Status and Statistics
Viewing TCAM Utilization[
17 Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3
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• 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 interfaces counters.
• Click Clear All Interface Counters to clear the counters of all interfaces.
Viewing TCAM Utilization[
The device architecture uses a TCAM (Ternary Content Addressable Memory) to
support packet actions in wire speed.
TCAM holds the rules produced by applications, such as ACLs (Access Control
Lists), Quality of Service (QoS), IP Routing and user-created rules. The maximum
number of TCAM rules that can be allocated by all applications on the device is
2048 for Sx500 devices and 3096 for SG500X/ESW2-550X devices.
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 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.
• IPv4 Routing
- In Use—Number of TCAM entries used for IPv4 routing.
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