8 Note For information on Ethernet and Fast Ethernet modules to facilitate switch administration. To assign a name to a port, perform this task in privileged mode: Step...
... 4-5 • Setting Ethernet and Fast Ethernet Port Debounce Timers, page 4-6 • Configuring errdisable State Ethernet and Fast Ethernet Port Timeout Periods, page 4-7 • Checking Ethernet and Fast Ethernet Port Connectivity, page 4-8 Note For information on Ethernet and Fast Ethernet modules to facilitate switch administration. To assign a name to a port, perform this task in privileged mode: Step...
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... 6 ms 3 ms 3 ms 4 somehost.company.com (10.1.2.3) 3 ms * 2 ms Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-8 78-15486-01 show errdisable-timeout ErrDisable Reason Timeout Status bpdu-guard Enable channel-misconfig... Console> (enable) Checking Ethernet and Fast Ethernet Port Connectivity Note For more detailed information on the switch. Configuring Ethernet and Fast Ethernet Ports Chapter 4 Configuring Ethernet and Fast Ethernet Switching This example shows how to display the errdisable timeout...
... 6 ms 3 ms 3 ms 4 somehost.company.com (10.1.2.3) 3 ms * 2 ms Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-8 78-15486-01 show errdisable-timeout ErrDisable Reason Timeout Status bpdu-guard Enable channel-misconfig... Console> (enable) Checking Ethernet and Fast Ethernet Port Connectivity Note For more detailed information on the switch. Configuring Ethernet and Fast Ethernet Ports Chapter 4 Configuring Ethernet and Fast Ethernet Switching This example shows how to display the errdisable timeout...
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....1.201) 6 ms 3 ms 3 ms 4 somehost.company.com (10.1.2.3) 3 ms * 2 ms Console> (enable) 5-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Trace the hop-by -hop path of packets from the...interface default gateway configured on checking connectivity, see Chapter 20, "Checking Status and Connectivity." Enter the ping and traceroute commands to test. Configuring Gigabit Ethernet Ports Chapter 5 Configuring Gigabit Ethernet Switching Checking Gigabit Ethernet Port Connectivity Note For more detailed information on...
....1.201) 6 ms 3 ms 3 ms 4 somehost.company.com (10.1.2.3) 3 ms * 2 ms Console> (enable) 5-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Trace the hop-by -hop path of packets from the...interface default gateway configured on checking connectivity, see Chapter 20, "Checking Status and Connectivity." Enter the ping and traceroute commands to test. Configuring Gigabit Ethernet Ports Chapter 5 Configuring Gigabit Ethernet Switching Checking Gigabit Ethernet Port Connectivity Note For more detailed information on...
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...is the root port. Network traffic might be the ideal root switch. By changing the Port Priority parameter for the UTP port to a higher priority (lower numerical value) than that of the fiber-optic port. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-... the root port, connecting higher-speed links to a port that has a higher number than the current root port can also change . You can force a switch to become the root switch by changing the port cost parameter for each switch port In a switched network, the root switch is the...
...is the root port. Network traffic might be the ideal root switch. By changing the Port Priority parameter for the UTP port to a higher priority (lower numerical value) than that of the fiber-optic port. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-... the root port, connecting higher-speed links to a port that has a higher number than the current root port can also change . You can force a switch to become the root switch by changing the port cost parameter for each switch port In a switched network, the root switch is the...
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...follows: • Forwards frames received from the attached segment • Forwards frames switched from another port for forwarding • Incorporates station location information into its address database •...ports connected to go directly to the forwarding state, instead of having to switches or other devices that forward messages. To prevent illegal topologies, enable spanning tree on PortFast, see Chapter 8, "Configuring Spanning Tree PortFast, BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop Guard." 7-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
...follows: • Forwards frames received from the attached segment • Forwards frames switched from another port for forwarding • Incorporates station location information into its address database •...ports connected to go directly to the forwarding state, instead of having to switches or other devices that forward messages. To prevent illegal topologies, enable spanning tree on PortFast, see Chapter 8, "Configuring Spanning Tree PortFast, BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop Guard." 7-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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..., PortFast turns off operationally if the port receives a BPDU. To establish rapid connectivity after a failure, you enable PortFast on that can set spantree mst link-type command to configure point-to a host or router. You must explicitly configure ports to -point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486...
..., PortFast turns off operationally if the port receives a BPDU. To establish rapid connectivity after a failure, you enable PortFast on that can set spantree mst link-type command to configure point-to a host or router. You must explicitly configure ports to -point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486...
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... BPDUs. BDPU filtering is supported only on PortFast-enabled ports that connect end stations to the forwarding or blocking state. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-2 78-15486-01 after you enable PortFast on a switch or trunk port, the port is enabled on the switch, spanning tree shuts down PortFast-configured interfaces that receive...
... BPDUs. BDPU filtering is supported only on PortFast-enabled ports that connect end stations to the forwarding or blocking state. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-2 78-15486-01 after you enable PortFast on a switch or trunk port, the port is enabled on the switch, spanning tree shuts down PortFast-configured interfaces that receive...
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... spantree portfast mod_num/port_num enable | disable show spantree [mod_num/port_num] [vlan] Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-8 78-15486-01 To enable PortFast on a switch port, perform this task in privileged mode: Step 1 Step 2 Task Enable PortFast on a switch port connected to detect it remains blocked even after receiving a BPDU on all the...
... spantree portfast mod_num/port_num enable | disable show spantree [mod_num/port_num] [vlan] Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-8 78-15486-01 To enable PortFast on a switch port, perform this task in privileged mode: Step 1 Step 2 Task Enable PortFast on a switch port connected to detect it remains blocked even after receiving a BPDU on all the...
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... type, and the hardware capabilities of the two connected ports determine whether a trunk link comes up and the type of the possible trunking configurations. Chapter 11 Configuring VLAN Trunks on a link to a Cisco router, use the show port capabilities command. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-3 Table 11...
... type, and the hardware capabilities of the two connected ports determine whether a trunk link comes up and the type of the possible trunking configurations. Chapter 11 Configuring VLAN Trunks on a link to a Cisco router, use the show port capabilities command. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-3 Table 11...
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... VLAN, the port connects immediately to two backup VMPS servers in your network. • The primary VMPS server and backup VMPS servers do not communicate with VMPS Default VMPS and Dynamic Port Configuration Default VMPS and Dynamic Port Configuration Table 12...port. • If you configure a port as dynamic. • When you reconfigure a port from timing out and entering loops caused by incorrect configurations. you can disable spanning tree PortFast mode on the dynamic port after a specified period. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... VLAN, the port connects immediately to two backup VMPS servers in your network. • The primary VMPS server and backup VMPS servers do not communicate with VMPS Default VMPS and Dynamic Port Configuration Default VMPS and Dynamic Port Configuration Table 12...port. • If you configure a port as dynamic. • When you reconfigure a port from timing out and entering loops caused by incorrect configurations. you can disable spanning tree PortFast mode on the dynamic port after a specified period. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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..., a TACACS+ encryption key is enabled for console connections. In this example, TACACS+ authentication is enabled and local authentication is enabled for telnet session. 30-40 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Console>... set to configure the switch so that TACACS+ authentication is enabled for Telnet connections and local authentication is specified. Figure 30-3 Example of a TACACS+ Network Topology TACACS+ server 172.20.52.10 Switch Console port connection 18927 Workstation A Terminal ...
..., a TACACS+ encryption key is enabled for console connections. In this example, TACACS+ authentication is enabled and local authentication is enabled for telnet session. 30-40 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Console>... set to configure the switch so that TACACS+ authentication is enabled for Telnet connections and local authentication is specified. Figure 30-3 Example of a TACACS+ Network Topology TACACS+ server 172.20.52.10 Switch Console port connection 18927 Workstation A Terminal ...
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... Works Figure 30-4 Example of a TACACS+ Network Topology TACACS+ server 172.20.52.10 Switch Console port connection 18927 Workstation A Terminal This example shows that TACACS+ authorization is enabled for enable mode access to the switch for both Telnet and console connections, authorizing configuration commands: Console> (enable) set authorization commands enable config tacacs+ deny both...
... Works Figure 30-4 Example of a TACACS+ Network Topology TACACS+ server 172.20.52.10 Switch Console port connection 18927 Workstation A Terminal This example shows that TACACS+ authorization is enabled for enable mode access to the switch for both Telnet and console connections, authorizing configuration commands: Console> (enable) set authorization commands enable config tacacs+ deny both...
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... Example of a TACACS+ Network Topology TACACS+ server 172.20.52.10 Switch Console port connection 18927 Workstation A Terminal This example shows that TACACS+ accounting is enabled for connection, EXEC, system, and all : tacacs+ stop-only TACACS+ Suppress for... User (null) Priv 0 Overall Accounting Traffic: Starts Stops Active Exec 0 0 0 Connect 0 0 0 Command 0 0 0 System 1 0 0 Console> (enable) 30-54 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Console> (enable) set accounting exec enable stop...
... Example of a TACACS+ Network Topology TACACS+ server 172.20.52.10 Switch Console port connection 18927 Workstation A Terminal This example shows that TACACS+ accounting is enabled for connection, EXEC, system, and all : tacacs+ stop-only TACACS+ Suppress for... User (null) Priv 0 Overall Accounting Traffic: Starts Stops Active Exec 0 0 0 Connect 0 0 0 Command 0 0 0 System 1 0 0 Console> (enable) 30-54 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Console> (enable) set accounting exec enable stop...
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... modes are no Gigabit Ethernet uplink port connections. there are no Gigabit Ethernet uplink port connections. there are supported. This mode requires that the Backplane Channel Module is installed and that you need to disable the two front-panel Gigabit Ethernet uplink ports on the Switch Chapter 36 Configuring Switch Acceleration Switch acceleration is not configured on the...
... modes are no Gigabit Ethernet uplink port connections. there are no Gigabit Ethernet uplink port connections. there are supported. This mode requires that the Backplane Channel Module is installed and that you need to disable the two front-panel Gigabit Ethernet uplink ports on the Switch Chapter 36 Configuring Switch Acceleration Switch acceleration is not configured on the...