[WHICT] Configuring Primary and Backup Root Bridges

"What's Happen In Class Today"

Topic: Lab 3-1 Configuring Primary and Backup Root Bridges

Log Date: Sept 11, 2007

Venue: Room 3-2, E-2, Inixindo, Jakarta

Presented by Andi Maulana

Reported by Arnastya I S

Legend:

[ASWx = Access Switch X; ASWy = Access Switch Y; DSWx = Distribution Switch X; DSWy = Distribution Switch Y]

Comment:

Task 1: Investigate Access Switch Convergence After Link Failure with 802.1D STP

Read the table and the instructions

Step 1: Read the table in your Lab Guide. Determine the primary root Building Distribution switches for the VLANs

Step 2: Implementing portfast in Access Switch interfaces

ASW1#conf t

ASW1(config)#interface fastethernet 0/1

ASW1(config-if)#spanning-tree portfast

ASW1(config-if)#interface fastethernet 0/2

ASW1(config-if)#spanning-tree portfast

Step 3:

DSW1(config)#spanning-tree vlan 11 root primary

DSW1(config)#spanning-tree vlan 14 root primary

Step 4:

DSW1(config)#spanning-tree vlan 1 root primary

Step 5: Verify DSWx with the show spanning-tree vlan vlan-id command

DSW1#show spanning-tree vlan 1

....

DSW1#show spanning-tree vlan 11

....

DSW1#show spanning-tree vlan 14

....

Step 6: Verify ASWx with the show spanning-tree vlan vlan-id command

ASW1#show spanning-tree vlan 1

....

ASW1#show spanning-tree vlan 11

....

ASW1#show spanning-tree vlan 14

....

Step 7: Verify DSWx with the show running-config command

Task 2: Configure Spanning Tree Backup Root Switch for VLANs on Distribution Switches

Step 1: Read the table in your Lab Guide. Determine the secondary root Building Distribution switches for the VLANs

Step 2:

DSW2(config)#spanning-tree vlan 12 root secondary

DSW2(config)#spanning-tree vlan 13 root secondary

Step 3:

DSW2(config)#spanning-tree vlan 1 root secondary

Step4 : Verify the secondary root switch

Step 5: Verify DSWx with the show spanning-tree vlan vlan-id command

DSW2#show spanning-tree vlan 1

....

DSW2#show spanning-tree vlan 12

....

DSW2#show spanning-tree vlan 13

....

Step 6: Verify ASWx with the show spanning-tree vlan vlan-id command

ASW1#show spanning-tree vlan 1

....

ASW1#show spanning-tree vlan 12

....

ASW1#show spanning-tree vlan 13

....

Step 7: Verify DSWx with the show running-config command

Task 3: Verify Spanning Tree for VLANs on the Distribution Switches

Step1 – Step 8:

Let you verify all