Cisco WS-C2980G-A Software Guide - Page 239
Example VLAN Trunk Configurations, 802.1Q Trunk over a Gigabit EtherChannel Link Example
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Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports Example VLAN Trunk Configurations Port Vlans in spanning tree forwarding state and not pruned 4/1 2-6,10,20,50,100,152,200,300,400,500,521,524,570,776,802,850,917,999 Console> (enable) Example VLAN Trunk Configurations The following sections contains examples of a VLAN trunk configurations: Note For examples of configuring trunk links 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 Gigabit EtherChannel Link Example This sample configuration shows how to configure an 802.1Q trunk over a Gigabit EtherChannel link between two switches with 802.1Q-capable hardware. (Use the show port capabilities command to see if your hardware is 802.1Q-capable.) Figure 11-1 shows two switches connected through four 1000BASE-SX Gigabit Ethernet ports. Figure 11-1 IEEE 802.1Q Trunk over Gigabit EtherChannel Link 2/3 Switch A 2/4 2/5 2/6 3/3 3/4 Switch B 3/5 3/6 23848 Gigabit EtherChannel IEEE 802.1Q trunk link Note For complete information on configuring Gigabit EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." 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 all ports on both Switch A and Switch B are assigned to the same VLAN. This VLAN is used as the 802.1Q native VLAN for the trunk. In this example, all ports are configured as members of VLAN 1. Switch_A> (enable) set vlan 1 2/3-6 VLAN Mod/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
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