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Updated:December 10, 2018
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
View Ternary Content Addressable Memory (TCAM) Utilization on the 300 Series Managed Switches
Ternary Content Addressable Memory (TCAM) is used by the switch to store rules various applications such as Quality of Service (QoS), Access Control Lists (ACLs), IP route tables, and VLANs. The way TCAM stores these rules in memory is different than normal memory RAM storage, where the IOS uses a memory address to search for specific data. TACM instead, uses the data first and then it looks for the respective memory location. In this way the switch searches for these rules faster, which improves overall performance. The 300 Series Managed Switches can hold 512 rules. An enabled application can use up a small portion of the TCAM rules. Each rule entry for an application will use up 1 or 2 TCAM rules.
You can check the TCAM utilization on the 300 Series Managed Switches to look at the percentage of how much TCAM rules have been utilized. If you implement many applications on your switch, you need to make sure the switch does not consume all of the available TCAM rules. This article explains how to view TCAM utilization on the 300 Series Managed Switches.
• SF/SG 300 Series Managed Switches
View TCAM Utilization
Step 1. Log in to the web configuration utility and choose Status and Statistics > TCAM Utilization. The TCAM Utilization page opens.
Note: The TCAM Utilization field displays the TCAM utilization as a percentage of the TCAM rules used out of the maximum 512 rules allowed.
Note: The Max TCAM Entries field displays the total amount of TCAM available entries.