Brocade Communications Systems 415 - Manual (Page 170)

156 Brocade Adapters Administrator’s Guide
53-1001583-01
ratelim
B
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> [<1|2|4>]
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 --enable
command, before the ratelim --enable or ratelim --disable commands 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.
1|2|4 Sets the default target rate limiting speed on the HBA. Options are 1 Gbps, 2
Gbps, and 4 Gbps
See Also None