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• Configure the link between SW2 and R6 as an 802.1q trunk link.
• Using the subinterfaces listed in the diagram configure R6 to route traffic for both VLANs 67 and 146 on its Ethernet link.

SW2(config)#int Fa 0/6
SW2(config-if)#switchport trunk encapsulation dot1q 
SW2(config-if)#switchport mode  trunk 
SW2(config-if)#end

R6(config)#int Fa 1/0.67
R6(config-subif)#encapsulation dot1Q 67
R6(config-subif)#ip address 155.1.67.6 255.255.255.0
R6(config-subif)#exit
R6(config)#int Fa 1/0.146                     
R6(config-subif)#encapsulation dot1Q 146            
R6(config-subif)#ip address 155.1.146.6 255.255.255.0
R6(config-subif)#exit
R6(config)#end

• Verify that R6 has reachability to devices both on VLAN 67 and 146.

SW2#sh int fa0/6 trunk
Port        Mode         Encapsulation  Status        Native vlan
Fa0/6       on           802.1q         trunking      1
Port        Vlans allowed on trunk
Fa0/6       1-4094
Port        Vlans allowed and active in management domain
Fa0/6       1,5,7-10,22,43,58,67,69,79,146
Port        Vlans in spanning tree forwarding state and not pruned
Fa0/6       1,5,7-10,22,43,58,67,69,79,146

R6#ping 155.1.67.7
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 155.1.67.7, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
R6#ping 155.1.146.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 155.1.146.4, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms