![]() Refer to Troubleshooting High CPU Utilization on Cisco Routers for more information on how to handle high CPU loads. Verify that you have ample CPU available before you begin the debugs. But, doing the same debug on an AS5800 with full E1 configuration can probably generate so much input that it may hang and stop responding.īefore debugging, look at your CPU load with the show processes cpu command. For example, if you have a router with one basic rate interface (BRI), debug isdn q931 probably will not harm the system. Hence, if logging is enabled, the access server can intermittently freeze as soon as the console port gets overloaded with log messages.īefore you start a debug command, always consider the output that this command will generate and the amount of time this can take. In general, it is recommended that these commands only be used under the direction of your router technical support representative when troubleshooting specific problems.Įnabling debugging can disrupt operation of the router when internetworks are experiencing high load conditions. If your network is live, make sure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. This document is not restricted to specific software and hardware versions. Prerequisites RequirementsĬisco recommends that you have knowledge of these topics:Ĭonnecting to the router using the console, aux and vty ports The output from debug privileged EXEC commands provides diagnostic information that include a variety of internetworking events relating to protocol status and network activity in general. Refer to the appropriate Cisco Debug Command Reference documentation for information on specific debug commands. Note: This document does not explain how to use and interpret specific debug commands and outputs. This page provides some general guidelines on using the debugs available on Cisco IOS ® platforms, as well as examples for properly using the debug ip packet command and conditional debugging.
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