Viewing Statistics
Viewing TCAM Utilization
Cisco Small Business 300 Series Managed Switch Administration Guide  15
2
 
TCAM Rules Per Process 
Process Per Port/
Per Switch
Allocation 
on 
Activation
Process 
Upper 
Limit
TCAM Rules 
Used Up Per 
User Entry
Comments
QoS Advanced 
Mode Rules
Port 6/device No limit 1 or 2 TCAM 
entries per rule.
Access Control 
Rules
Port 6/device No limit 1 or 2 TCAM 
entries per rule.
Protocol Based 
VLAN
Port 0 No limit 1 or 2 Rules are duplicated 
for MAC-based 
VLANs.
MAC Based VLAN Port 0 No limit No limit Rules are duplicated 
for MAC-based 
VLANs.
DHCP Snooping Switch 2/device No limit 8 TCAM entries 
per DHCP 
Snooping rule
IP Source Guard Port 0 No limit 1 TCAM entry 
per IP Source 
Guard entry
ARP Inspection Switch 2/device 128 4 TCAM entries 
per ARP 
Inspection rule
VLAN Rate Limiting Both 0 255 1 Global rule 
per VLAN Rate 
Limit.
An additional rule is 
created for each 
Permit rule on the 
interface.