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Cisco Bug: CSCur11470 - 4500X running 3.6.0E(Amur) displays PCI warning during boot up process

Last Modified

Jun 04, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

3.6(0)

Description (partial) 

Symptom:
The following PCI warnings are seen during bootup.

[    0.091108] pci 0000:00:00.0: ignoring class b20 (doesn't match header type 01)
[    0.181235] pci 0001:04:00.0: ignoring class b20 (doesn't match header type 01)
[    0.273666] pci 0002:0c:00.0: ignoring class b20 (doesn't match header type 01)

Conditions:
4500X running IOS XE 3.6.0E or lower and upgrading to any release can see this issue. Its been seen in 3.6.X and 3.7.X train.'

This is a common warning message seen at bootup on linux kernels.  There is no operational impact.
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Bug Details Include

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  • Status
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