C
HAPTER
20
| System Management Commands
System Status
– 708 –
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 : 1024
Free Policy Control Entries : 836
Entries Used by System : 188
Entries Used by User : 0
TCAM Utilization : 18.35%
Console#
show memory This command shows memory utilization parameters.
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.
EXAMPLE
Console#show memory
Status Bytes %
------ ---------- ---
Free 42348544 31
Used 91869184 69
Total 134217728
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 49: System Status Commands (Continued)
Command Function Mode
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