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%PLATFORM_UCAST-4-PREFIX: One or more, more specific prefixes could not be programmed into TCAM and are being covered by a less specific prefix, and the packets may be software forwarded

Hello - We are using a 2960 XR as DHCP server for our guest wireless network and recently increase our scope because we were running out of ip addresses.  After doing this we began receiving the above message and users are complaining of sluggish internet perfomrace.  I have read about changing the SDM template but it seems this is related to routing. We are using this switch only as DHCP server and are not routing at all. My question is if I change the SDM template to "SDM prefer VLAN" would that help my issue?  This would be only temporary until we get a more permanent solution. Thanks in advance. Frank

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Hall of Fame Expert

Hi,

Have a look at this link.  There is a bug associated with this error message. The 2960x is not listed but it may still apply to your platform.

Open a ticket with TAC and have them analyze the error message.

https://quickview.cloudapps.cisco.com/quickview/bug/CSCuv79324

 

HTH

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