Tasks
Configure four switches as discribed about Multiple STP (MST), Native VLAN, allowed VLANs
Please type configuration commands here:
1. Configure VLANs 10, 20, 30, 40 on all switches. Use the default VLAN names.
SW1,2,3,4(config)#
(1)
SW1,2,3,4(config-vlan)#exit (to apply the configured VLANs)
2. Configure Multiple STP as follows:
a) Enter MST configuration mode:
SW1,2(config)#
(2)
b) Name MST "digitaltut":
SW1,2(config-mst)#
(3)
c) Set revision to 1:
SW1,2(config-mst)#
(4)
d) VLANs 10 and 20 should be mapped to MST Instance#1:
SW1,2(config-mst)#
(5)
e) VLANs 30 and 40 should be mapped to MST Instance#2:
SW1,2(config-mst)#
(6)
SW1,2(config-mst)#exit (to apply this MST configuration)
f) Ensure SW1 is root switch for Common and Internal Spanning Tree (CIST) VLANs and Instance#1; and backup root switch for Instance#2 without using "priority" keyword. Note: Please type three commands in the order described above
SW1(config)#
(7)
SW1(config)#
(8)
SW1(config)#
(9)
g) Ensure SW2 is backup root switch for CIST VLANs and Instance#1; and root switch for Instance#2 without using "priority" keyword.Note: Please type three commands in the order described above
SW2(config)#
(10)
SW2(config)#
(11)
SW2(config)#
(12)
h) Change the spanning tree mode from the default of PVST+ to MST on two switches:
SW1,2(config)#
(13)
3. Ensure the native vlan is tagged
SW1,2,3,4(config)#
(14)
4. Configure native vlan to vlan 999
SW1,2,3,4(config)#interface range fastethernet0/19 - 24
SW1,2,3,4(config-if-range)#switchport trunk encapsulation dot1q
SW1,2,3,4(config-if-range)#switchport mode trunk
SW1,2,3,4(config-if-range)#
(15)
5. For security reason, only allow traffic from VLANs 10, 20, 30, 40 passing over the trunk links
SW1,2,3,4(config-if-range)#
(16)
Submit
Result: