Connectivity Guide

Table Of Contents
The ACL manager does not notify the ACL agent in the following cases:
The ACL VLAN group is created.
The ACL VLAN group is deleted and it does not contain VLAN members.
The ACL is applied or removed from a group and the ACL group does not contain a VLAN member.
The description of the ACL group is added or removed.
Guidelines for Configuring ACL VLAN Groups
Keep the following points in mind when you configure ACL VLAN groups:
The interfaces where you apply the ACL VLAN group function as restricted interfaces. The ACL VLAN group name identifies
the group of VLANs that performs hierarchical filtering.
You can add only one ACL to an interface at a time.
When you attach an ACL VLAN group to the same interface, validation performs to determine whether the ACL is applied
directly to an interface. If you previously applied an ACL separately to the interface, an error occurs when you attempt to
attach an ACL VLAN group to the same interface.
The maximum number of members in an ACL VLAN group is determined by the type of switch and its hardware capabilities.
This scaling limit depends on the number of slices that are allocated for ACL CAM optimization. If one slice is allocated, the
maximum number of VLAN members is 256 for all ACL VLAN groups. If two slices are allocated, the maximum number of
VLAN members is 512 for all ACL VLAN groups.
The maximum number of VLAN groups that you can configure also depends on the hardware specifications of the switch.
Each VLAN group is mapped to a unique ID in the hardware. The maximum number of ACL VLAN groups supported is 31.
Only a maximum of two components (iSCSI counters, Open Flow, ACL optimization, and so on) can be allocated virtual flow
processing slices at a time.
Port ACL optimization is applicable only for ACLs that are applied without the VLAN range.
If you enable the ACL VLAN group capability, you cannot view the statistical details of ACL rules per VLAN and per interface.
You can only view the counters per ACL only using the show ip accounting access list command.
Within a port, you can apply Layer 2 ACLs on a VLAN or a set of VLANs. In this case, CAM optimization is not applied.
To enable optimization of CAM space for Layer 2 or Layer 3 ACLs that are applied to ports, the port number is removed as
a qualifier for ACL application on ports, and port bits are used. When you apply the same ACL to a set of ports, the port
bitmap is set when the ACL flow processor (FP) entry is added. When you remove the ACL from a port, the port bitmap is
removed.
If you do not attach an ACL to any of the ports, the FP entries are deleted. Similarly, when the same ACL is applied on a set
of ports, only one set of entries is installed in the FP, thereby saving CAM space. Enable optimization using the optimized
option in the ip access-group command. This option is not valid for VLAN and link aggregation group (LAG) interfaces.
Configuring ACL VLAN Groups and Configuring FP
Blocks for VLAN Parameters
This section describes how to optimize CAM blocks by configuring ACL VLAN groups that you can attach to VLAN interfaces. It
also describes how to configure FP blocks for different VLAN operations.
Configuring ACL VLAN Groups
You can create an ACL VLAN group and attach the ACL with the VLAN members. The optimization is applicable only when you
create an ACL VLAN group.
1. Create an ACL VLAN group.
CONFIGURATION mode
Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)
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