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582 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
ACL-based rate limiting
16
Syntax: ...dscp-matching <0 – 63>
NOTE
For complete syntax information, refer to “Extended numbered ACL syntax” on page 556.
ACL-based rate limiting
ACL-based rate limiting provides the facility to limit the rate for IP traffic that matches the permit
conditions in extended IP ACLs. This feature is available in the Layer 2 and Layer 3 code.
For more details, including configuration procedures, refer to Chapter 18, “Configuring Traffic
Policies”.
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 18, “Configuring Traffic
Policies”.
NOTE
The terms ACL statistics and ACL counting are used interchangeably in this guide and mean the
same thing.
Using 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 Chapter 25, “Configuring IP Multicast Protocols”.
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.
To enable and view hardware usage statistics, enter commands such as the following:
PowerConnect#show access-list hw-usage on