I'm currently working on updating the Vol 2 Troubleshooting labs. I'm changing a good portion of the tickets and increasing the difficultly level of each lab. So if you've done the Vol 2 Troubleshooting labs in the past it'll benefit you to go back through them. I'm also adding in a lot more layer 2, QoS, MPLS VPN and multicast related tickets. I hope to have this finished and uploaded sometime late next week or early the following week.