Brocade Communications Systems Brocade ICX 6650 6650 User Manual

ACL statistics

NOTE

Brocade devices support ACL-based rate limiting for inbound traffic. This feature is not supported for 
outbound traffic.

For more details, including configuration procedures, refer to 

.

ACL statistics

ACL statistics is a mechanism for counting the number of packets and the number of bytes per 
packet to which ACL filters are applied.

To see the configuration procedures for ACL statistics, refer to 

NOTE

The terms ACL statistics and ACL counting are used interchangeably in this guide and mean the 
same thing.

ACLs to control multicast features

You can use ACLs to control the following multicast features:

•

Limit the number of multicast groups that are covered by a static rendezvous point (RP)

•

Control which multicast groups for which candidate RPs sends advertisement messages to 
bootstrap routers

•

Identify which multicast group packets will be forwarded or blocked on an interface

For configuration procedures, refer to Brocade ICX 6650 IP Multicast Configuration Guide.

Enabling and viewing hardware usage statistics for an ACL

The number of configured ACL rules can affect the rate at which hardware resources are used. You 
can use the show access-list hw-usage on command to enable hardware usage statistics, followed 
by the show access-list access-list-id command to determine the hardware usage for an ACL. To 
gain more hardware resources, you can modify the ACL rules so that it uses less hardware 
resource. 

NOTE

The hardware usage statistics will only be shown for IPv4 ACLs.

To enable and view hardware usage statistics, enter commands such as the following:

Brocade# show access-list hw-usage on 
Brocade# show access-list 100
Extended IP access list 100 (hw usage : 2)
deny ip any any (hw usage : 1

The first command enables hardware usage statistics, and the second command displays the 
hardware usage for IP access list 100.