Monday, November 8, 2010

Troubleshooting High CPU on Cisco ASA

show cpu
show processes cpu-usage

**This will tell us which process is consuming the most CPU.

**Dispatch Unit is the "packet processing" process of the ASA. If the Dispatch Unit is showing high utilization, take a packet capture (pcap) from the ASA and view it in Wireshark to see what traffic is causing the most load on the ASA.

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Enable CPU Profiling (to provide to Cisco TAC)
cpu profile activate 5000

Cisco ASA 8.2+:
show cpu profile dump

Pre 8.2:
show cpu profile BlogBooster-The most productive way for mobile blogging. BlogBooster is a multi-service blog editor for iPhone, Android, WebOs and your desktop

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