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... 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... 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
... 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... 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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Audience This publication is for configuring and maintaining Catalyst enterprise LAN switches. Configuring Ethernet and Fast Ethernet Switching Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii Configuring Fast EtherChannel Describes how...
Audience This publication is for configuring and maintaining Catalyst enterprise LAN switches. Configuring Ethernet and Fast Ethernet Switching Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii Configuring Fast EtherChannel Describes how...
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... oversubscribed ports has a buffer for the oversubscribed ports is receive desired and transmit on. The switch can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to 2-Gbps bandwidth in each direction while...Bundling multiple oversubscribed ports in each direction. • Server D is the only device that is through a four-port Gigabit EtherChannel trunk link. Each workstation connects to the switch through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... oversubscribed ports has a buffer for the oversubscribed ports is receive desired and transmit on. The switch can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to 2-Gbps bandwidth in each direction while...Bundling multiple oversubscribed ports in each direction. • Server D is the only device that is through a four-port Gigabit EtherChannel trunk link. Each workstation connects to the switch through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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Default Gigabit Ethernet Configuration Chapter 5 Configuring Gigabit Ethernet Switching Figure 5-1 Example of a Server Switching Network Topology Network backbone Backbone switch CAUTION THIS ASSEMBLY CONTAINS ELECTROSTATICSENSITIVE DEVICES 0% 100% 18069 Gigabit EtherChannel bundles Server A Server B Workstation 1 Workstation 3 Server D Workstation 4 Server C Workstation 2 ...cost 4 Gigabit EtherChannel Disabled on all Gigabit Ethernet ports (auto mode) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01
Default Gigabit Ethernet Configuration Chapter 5 Configuring Gigabit Ethernet Switching Figure 5-1 Example of a Server Switching Network Topology Network backbone Backbone switch CAUTION THIS ASSEMBLY CONTAINS ELECTROSTATICSENSITIVE DEVICES 0% 100% 18069 Gigabit EtherChannel bundles Server A Server B Workstation 1 Workstation 3 Server D Workstation 4 Server C Workstation 2 ...cost 4 Gigabit EtherChannel Disabled on all Gigabit Ethernet ports (auto mode) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01
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... usage information for EtherChannel, page 6-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-1 This chapter consists of...Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete information on the Catalyst enterprise LAN switches. CH A P T E R 6 Configuring Fast EtherChannel and Gigabit EtherChannel This chapter describes how to configure Fast EtherChannel and Gigabit EtherChannel port bundles on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to the Catalyst...
... usage information for EtherChannel, page 6-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-1 This chapter consists of...Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete information on the Catalyst enterprise LAN switches. CH A P T E R 6 Configuring Fast EtherChannel and Gigabit EtherChannel This chapter describes how to configure Fast EtherChannel and Gigabit EtherChannel port bundles on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to the Catalyst...
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..., on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of channels is sent when a failure identifies the switch, the EtherChannel, and the failed link. The configuration is hardware dependent. An EtherChannel bundle can configure any two to the source and destination MAC addresses. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software...
..., on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of channels is sent when a failure identifies the switch, the EtherChannel, and the failed link. The configuration is hardware dependent. An EtherChannel bundle can configure any two to the source and destination MAC addresses. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software...
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...or power cycled. Configuring EtherChannel Using PAgP These sections describe how to which the EtherChannel belongs. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 In addition to display the EtherChannel ID....Spanning Tree Port Cost, page 6-8 • Setting the EtherChannel Spanning Tree Port VLAN Cost, page 6-9 • Removing an EtherChannel Bundle, page 6-9 • Displaying EtherChannel Configuration Information, page 6-10 • Displaying EtherChannel Traffic Statistics, page 6-11 • Displaying ...
...or power cycled. Configuring EtherChannel Using PAgP These sections describe how to which the EtherChannel belongs. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 In addition to display the EtherChannel ID....Spanning Tree Port Cost, page 6-8 • Setting the EtherChannel Spanning Tree Port VLAN Cost, page 6-9 • Removing an EtherChannel Bundle, page 6-9 • Displaying EtherChannel Configuration Information, page 6-10 • Displaying EtherChannel Traffic Statistics, page 6-11 • Displaying ...
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... an EtherChannel, verify the EtherChannel capabilities for the module or switch you are allowed to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Chapter 6 Configuring Fast EtherChannel... and Gigabit EtherChannel Configuring EtherChannel Using PAgP Creating an EtherChannel You create an EtherChannel port bundle by hardware ...
... an EtherChannel, verify the EtherChannel capabilities for the module or switch you are allowed to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Chapter 6 Configuring Fast EtherChannel... and Gigabit EtherChannel Configuring EtherChannel Using PAgP Creating an EtherChannel You create an EtherChannel port bundle by hardware ...
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...enable) show port channel [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9 Warning:channel cost may ...not be applicable if channel is set channel cost 768 12 Port(s) 1/1,1/2 port path cost are updated to 31. Verify the configuration. Channel 768 cost is broken. Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle...
...enable) show port channel [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9 Warning:channel cost may ...not be applicable if channel is set channel cost 768 12 Port(s) 1/1,1/2 port path cost are updated to 31. Verify the configuration. Channel 768 cost is broken. Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle...
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...Figure 6-1 shows two switches connected through four 100BASE-TX Fast Ethernet ports. 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-...Release 8.1 78-15486-01 EtherChannel Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel 835 0 0 0 0 0 0 Console> (enable) Displaying EtherChannel PAgP Statistics To display EtherChannel PAgP statistics, perform one of configuring VLAN trunks on EtherChannel port bundles...
...Figure 6-1 shows two switches connected through four 100BASE-TX Fast Ethernet ports. 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-...Release 8.1 78-15486-01 EtherChannel Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel 835 0 0 0 0 0 0 Console> (enable) Displaying EtherChannel PAgP Statistics To display EtherChannel PAgP statistics, perform one of configuring VLAN trunks on EtherChannel port bundles...
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...bundle To configure a four-port EtherChannel link between two switches, follow these steps: Step 1 Step 2 Step 3 Make sure that the neighboring ports on Switch A and Switch B have the same port configuration, including VLAN membership, speed, and duplex. VLAN 1 modified. VLAN 1 modified. Switch_A> (enable) %PAGP-5-PORTFROMSTP:Port 1/1 left bridge port 1/1 78-15486-01 Catalyst 4500 Series, Catalyst... 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-13 Switch_A> (enable) ...
...bundle To configure a four-port EtherChannel link between two switches, follow these steps: Step 1 Step 2 Step 3 Make sure that the neighboring ports on Switch A and Switch B have the same port configuration, including VLAN membership, speed, and duplex. VLAN 1 modified. VLAN 1 modified. Switch_A> (enable) %PAGP-5-PORTFROMSTP:Port 1/1 left bridge port 1/1 78-15486-01 Catalyst 4500 Series, Catalyst... 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-13 Switch_A> (enable) ...
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...to configure a two-port Gigabit EtherChannel link between two switches. Figure 6-2 shows two switches connected through four 1000BASE-SX Gigabit Ethernet ports. 6-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 EtherChannel ...3/1-4 %PAGP-5-PORTTOSTP:Port 3/3 joined bridge port 3/1-4 %PAGP-5-PORTTOSTP:Port 3/4 joined bridge port 3/1-4 After the EtherChannel bundle is negotiated, enter the show port channel Port Status Channel Channel Neighbor Neighbor mode status device port 3/1 connected auto...
...to configure a two-port Gigabit EtherChannel link between two switches. Figure 6-2 shows two switches connected through four 1000BASE-SX Gigabit Ethernet ports. 6-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 EtherChannel ...3/1-4 %PAGP-5-PORTTOSTP:Port 3/3 joined bridge port 3/1-4 %PAGP-5-PORTTOSTP:Port 3/4 joined bridge port 3/1-4 After the EtherChannel bundle is negotiated, enter the show port channel Port Status Channel Channel Neighbor Neighbor mode status device port 3/1 connected auto...
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... system logging messages provide information about the formation of the EtherChannel bundle on . Switch_A> (enable) %PAGP-5-PORTFROMSTP:Port 2/1 left bridge port 2/1 %PAGP-5-PORTFROMSTP:Port 2/2 left bridge port 3/2 %PAGP-5-PORTTOSTP:Port 3/1 joined bridge port 3/1-2 %PAGP-5-PORTTOSTP:Port 3/2 joined bridge port 3/1-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-15
... system logging messages provide information about the formation of the EtherChannel bundle on . Switch_A> (enable) %PAGP-5-PORTFROMSTP:Port 2/1 left bridge port 2/1 %PAGP-5-PORTFROMSTP:Port 2/2 left bridge port 3/2 %PAGP-5-PORTTOSTP:Port 3/1 joined bridge port 3/1-2 %PAGP-5-PORTTOSTP:Port 3/2 joined bridge port 3/1-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-15
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... is negotiated, enter the show that prevents the port from channeling. 6-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If you need to configure at... least one side of LACP packets. Spanning tree loops can occur, and eventually the switch will pass over the EtherChannel. Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle...
... is negotiated, enter the show that prevents the port from channeling. 6-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If you need to configure at... least one side of LACP packets. Spanning tree loops can occur, and eventually the switch will pass over the EtherChannel. Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle...
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...the long method to divide the bandwidth of these states: • Blocking 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-5 These changes in one of the port by the switch and the recommended cost values and ranges for each port on the port bandwidth. Therefore, .... You can create temporary data loops. At any given time, each type of the default port cost for the aggregated port. When a switch port transitions directly from an aggregate link (port bundle), the bandwidth of the port concerned.
...the long method to divide the bandwidth of these states: • Blocking 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-5 These changes in one of the port by the switch and the recommended cost values and ranges for each port on the port bandwidth. Therefore, .... You can create temporary data loops. At any given time, each type of the default port cost for the aggregated port. When a switch port transitions directly from an aggregate link (port bundle), the bandwidth of the port concerned.
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...0 2/3 1 forwarding 19 16 disabled 0 2/4 1 not-connected 100 32 disabled 0 Configuring the PVST+ Default Port Cost Mode If any switch in your network is using a port speed of 10 Gb or over and the network is using the formula, AVERAGE_COST/NUM_PORT. You can ... speeds of a bundle using PVST+ spanning tree mode, all the ports to configure the default port cost mode: Console> (enable) set spantree defaultcostmode long Portcost and portvlancost set a cost value from 1- 65535. 7-26 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
...0 2/3 1 forwarding 19 16 disabled 0 2/4 1 not-connected 100 32 disabled 0 Configuring the PVST+ Default Port Cost Mode If any switch in your network is using a port speed of 10 Gb or over and the network is using the formula, AVERAGE_COST/NUM_PORT. You can ... speeds of a bundle using PVST+ spanning tree mode, all the ports to configure the default port cost mode: Console> (enable) set spantree defaultcostmode long Portcost and portvlancost set a cost value from 1- 65535. 7-26 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
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... Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on a Fast or Gigabit EtherChannel bundle. You can configure a trunk on a single Fast or Gigabit Ethernet port or on the Catalyst enterprise LAN switches. The Catalyst 4500 series, 2948G, and 2980G switches support IEEE 802.1Q-802.1Q trunking encapsulation. Trunking Overview A trunk is a point-to...
... Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on a Fast or Gigabit EtherChannel bundle. You can configure a trunk on a single Fast or Gigabit Ethernet port or on the Catalyst enterprise LAN switches. The Catalyst 4500 series, 2948G, and 2980G switches support IEEE 802.1Q-802.1Q trunking encapsulation. Trunking Overview A trunk is a point-to...
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...Ports 1 2/3-6 Switch_A> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-9 In this example, all ports on both Switch A and Switch B are configured as members of configuring trunk links between two switches with 802.1Q-capable hardware. (Use the show port...hardware is used as the 802.1Q native VLAN for the trunk. To configure the switches to form a four-port Gigabit EtherChannel bundle, and then configure the EtherChannel bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that...
...Ports 1 2/3-6 Switch_A> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-9 In this example, all ports on both Switch A and Switch B are configured as members of configuring trunk links between two switches with 802.1Q-capable hardware. (Use the show port...hardware is used as the 802.1Q native VLAN for the trunk. To configure the switches to form a four-port Gigabit EtherChannel bundle, and then configure the EtherChannel bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that...
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... Vlans allowed on trunk 1-1005, 1025-4094 1-1005, 1025-4094 1-1005, 1025-4094 1-1005, 1025-4094 Port Vlans allowed and active in the bundle. The system logging messages provide information about the formation of the 802.1Q trunk. Switch_A> (enable) set trunk 2/3 desirable dot1q Port(s) 2/3-6 trunk...to desirable. Port(s) 2/3-6 trunk type set to all of the ports in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Example VLAN Trunk Configurations Chapter 11 Configuring VLAN Trunks on...
... Vlans allowed on trunk 1-1005, 1025-4094 1-1005, 1025-4094 1-1005, 1025-4094 1-1005, 1025-4094 Port Vlans allowed and active in the bundle. The system logging messages provide information about the formation of the 802.1Q trunk. Switch_A> (enable) set trunk 2/3 desirable dot1q Port(s) 2/3-6 trunk...to desirable. Port(s) 2/3-6 trunk type set to all of the ports in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Example VLAN Trunk Configurations Chapter 11 Configuring VLAN Trunks on...
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...-4094 3/4 1-1005, 1025-4094 3/5 1-1005, 1025-4094 3/6 1-1005, 1025-4094 Switch_B> (enable) Confirm the channeling and trunking status of the EtherChannel bundle. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-11 Switch_A> (enable) show port channel No ports channelling Switch_A> (enable) show trunk No ports trunking. This...
...-4094 3/4 1-1005, 1025-4094 3/5 1-1005, 1025-4094 3/6 1-1005, 1025-4094 Switch_B> (enable) Confirm the channeling and trunking status of the EtherChannel bundle. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-11 Switch_A> (enable) show port channel No ports channelling Switch_A> (enable) show trunk No ports trunking. This...