Lab Objective:
The focus of this lab is to understand EtherChannel (LACP, PAgP) and Multiple Spanning Tree (MST) implementation and configuration in Cisco IOS Catalyst switches.
Lab Topology:
The lab network topology is illustrated below:
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IMPORTANT NOTE If you are using the www.howtonetwork.net racks, please begin each and every lab by shutting down all interfaces on all switches and then manually re-enabling only the interfaces that are illustrated in this topology. |
Task 1
Disable VTP on all switches. All switches should support the configuration, modification and deletion of VLANs.
Task 2
Configure EtherChannel trunks on the switches illustrated in the topology. Only switches DLS1 and DLS2 should actively initiate channel establishment; switches ALS1 and ALS2 should be configured as passive links that will should not actively attempt to establish an EtherChannel. The EtherChannels should be configured as follows:
- The two ports between DLS1 and DLS2 belong to channel group 1 and use mode on
- The two ports between DLS1 and ALS1 belong to channel group 2 and use LACP
- The two ports between DLS1 and ALS2 belong to channel group 3 and use PAgP
- The two ports between DLS2 and ALS1 belong to channel group 4 and use LACP
- The two ports between DLS2 and ALS2 belong to channel group 5 and use PAgP
Task 3
Following the EtherChannel configuration, protect the switched network from any future misconfigurations by ensuring misconfigured EtherChannels are automatically disabled. Additionally, configure the switches to automatically bring up EtherChannels that were disabled due to misconfigurations after 10 minutes.
Task 4
Configure VLANs 100, 200, 300, 400, 500, 600, 700, and 800 all switches. Use the default VLAN names or specify your own names, if so desired.
Task 5
Selecting your own name and revision number, configure Multiple STP as follows:
- VLANs 100 and 200 will be mapped to MST Instance # 1: Switch DLS1 should be root
- VLANs 300 and 400 will be mapped to MST Instance # 2: Switch DLS2 should be root
- VLANs 500 and 600 will be mapped to MST Instance # 3: Switch ALS1 should be root
- VLANs 700 and 800 will be mapped to MST Instance # 4: Switch ALS2 should be root
Task 6
Configure Spanning Tree so that interface cost values appear to the 802.1t (long) version