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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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... Gigabit EtherChannel Gigabit EtherChannel port bundles. Configuring Spanning Tree Describes how to configure the Spanning Tree Protocol and explains how spanning tree works. Audience This publication is for configuring and maintaining Catalyst enterprise LAN switches. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii...
... Gigabit EtherChannel Gigabit EtherChannel port bundles. Configuring Spanning Tree Describes how to configure the Spanning Tree Protocol and explains how spanning tree works. Audience This publication is for configuring and maintaining Catalyst enterprise LAN switches. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii...
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... while maintaining an average of an 18-port server switching module (WS-X4418-GB) connecting multiple network servers and high-end workstations to the oversubscribed port group and can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect... Workstations 1 through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 Bundling multiple oversubscribed ports in each connected port (500 Mbps total) in the same port group increases ...
... while maintaining an average of an 18-port server switching module (WS-X4418-GB) connecting multiple network servers and high-end workstations to the oversubscribed port group and can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect... Workstations 1 through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 Bundling multiple oversubscribed ports in each connected port (500 Mbps total) in the same port group increases ...
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... 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...
... 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...
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... used in this chapter, refer to the Catalyst 4500 Series, 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...
... used in this chapter, refer to the Catalyst 4500 Series, 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...
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... links. Note MAC address notification settings are ignored on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of each frame. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 If...an EtherChannel according to form a channel through dynamic negotiation with devices that can bundle into a single logical transmission path between a switch and a router, a host, or another switch. PAgP and LACP Port Aggregation Control Protocol (PAgP) and Link Aggregation Control ...
... links. Note MAC address notification settings are ignored on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of each frame. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 If...an EtherChannel according to form a channel through dynamic negotiation with devices that can bundle into a single logical transmission path between a switch and a router, a host, or another switch. PAgP and LACP Port Aggregation Control Protocol (PAgP) and Link Aggregation Control ...
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...can change if the EtherChannel is torn down and renegotiated, or if the switch is automatically assigned a unique EtherChannel ID. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 An administrative group can contain...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 ...
...can change if the EtherChannel is torn down and renegotiated, or if the switch is automatically assigned a unique EtherChannel ID. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 An administrative group can contain...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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..., verify the EtherChannel capabilities for the module or switch you create an EtherChannel, an administrative group number is assigned automatically if one is not already assigned to form an EtherChannel bundle. Caution Modifying the EtherChannel administrative group on . ... then added to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Console> (enable) show port channel [port_list] This example shows how to create an EtherChannel bundle and verify the configuration: Console> (enable) set...
..., verify the EtherChannel capabilities for the module or switch you create an EtherChannel, an administrative group number is assigned automatically if one is not already assigned to form an EtherChannel bundle. Caution Modifying the EtherChannel administrative group on . ... then added to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Console> (enable) show port channel [port_list] This example shows how to create an EtherChannel bundle and verify the configuration: Console> (enable) set...
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...cost for channel ID 768: Console> (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 Verify the configuration. Setting the spanning tree port VLAN cost provides ...load balancing of the channel). Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle ...
...cost for channel ID 768: Console> (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 Verify the configuration. Setting the spanning tree port VLAN cost provides ...load balancing of the channel). Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle ...
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... by EtherChannel ID. Configuration Example of configuring VLAN trunks on EtherChannel port bundles, see the "Example VLAN Trunk Configurations" section on page 11-9. 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 Display EtherChannel PAgP statistics by... Gigabit EtherChannel, page 6-14 Note For examples of a Four-Port Fast EtherChannel This example shows how to configure a four-port Fast EtherChannel link between two switches.
... by EtherChannel ID. Configuration Example of configuring VLAN trunks on EtherChannel port bundles, see the "Example VLAN Trunk Configurations" section on page 11-9. 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 Display EtherChannel PAgP statistics by... Gigabit EtherChannel, page 6-14 Note For examples of a Four-Port Fast EtherChannel This example shows how to configure a four-port Fast EtherChannel link between two switches.
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... EtherChannel and Gigabit EtherChannel EtherChannel Configuration Examples Figure 6-1 Example of a Fast EtherChannel Port Bundle 1/1 Switch A 1/2 1/3 1/4 3/1 3/2 Switch B 3/3 3/4 23923 Fast EtherChannel port 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 B are in EtherChannel auto mode. VLAN Mod/Ports 50 3/1-4 Switch_B> (enable) set...
... EtherChannel and Gigabit EtherChannel EtherChannel Configuration Examples Figure 6-1 Example of a Fast EtherChannel Port Bundle 1/1 Switch A 1/2 1/3 1/4 3/1 3/2 Switch B 3/3 3/4 23923 Fast EtherChannel port 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 B are in EtherChannel auto mode. VLAN Mod/Ports 50 3/1-4 Switch_B> (enable) set...
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... 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 Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit...3/2 joined bridge port 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 channel WS-C4012 009979082(...
... 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 Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit...3/2 joined bridge port 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 channel WS-C4012 009979082(...
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...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 VLAN 1 modified. Switch_A> (enable) show port channel ...No ports channelling Switch_A> (enable) Switch_B> (enable) show port channel command. If you configure ports on, you must configure the ports on both ends of the EtherChannel bundle...
...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 VLAN 1 modified. Switch_A> (enable) show port channel ...No ports channelling Switch_A> (enable) Switch_B> (enable) show port channel command. If you configure ports on, you must configure the ports on both ends of the EtherChannel bundle...
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Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle is connected to another port group in these sections if you are channeling, but no traffic will disable the ...respond to on off . Spanning tree loops can occur, and eventually the switch will pass over the EtherChannel. Table 6-2 describes the EtherChannel modes 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 Table 6-2 EtherChannel Modes That...
Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle is connected to another port group in these sections if you are channeling, but no traffic will disable the ...respond to on off . Spanning tree loops can occur, and eventually the switch will pass over the EtherChannel. Table 6-2 describes the EtherChannel modes 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 Table 6-2 EtherChannel Modes That...
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...The formula for obtaining default 32-bit port costs is to the default port cost or changes resulting from an aggregate link (port bundle), the bandwidth of the limitations that are assigned by automatically recalculating the topology, 802.1t states that have been forwarded using STP ...cost of port when you use the long method to 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 Therefore, the aggregated port uses the same port cost parameters as a standalone port. When...
...The formula for obtaining default 32-bit port costs is to the default port cost or changes resulting from an aggregate link (port bundle), the bandwidth of the limitations that are assigned by automatically recalculating the topology, 802.1t states that have been forwarded using STP ...cost of port when you use the long method to 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 Therefore, the aggregated port uses the same port cost parameters as a standalone port. When...
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... PVST+ Port VLAN Cost You can set a cost value from 1- 65535. 7-26 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 EtherChannel computes the cost of a bundle using PVST+ spanning tree mode, all the ports to have the same path cost defaults...disabled 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. The default cost ...
... PVST+ Port VLAN Cost You can set a cost value from 1- 65535. 7-26 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 EtherChannel computes the cost of a bundle using PVST+ spanning tree mode, all the ports to have the same path cost defaults...disabled 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. The default cost ...
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...EtherChannel bundle. For more switch ports and another networking device such as a router or a switch. Trunking Overview A trunk is a point-to configure Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on the Catalyst enterprise LAN switches. The Catalyst 4500 series, 2948G, and 2980G switches ...trunking encapsulation. This chapter consists of multiple VLANs over a single link and allow you to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete syntax and usage information for the commands used in this chapter, ...
...EtherChannel bundle. For more switch ports and another networking device such as a router or a switch. Trunking Overview A trunk is a point-to configure Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on the Catalyst enterprise LAN switches. The Catalyst 4500 series, 2948G, and 2980G switches ...trunking encapsulation. This chapter consists of multiple VLANs over a single link and allow you to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete syntax and usage information for the commands used in this chapter, ...
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...bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that all ports are assigned to see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Figure 11-1 IEEE 802.1Q Trunk over a Gigabit EtherChannel link between switches and routers, refer to the Layer 3 Switching Software Configuration Guide-Catalyst... 5000 Family, 4000 Family, 2926G Series, 2926 Series, 2948G, and 2980G Switches publication. 802.1Q Trunk over a ...
...bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that all ports are assigned to see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Figure 11-1 IEEE 802.1Q Trunk over a Gigabit EtherChannel link between switches and routers, refer to the Layer 3 Switching Software Configuration Guide-Catalyst... 5000 Family, 4000 Family, 2926G Series, 2926 Series, 2948G, and 2980G Switches publication. 802.1Q Trunk over a ...
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... Ports Step 2 Switch_B> (enable) set vlan 1 3/3-6 VLAN Mod/Ports 1 3/3-6 Switch_B> (enable) Configure one of the ports in the bundle. Switch_A> (enable) set trunk 2/3 desirable dot1q Port(s) 2/3-6 trunk mode set to negotiate an 802.1Q trunk. Switch_A> (enable) %DTP-5-...the EtherChannel bundle to dot1q. This example assumes that the neighboring ports on Switch B are configured to desirable. Port(s) 2/3-6 trunk type set to use dot1q or negotiate encapsulation and are in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
... Ports Step 2 Switch_B> (enable) set vlan 1 3/3-6 VLAN Mod/Ports 1 3/3-6 Switch_B> (enable) Configure one of the ports in the bundle. Switch_A> (enable) set trunk 2/3 desirable dot1q Port(s) 2/3-6 trunk mode set to negotiate an 802.1Q trunk. Switch_A> (enable) %DTP-5-...the EtherChannel bundle to dot1q. This example assumes that the neighboring ports on Switch B are configured to desirable. Port(s) 2/3-6 trunk type set to use dot1q or negotiate encapsulation and are in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
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..., 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) Switch_B> (enable) show port channel No ports channelling ... show port channel and show trunk commands. This example assumes that the neighboring ports on Switch A to negotiate a Gigabit EtherChannel bundle with the neighboring switch. Switch_A> (enable) show port channel No ports channelling Switch_A> (enable) show trunk...
..., 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) Switch_B> (enable) show port channel No ports channelling ... show port channel and show trunk commands. This example assumes that the neighboring ports on Switch A to negotiate a Gigabit EtherChannel bundle with the neighboring switch. Switch_A> (enable) show port channel No ports channelling Switch_A> (enable) show trunk...