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The PIX 500 series Firewall running software version 7.x displays high CPU usage (75 percent) for a traffic throughput of 140 Mbs

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Core issue

For more information, refer to Cisco bug ID CSCsc68575.

A PIX running version 7.0.2 recently upgraded from version 6.3.4 shows 75 percent CPU usage for a traffic throughput of 140 Mbs. When the traffic load is reduced to 100 Mbs, the CPU usage falls to around 50 percent.

Resolution

As a workaround, download and upgrade the software version to any one of these versions:

  • 7.2(1)
  • 7.1(2)
  • 7.0(5)
  • 7.1(1.1)
  • 7.2(0.30)
  • 7.0(4.6)