Viewing Tcam Utilization - Cisco 500 series Administration Manual

Viewing Statistics

Viewing TCAM Utilization

Viewing TCAM Utilization
Cisco 500 Series Stackable Managed Switch Administration Guide
• Invalid EAPOL Frames Received—Unrecognized EAPOL frames received
on this port.
• EAP Length Error Frames Received—EAPOL frames with an invalid Packet
Body Length received on this port.
• Last EAPOL Frame Version—Protocol version number attached to the most
recently received EAPOL frame.
• Last EAPOL Frame Source—Source MAC address attached to the most
recently received EAPOL frame.
To clear statistics counters:
• Click Clear Interface Counters to clear the selected interface's counters.
• Click Clear All Interface Counters to clear the counters of all interfaces.
The switch architecture uses a TCAM (Ternary Content Addressable Memory) to
support packet actions in wire speed.
TCAM holds the rules produced by other applications, such as ACLs (Access
Control Lists) and Quality of Service (QoS) and user-created rules. The maximum
number of TCAM rules that can be allocated by all applications on the device is
512
Some applications allocate rules upon their initiation. Additionally, processes that
initialize during system boot use some of their rules during the startup process.
To view TCAM utilization, click Status and Statistics > TCAM Utilization.
The TCAM Utilization page is displayed, showing the percentage of TCAM
utilization per system and per stack unit.
TCAM Rules
To view how the allocation among various processes can be changed (for the 500
series), see the TCAM Allocation section.
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