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Cisco Bug: CSCvu61704 - ASA high CPU with intel_82576_check_link_thread impacting on overall unit performance

Last Modified

Sep 11, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.6(4.34) 9.8(3)

Description (partial)

Symptom:
High CPU is experienced only on process intel_82576_check_link_thread leading to improper operation of the device.

For instance:

------------------ show process cpu-usage sorted non-zero ------------------

Hardware:   ASA5545
Cisco Adaptive Security Appliance Software Version 9.6(4)34
ASLR enabled, text region 7ff98dfed000-7ff99207ef5c
PC         Thread       5Sec     1Min     5Min   Process
0x00007ff98f2ee7fa   0x00007ff9366e0d30   100.0%   100.0%   100.0%   intel_82576_check_link_thread


This may result on impacts of control plane processes operation such as:

> Management access to the box via SSH or ASDM
> Failover operation

Conditions:
First seen on:

> ASA55XX device installed with expansion module Intf. Card 6-port GE SFP
> ASA running version 9.6.4(34)
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Bug Details Include

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