Chapter 4
| System Management Commands
System Status
– 115 –
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
Pool capability code:
AM - MAC ACL, A4 - IPv4 ACL, A6S - IPv6 Standard ACL,
A6E - IPv6 extended ACL, DM - MAC diffServ, D4 - IPv4 diffServ,
D6S - IPv6 standard diffServ, D6E - IPv6 extended diffServ,
AEM - Egress MAC ACL, AE4 - Egress IPv4 ACL,
AE6S - Egress IPv6 standard ACL, AE6E - Egress IPv6 extended ACL,
DEM - Egress MAC diffServ, DE4 - Egress IPv4 diffServ,
DE6S - Egress IPv6 standard diffServ,
DE6E - Egress IPv6 extended diffServ, W - Web authentication,
I - IP source guard, I6 - IPv6 source guard, C - CPU interface,
L - Link local, Reserved - Reserved, ALL - All supported function,
Unit Device Pool Total Used Free Capability
---- ------ ---- ----- ----- ----- ----------------------------------------
1 0 0 128 0 128 A6S D6S
1 0 1 128 0 128 A6E D6E C L
1 0 2 128 0 128 A4 D4
1 0 3 128 0 128 AM DM
1 0 4 128 128 0 I
1 0 5 128 128 0 Reserved
1 0 6 64 64 0 C
1 0 7 128 128 0 I6
1 0 8 128 128 0 W
1 0 9 128 0 128 AE6S DE6S
1 0 10 128 0 128 AE6E DE6E
1 0 11 128 0 128 AE4 DE4
1 0 12 128 0 128 AEM DEM
Console#
Table 13: show access-list tcam-utilization - display description
Field Description
Pool Capability Code Abbreviation for processes shown in the TCAM List.
Unit Stack unit identifier.
Device Memory chip used for indicated pools.
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