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

Last Modified

Nov 27, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)

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)

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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