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As some of you have experienced in the last few weeks, the Proctor Labs wireless racks have been shut down on two different occasions. First, let me apologize for this inconvenience for those of you who had scheduled time to use them. I understand what that time means to you. Here is a brief explanation of what happened and what steps have been taken to remedy that situation. Both outages were due to network loops, one caused by a bridge connection and the other probably by a partial Etherchannel configuration. Due to the way the VPN network was set up, these loops propagated to an edge router, causing an outage for all of Proctor Labs. Until the causes could be determined, the wireless racks were shut down in both cases. In the last instance, the racks were shutdown until a more permanent solution could be implemented. In order to prevent this issue in the future, the Internet connection has been moved from CAT2 Fa0/1 to an interface on the CME router. This does a few things: 1) Any network storms will affect that one pod, including the CME router. If you experience extreme slowness in managing the pod after configuring a device, check to see if there is high CPU utilization (if you can access devices.) If you are unable to reconfigure the device, reboot it (or the switch to which it is attached in the case of the access points.) If you saved the configuration, and thus a reboot will not fix the problem, contact Proctor Labs Support at [email protected]. 2) All of the Workbook Volume 1 initial configurations have been changed, where appropriate, to reflect the fact that the default route should go to the CME IP address of 10.10.210.20. There are many references to the 10.10.205.20 address in the workbook, which is also on the CME router. But, the first IP address is the one to reference. 3) The topology diagrams are being updated and should be posted shortly. 4) The Detailed Solution Guide for version 1 will not show these changes at this time. The biggest difference is in Labs 2.4 and 2.5. Think like a proctor - how could you rewrite the requirement to match the current setup? Also, if you haven't heard, we are in the process of converting over two more racks for the CCIEW version 2. We'll send out a note when those are ready to go. Take care. Jason Boyers - CCIE #26024 (Wireless) Senior Technical Instructor - IPexpert, Inc. Mailto: <mailto:[email protected]> [email protected]
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