Chapter 4
| System Management Commands
System Status
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show access-list
tcam-utilization
This command shows utilization parameters for TCAM (Ternary Content
Addressable Memory), including the number policy control entries in use, the
number of free entries, and the overall percentage of TCAM in use.
Command Mode
Privileged Exec
Command Usage
Policy control entries (PCEs) are used by various system functions which rely on
rule-based searches, including Access Control Lists (ACLs), IP Source Guard filter
rules, Quality of Service (QoS) processes, or traps.
For example, when binding an ACL to a port, each rule in an ACL will use two PCEs;
and when setting an IP Source Guard filter rule for a port, the system will also use
two PCEs.
Example
Console#show access-list tcam-utilization
Total Policy Control Entries : 6144
Free Policy Control Entries : 6128
Entries Used by System : 16
Entries Used by User : 0
TCAM Utilization : 0.26%
Console#
show memory This command shows memory utilization parameters, and alarm thresholds.
Command Mode
Normal Exec, Privileged Exec
Command Usage
This command shows the amount of memory currently free for use, the amount of
memory allocated to active processes, and the total amount of system memory.
show users Shows all active console and Telnet sessions, including user
name, idle time, and IP address of Telnet clients
NE, PE
show version Displays version information for the system NE, PE
show watchdog Shows if watchdog debugging is enabled PE
watchdog software Monitors key processes, and automatically reboots the
system if any of these processes are not responding
correctly
PE
Table 11: System Status Commands (Continued)
Command Function Mode
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