Friday, February 22, 2019

Cisco C9300-48UXM DHCP snooping bug

Hey folks!

Just wanted to spread the word on bug CSCvn15912. It looks like Cisco's document isn't published just yet but our team got caught by it and wasted many hours troubleshooting.

There were some reports that the code release 16.6.4 would resolve a bug where a C9300 becomes near unresponsive when enabling the DHCP snooping feature on the switch. We are running code 16.6.4 and the issue persists. TAC has reached out to us to let us know that a fix will be released in 16.6.6/16.9.3

ETA for 16.6.x is mid-April, ETA for 16.9.3 is end of March.



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