Cisco WS-X6K-S2-PFC2 Software Guide - Page 92
set spantree portvlanpri, Step 8, Caution
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Example VLAN Trunk Configurations Chapter 5 Configuring Ethernet VLAN Trunks Step 8 Divide the configured VLANs into two groups. You might want traffic from half of the VLANs to go over one trunk link and half over the other, or if one VLAN has heavier traffic than the others, you can forward traffic from that VLAN over one trunk and traffic from the other VLANs over the other trunk link. Note In the following steps, VLANs 10, 20, and 30 (Group 1) are forwarded over Trunk 1, and VLANs 40, 50, and 60 (Group 2) are forwarded over Trunk 2. Step 9 On Switch 1, change the port-VLAN priority for the Group 1 VLANs on Trunk 1 (port 1/1) to an integer value lower than the default of 32 by entering the set spantree portvlanpri command. Switch_1> (enable) set spantree portvlanpri 1/1 1 10 Port 1/1 vlans 1-9,11-1004 using portpri 32. Port 1/1 vlans 10 using portpri 1. Port 1/1 vlans 1005 using portpri 4. Switch_1> (enable) set spantree portvlanpri 1/1 1 20 Port 1/1 vlans 1-9,11-19,21-1004 using portpri 32. Port 1/1 vlans 10,20 using portpri 1. Port 1/1 vlans 1005 using portpri 4. Switch_1> (enable) set spantree portvlanpri 1/1 1 30 Port 1/1 vlans 1-9,11-19,21-29,31-1004 using portpri 32. Port 1/1 vlans 10,20,30 using portpri 1. Port 1/1 vlans 1005 using portpri 4. Switch_1> (enable) Step 10 On Switch 1, change the port-VLAN priority for the Group 2 VLANs on Trunk 2 (port 1/2) to an integer value lower than the default of 32 by entering the set spantree portvlanpri command. Switch_1> (enable) set spantree portvlanpri 1/2 1 40 Port 1/2 vlans 1-39,41-1004 using portpri 32. Port 1/2 vlans 40 using portpri 1. Port 1/2 vlans 1005 using portpri 4. Switch_1> (enable) set spantree portvlanpri 1/2 1 50 Port 1/2 vlans 1-39,41-49,51-1004 using portpri 32. Port 1/2 vlans 40,50 using portpri 1. Port 1/2 vlans 1005 using portpri 4. Switch_1> (enable) set spantree portvlanpri 1/2 1 60 Port 1/2 vlans 1-39,41-49,51-59,61-1004 using portpri 32. Port 1/2 vlans 40,50,60 using portpri 1. Port 1/2 vlans 1005 using portpri 4. Switch_1> (enable) Step 11 On Switch 2, change the port-VLAN priority for the Group 1 VLANs on Trunk 1 (port 1/1) to the same value you configured for those VLANs on Switch 1 by entering the set spantree portvlanpri command. Caution The port-VLAN priority for each VLAN must be equal on both ends of the link. Switch_2> (enable) set spantree portvlanpri 1/1 1 10 Port 1/1 vlans 1-9,11-1004 using portpri 32. Port 1/1 vlans 10 using portpri 1. Port 1/1 vlans 1005 using portpri 4. Switch_2> (enable) set spantree portvlanpri 1/1 1 20 Port 1/1 vlans 1-9,11-19,21-1004 using portpri 32. Port 1/1 vlans 10,20 using portpri 1. Port 1/1 vlans 1005 using portpri 4. Switch_2> (enable) set spantree portvlanpri 1/1 1 30 Port 1/1 vlans 1-9,11-19,21-29,31-1004 using portpri 32. Port 1/1 vlans 10,20,30 using portpri 1. Port 1/1 vlans 1005 using portpri 4. Switch_2> (enable) 5-20 Catalyst 6000 Family Software Configuration Guide-Releases 6.3 and 6.4 78-13315-02
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