09-28-2010 08:35 PM - edited 03-06-2019 01:13 PM
Hi All,
We have couple of WS-C3750V2-48PS running on Version 12.2(52)SE stacked .
From last few days I observed that there are lot of logs related with platform unicast:
%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
Could you please provide what needs to be done. The current sdm template is desktop default
Thanks in advance
09-28-2010 08:52 PM
Understanding and Configuring Switching Database Manager on Catalyst 3750 Series Switches
http://www.cisco.com/en/US/products/hw/switches/ps5023/products_tech_note09186a00801e7bb9.shtml
09-28-2010 09:53 PM
This indicates that the switch is hitting its TCAM limitation with the routing table.
In order to change your sdm template to "routing" please issue the following command from the configuration terminal. -sdm prefer routing This should allocate more resources for layer 3 routing to the TCAM and you should not get any more of those error messages.
11-05-2010 03:55 AM
Hi,
Did you find a solution to your problem ?
Our of my customer is observing the same issue. Many route with /32 mask cannot be programmed
in TCAM and we cannot what happens.
Thanks in advance for your feedback.
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