Allied Telesis management software layer 2+ fast ethernet switches manual Unicast packet rate

Chapter 8: Port Parameter Commands

table. Settings for this parameter are:

yes, on, true, enabled	Activates unknown
	unicast packet rate
	limit on the port. The
	values are equivalent.
no, off, false, disabled	Deactivates unknown
	unicast packet rate
	limit on the port. The
	values are equivalent.

Description

This command sets the maximum number of ingress multicast, broadcast, and unknown unicast packets the switch ports accept each second. Packets exceeding the threshold are discarded. You can enable the rate limiting threshold independently for each packet type. However, the same threshold applies to all packet types.

The RATE parameter sets the packet limit. This limit applies to all the ports. There can be only one packet limit value for the switch. Additionally, the same packet limit applies to the three types of packets that you can filter on.

The other parameters are used to toggle on and off the different filters. A filter applies to all switch ports.

Here is an example. Assume that you set a rate limit of 5,000 packets and you enable multicast and broadcast rate limiting. Each switch port will accept up to 5,000 multicast packets and 5,000 broadcast packets each second. If a port receives more than that of either type, it discards the extra packets. Because the feature was not activated for unknown unicast packets, their number is not restricted.

Examples

The following command sets a rate limit of 40,000 ingress packets and activates broadcast and multicast rate limiting on all switch ports:

set switch port=all rate=40000 bcastratelimiting=enabled mcastratelimiting=enabled

The following command activates unicast rate filtering on all ports without changing the current rate limit:

set switch port=all unkucastratelimiting=enabled

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