Chapter Sixteen. Advanced Troubleshooting
This chapter covers the following official 200-101 ICND2 and 200-120 CCNA exam topics:
► Troubleshoot and resolve spanning tree operation issues.
► Troubleshoot and resolve routing issues.
► Troubleshoot and resolve OSPF problems.
► Troubleshoot and resolve EIGRP problems.
► Troubleshoot and resolve inter-VLAN routing problems.
► Troubleshoot and resolve WAN implementation issues.
► Monitor NetFlow statistics.
► Troubleshoot EtherChannel problems.
When everything is working, and traffic is moving successfully between source and destination, there isn’t too much troubleshooting to be done. However, when the packets don’t make it, you should ask the following questions:
► Is the physical connectivity ...
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