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PowerConnect B-Series FCX Configuration Guide 615
53-1002266-01
ACL-based rate limiting using traffic policies
18
PowerConnect(config)#interface ethernet 5
PowerConnect(config-if-e5)#ip access-group 101 in
PowerConnect(config-if-e5)#exit
The previous commands configure a fixed rate limiting policy that allows port e5 to receive a
maximum traffic rate of 100 kbps. If the port receives additional bits during a given one-second
interval, the port drops the additional inbound packets that are received within that one-second
interval.
Syntax: [no] traffic-policy <TPD name> rate-limit fixed <cir value> exceed-action <action> [count]
Syntax: access-list <num> permit | deny.... traffic policy <TPD name>
Syntax: [no] ip access-group <num> in
NOTE
For brevity, some parameters were omitted from the access-list syntax.
The software allows you to add a reference to a non-existent TPD in an ACL statement and to bind
that ACL to an interface. The software does not issue a warning or error message for non-existent
TPDs.
Use the no form of the command to delete a traffic policy definition. Note that you cannot delete a
traffic policy definition if it is currently in use on a port. To delete a traffic policy, first unbind the
associated ACL.
The traffic-policy <TPD name> parameter is the name of the traffic policy definition. This value can
be eight or fewer alphanumeric characters.
The rate-limit fixed <cir value>parameter specifies that the traffic policy will enforce a strict
bandwidth.The <cir value> variable is the committed information rate in kbps. This value can be
from 64 through 1,000,000 Kbps.
The exceed-action <action> parameter specifies the action to be taken when packets exceed the
configured committed information rate (CIR) value. Refer to “Specifying the action to be taken for
packets that are over the limit” on page 617.
The count parameter is optional and enables ACL counting. Refer to “ACL statistics and rate limit
counting” on page 619.
Configuring ACL-based adaptive rate limiting
NOTE
ACL-based adaptive rate limiting is supported on PowerConnect B-Series FCX devices.
Use the procedures in this section to configure ACL-based adaptive rate limiting. Before configuring
this feature, see what to consider in “Configuration notes and feature limitations” on page 612.
Table 108 lists the configurable parameters for ACL-based adaptive rate limiting.