Cisco WS-C4003 Software Guide - Page 189
Step 4, to become trunk links assuming that the Switch 2 uplinks are in the default
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Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports Example VLAN Trunk Configurations Step 4 Step 5 BigCorp 1 2 server - Vlan-count Max-vlan-storage Config Revision Notifications 11 1023 13 disabled Last Updater V2 Mode Pruning PruneEligible on Vlans 172.20.52.10 disabled enabled 2-1000 Switch_1> (enable) show vlan VLAN Name Status Mod/Ports, Vlans 1 default active 1/1-2 2/1-12 5/1-2 10 VLAN0010 active 20 VLAN0020 active 30 VLAN0030 active 40 VLAN0040 active 50 VLAN0050 active 60 VLAN0060 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active . . . Switch_1> (enable) Configure the supervisor engine uplinks on Switch 1 as 802.1Q trunk ports by entering the set trunk command. Specifying the desirable mode on the Switch 1 ports causes the ports on Switch 2 to negotiate to become trunk links (assuming that the Switch 2 uplinks are in the default auto mode). Switch_1> (enable) set trunk 1/1 desirable Port(s) 1/1 trunk mode set to desirable. 2000 Jul 12 01:56:28 %DTP-5-TRUNKPORTON:Port 1/1 has become dot1q trunk Switch_1> (enable) Switch_1> (enable) set trunk 1/2 desirable Port(s) 1/2 trunk mode set to desirable. 2000 Jul 12 01:56:52 %DTP-5-TRUNKPORTON:Port 1/2 has become dot1q trunk Switch_1> (enable) Verify that the trunk links are up by entering the show trunk command: Switch_1> (enable) show trunk 1 * - indicates vtp domain mismatch Port Mode Encapsulation 1/1 desirable dot1q 1/2 desirable dot1q Status -----------trunking trunking Native vlan ----------1 1 Port -------- 1/1 1/2 Vlans allowed on trunk 1-1005 1-1005 Port -------- 1/1 1/2 Vlans allowed and active in management domain 1-2,10,20,30,40,50,60,99-105 1-2,10,20,30,40,50,60,99-105 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 11-13