Cisco Catalyst 4500 Series Software Configuration Guide

62-10
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 62 Configuring Network Security with ACLs
TCAM Programming and ACLs
TCAM Programming and ACLs
You apply three types of hardware resources when you program ACLs and ACL-based features: mapping
table entries (MTEs), profiles, and TCAM value/mask entries. If any of these resources are exhausted,
packets are sent to the CPU for software-based processing.
Note Supervisor Engine 6-E, Supervisor Engine 6L-E, Supervisor Engine 7-E, Supervisor Engine 7L-E, and
Supervisor Engine 8-E automatically manage the available resources. Because masks are not shared on
the supervisor engines, only one programming algorithm exists. No regions exist so region resizing is
not needed.
If you exhaust resources on the supervisor engine, you should consider reducing the complexity of your
configuration.
Note When an interface is in down state, TCAMs are not consumed for RACLs, but are for PACLs.
Layer 4 Operators in ACLs
The following sections provide guidelines and restrictions for configuring ACLs that include Layer 4
port operations:
• Restrictions for Layer 4 Operations, page 62-11
• Configuration Guidelines for Layer 4 Operations, page 62-12
• Using ACLs to Filter TCP Flags and How ACL Processing Impacts CPU, page 62-13
52 PermitProtTunnel Y 0 ControlPktsTwo
53 CaptureCgmp N 440 ControlPktsTwo
55 CaptureIgmp N 0 ControlPktsTwo
0 IgmpPimv1ToCpu N N/A 0 (estimate)
0 IgmpGeneralQueryToCpu N N/A 0 (estimate)
2 IgmpToCpu N N/A 0 (estimate)
3 IgmpPimv2ToCpu N N/A 0 (estimate)
2048 Ipv6MldGeneralQueryCopyToCpu N N/A 0 (estimate)
2050 Ipv6MldGeneralQueryCopyToCpu N N/A 0 (estimate)
2052 Ipv6MldQueryOrReportV1ToCpu N N/A 0 (estimate)
2054 Ipv6MldQueryOrReportV1ToCpu N N/A 0 (estimate)
2056 Ipv6MldReportV2ToCpu N N/A 0 (estimate)
2058 Ipv6MldReportV2ToCpu N N/A 0 (estimate)
2060 Ipv6MldDoneToCpu N N/A 0 (estimate)
2064 Ipv6MldPimv2ToCpu N N/A 0 (estimate)
CamIndex Entry Type Active Hit Count CamRegion

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E