Chapter 3 Lab A - Securing Administrative Access Using AAA and ...

CCNPv6 TSHOOTSection 2 Troubleshooting Reference InformationGeneral Troubleshooting ProcessAs a general guideline, you can use the following general troubleshooting process described in the course.1. Define the problem (symptoms).2. Gather information.3. Analyze the information.4. Propose a hypothesis (possible cause).5. Test the hypothesis.6. Eliminate or accept the hypothesis.7. Solve the problem.8. Document the problem.Command SummaryThe table lists useful commands for this lab. The sample output is shown on following pages.Commandshow ip dhcp snoopingdebug ip dhcp snooping packetdebug ip dhcp server packetshow ip eigrp neighborssh ip eigrp interfacesshow ip eigrp interfaces detaildebug eigrp packetsKey Information DisplayedDisplays snooping status (enabled or not) and, ifenabled, on which VLANs. Also shows which interfacesare trusted.Displays real-time information on DHCP snooping activityand the client/server exchange.Displays real-time information on DHCP on theclient/server exchange from the server perspective.Displays the IP address of EIGRP neighbors and theinterface on which they were learned.Displays all interfaces participating in EIGRP for each ASand the number of peers associated with each interface.Displays all interfaces participating in EIGRP for each ASalong with the number of peers, hello interval, and thetype of authentication (if configured).Displays real-time information on types of EIGRPpackets exchange, which include authenticationinformation.All contents are Copyright © 1992–2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 8 of 17