Brocade Communications Systems 6650 manual ACL statistics, ACLs to control multicast features

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 Chapter 5, “ACL-based Rate Limiting”.

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 Chapter 5, “ACL-based Rate Limiting”.

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-listhw-usage on command to enable hardware usage statistics, followed by the show access-listaccess-list-idcommand 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.

118	Brocade ICX 6650 Security Configuration Guide
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