Brocade Communications Systems 804 manual Ratelim, Defspeed, 124

B ratelim

ratelim

Enables or disables target rate limiting support on the HBA side.

Synopsis bcu ratelim --enable<port_id> bcu ratelim --disable<port_id> bcu ratelim --query<port_id>

bcu ratelim --defspeed<port_id> [<124>]

Description The target rate limiting feature is used to minimize congestion at the HBA port due to a slow drain device operating in the fabric at a slower speed. A remote port’s operating speed is determined from the fabric. Traffic destined to the remote port is limited to its current operating speed.

The default rate limit is 1 Gbps. Target rate limiting (TRL) is supported only when the HBA port is connected to the fabric. Therefore, TRL is not supported when the port is directly connected with another device.

Possible port identifiers could be any one of the following:

•Adapter ID

•Port ID

•Port WWN

•Port name (user assigned)

•Port hardware path

NOTE

You must first enter the bcu port --disable <port_id> command, followed by the port --enablecommand, before the ratelim --enableor ratelim --disablecommands take effect.

Operands	--enable	Enables target rate limiting, if currently disabled.
	port_id	Specifies the ID of the port you want to enable.
	--disable	Disables target rate limiting on the HBA, if currently enabled.
	port_id	Specifies the ID of the port you want to disable.
	--query	Queries the target rate limiting details.
	port_id	Specifies the ID of the port for which you want to display information.
	--defspeed	Sets the default target rate limiting speed. The default TRL speed must be
		supported and less than the maximum speed at which the card can operate.
	port_id	Specifies the ID of the port on which you want to set the speed.
	124	Sets the default target rate limiting speed on the HBA. Options are 1 Gbps, 2
		Gbps, and 4 Gbps
See Also	None

156	Brocade Adapters Administrator’s Guide
	53-1001583-01