Rate Limiting; Displaying Traffic Reduction - Dell PowerConnect B-RX Configuration Manual

NP based multicast, broadcast, and unknown-unicast

rate limiting

NOTE
Beginning with release 02.7.00, the multicast limit, broadcast limit, and the unknown-unicast limit
commands have been superseded with the multicast rate-limit, broadcast rate-limit, and the
unknown-unicast rate-limit commands. You must reconfigure the rate limiting when upgrading to
the 02.7.00 Multi-Service Ironware.
Beginning with release 02.7.00 of the Multi-Service IronWare, NP based Multicast, Broadcast, and
Unknown-Unicast rate limiting is supported. This feature allows hardware NP based Multicast,
Broadcast, and Unknown-Unicast rate limiting for both CPU based flooding and hardware based
flooding.
To enable multicast rate-limiting on a specific port, enter a command such as the following.
BigIron RX (config)# multicast rate-limit 1000000 1 np 2/2
Syntax: [no] multicast rate-limit <avg-rate> <max-burst> np [slot/port | all]
To enable Broadcast rate-limiting on a specific port, enter a command such as the
following.
BigIron RX (config)# broadcast rate-limit 1000000 1 np 3/2
Syntax: [no] broadcast rate-limit <avg-rate> <max-burst> np [slot/port | all]
To enable unknown unicast rate-limiting on a specific port, enter a command such
as the following:
BigIron RX (config)# unknown-unicast rate-limit 1000000 1 np 4/2
Syntax: [no] unknown-unicast rate-limit <avg-rate> <max-burst> np [slot/port | all]
Use the no parameter to disable np rate limiting.
The <avg-rate> is entered in Kbits/sec. Possible values are from 1-429467295. The default value
is 4294967295.
The <max-burst> parameter specifies the total number bits that can pass during a burst. Possible
values are from 1-429467295. The default value is 4294967295.
The np parameter specifies the rate limit per network processor.
The slot/port specifies the interface module and port to be rate limited.
The all parameter specifies that you want all the ports to be rate limited.
NOTE
When you specify default values for both average rate and burst size, the values will not be displayed
in the show running configuration output.

Displaying traffic reduction

The show rate-limit command displays the rate limiting policies configured on the ports. For
example.
BigIron RX Series Configuration Guide
53-1001986-01
NP based multicast, broadcast, and unknown-unicast rate limiting
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