Cisco Cisco Catalyst 4506-E Switch Troubleshooting Guide
1
RACL = router ACL
2
L3 = Layer 3
3
SVI = switched virtual interface
4
VACL = VLAN ACL
5
PACL = port ACL
6
L2 = Layer 2
7
IPv4 = IP version 4
Catalyst 4500 ACL and QoS Hardware Programming
Architecture
Architecture
The Catalyst 4500 TCAM has the following number of entries:
32,000 entries for security ACL, which is also known as feature ACL
32,000 entries for QoS ACL
For both security ACL and QoS ACL, the entries are dedicated in the following way:
16,000 entries for the input direction
16,000 entries for the output direction
Figure 3
shows the TCAM entry dedication. See the
Types of TCAM
section for more information
about TCAMs.
Table 2
shows the ACL resources that are available for various Catalyst 4500 Supervisor Engines and
switches.
VACL
4
filter
command)
command)
a VLAN or that are
bridged within a
VLAN
bridged within a
VLAN
Directionless
PACL
5
L2
6
port or
L2 channel
All IP traffic and
non-IPv4
non-IPv4
7
traffic
(via MAC ACL)
Inbound or
outbound
outbound
Table 2 – Catalyst 4500 ACL Resources on Various
Supervisor Engines and Switches
Supervisor Engines and Switches
TCAM
Feature
QoS TCAM
Page 3 of 16
Cisco - ACL and QoS TCAM Exhaustion Avoidance on Catalyst 4500 Switches
10/18/2005
http://www.cisco.com/warp/customer/473/tcam_cat_4500.html