Status and Statistics
Viewing TCAM Utilization
18 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)
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•EAP Request/ID Frames Transmitted—EAP Req/ID frames transmitted by
the port.
•EAP Request Frames Transmitted—EAP Request frames transmitted by
the port.
•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 recei ved EAPOL fra me.
•Last EAPOL Frame Source—Source MAC address attached to the most
recently recei ved EAPOL fra me.
To clear statistics counters:
•Click Clear Interface Counters to clear the selected interfaces counters.
•Click Clear All Interface Counters to clear the counters of all interfaces.
Viewing TCAM Utilization
The device architecture uses a Ternary Content Addressable Memory (TCAM) to
support packet actions in wire speed.
TCAM TCAM holds the rules produced by applications, such as ACLs (Access
Control Lists), Quality of Service (QoS), IP Routing and user-created rules.
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 following fields are displayed for SG500X/SG500XG devices and for Sx500
devices in Layer 3 system mode and when the device is part of a stack (per unit):
•Unit No—Unit in stack for which TCAM utilization appears. This is not
displayed when the device is in standalone mode.
•Maximum TCAM Entries for IPv4 and IPv6 Routing—Maximum TCAM
entries available.