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Cisco Bug: CSCuq18992 - Catalyst 4500 error message "%C4K_CHASSIS-3-MUXBUFFERSEEPROMREADFAILED:"

Last Modified

Mar 17, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)

On a Catalyst 4500 switch using a 4510R+E chassis the following error messages could be seen.


Related Community Discussions

CSCuv04312 - WS-C4510R-E, WS-C4507R-E mux buffer failure
Hello, 20% of our chassis have been impacted by this defect, and replacing the whole chassis is really painful... Question #1 : if the defect is the limited to the mux-buffer module (WS-X4590-E), would it be possible to replace only this module , as described here : or here : ...
Latest activity: Aug 02, 2017
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