• Configure all inter-switch links on SW2, SW3, and SW4 to be in dynamic
auto state.
• Configure all inter-switch links on SW1 to be in dynamic desirable state.
• Configure SW2 as a VTP server in the domain VTP.
• Configure SW1, SW3, and SW4 as VTP clients in the domain VTP.
SW1:
vtp domain VTP
vtp mode client
!
interface range FastEthernet0/13 - 21
switchport mode dynamic desirable
!
interface FastEthernet0/1
switchport access vlan 146
!
interface FastEthernet0/5
switchport access vlan 58
SW2
vtp domain VTP
vlan 5,7,8,9,10,22,43,58,67,79,146
!
interface FastEthernet0/2
switchport access vlan 22
!
interface FastEthernet0/4
switchport access vlan 43
!
interface FastEthernet0/6
switchport trunk encapsulation dot1q
switchport mode trunk
!
Modify the native VLAN on the 802.1q trunks of SW1 so that traffic between devices in VLAN 146 is not tagged when sent over the trunk links.
SW1(config)#int range Fa0/13 - 21
SW1(config-if-range)#switchport trunk native vlan 146
SW2(config)#int range Fa0/13 - 21
SW2(config-if-range)#switchport trunk native vlan 146
SW3(config)#int range Fa0/13 - 21
SW3(config-if-range)#switchport trunk native vlan 146
SW4(config)#int range Fa0/13 - 21
SW4(config-if-range)#switchport trunk native vlan 146
Verification:
SW1#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 desirable 802.1q trunking 146
Fa0/14 desirable 802.1q trunking 146
Fa0/15 desirable 802.1q trunking 146
Fa0/16 desirable 802.1q trunking 146
Fa0/17 desirable 802.1q trunking 146
Fa0/18 desirable 802.1q trunking 146
Fa0/19 desirable 802.1q trunking 146
Fa0/20 desirable 802.1q trunking 146
Fa0/21 desirable 802.1q trunking 146
SW2#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/6 on 802.1q trunking 1
Fa0/13 auto n-802.1q trunking 146
Fa0/14 auto n-802.1q trunking 146
Fa0/15 auto n-802.1q trunking 146
SW3#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 auto n-802.1q trunking 146
Fa0/14 auto n-802.1q trunking 146
Fa0/15 auto n-802.1q trunking 146
SW4#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 auto n-802.1q trunking 146
Fa0/14 auto n-802.1q trunking 146
Fa0/15 auto n-802.1q trunking 146
Statically set the trunking encapsulation of SW1’s inter-switch links to ISL.
SW1(config)#int ra fa 0/13 - 21
SW1(config-if-range)#switchport trunk encapsulation isl
Verify that SW2, SW3, & SW4 are negotiating ISL as the trunking encapsulation to SW1, and that SW1 is not negotiating ISL to SW2, SW3,and SW4.
SW1#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 desirable isl trunking 1
Fa0/14 desirable isl trunking 1
Fa0/15 desirable isl trunking 1
Fa0/16 desirable isl trunking 1
Fa0/17 desirable isl trunking 1
Fa0/18 desirable isl trunking 1
Fa0/19 desirable isl trunking 1
Fa0/20 desirable isl trunking 1
Fa0/21 desirable isl trunking 1
SW2#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/6 on 802.1q trunking 1
Fa0/13 auto n-isl trunking 1
Fa0/14 auto n-isl trunking 1
Fa0/15 auto n-isl trunking 1
SW3#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 auto n-isl trunking 1
Fa0/14 auto n-isl trunking 1
Fa0/15 auto n-isl trunking 1
SW4#sh int trunk
Port Mode Encapsulation Status Native vlan
Fa0/13 auto n-isl trunking 1
Fa0/14 auto n-isl trunking 1
Fa0/15 auto n-isl trunking 1
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)#vlan 67,146
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.