Configuration Guide User guide

FastIron Configuration Guide 595
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Dynamic buffer allocation for FCX, FWS, and ICX devices
3. Configure the port buffers. Port buffer sets the maximum buffer limit for the ports. The
maximum limit depends on the hardware device. Port buffer limits of different platforms are
listed in the section “Buffer and descriptor maximum and default allocation values” on
page 596. To configure the port buffers for the user-configurable buffer profile named
“profile1”, enter the following command at the profile configuration level.
Brocade(qd-profile-profile1)# profile-config port-buffer 8000
Syntax: profile-config port-buffer <decimal>
The <decimal> variable refers to the number of buffers.
4. Configure the port descriptors. Port descriptors set the maximum descriptor limit for the ports.
The maximum limit of port descriptors depends on the hardware device. Port descriptor limits
of different platforms are listed in “Buffer and descriptor maximum and default allocation
values” on page 596. To configure the port descriptors for the user-configurable buffer profile
named “profile1”, enter the following command at the profile configuration level.
Brocade(qd-profile-profile1)# profile-config port-descriptor 8000
Syntax: profile-config port-descriptor <decimal>
The <decimal> variable refers to the number of descriptors.
5. Configure the queue buffers. Queue buffers set the maximum buffer limit for a specified
queue. If a queue buffer limit is not set, then the default is used. The system default queue
buffers for different platforms are listed in “Buffer and descriptor maximum and default
allocation values” on page 596. To configure the queue buffers for the user-configurable buffer
profile named “profile1”, enter the following command at the profile configuration level.
Brocade(qd-profile-profile1)# profile-config queue-buffers 2 600
Syntax: profile-config queue-buffers <queue-num> <decimal>
The <queue-num> variable refers to the number of the queue of a port from 0 through 7.
The <decimal> variable refers to the number of buffers.
6. Configure the queue descriptors. Queue descriptors set the maximum descriptor limit for the
specified queue. If a queue descriptors limit is not set, then the default is used. The system
default queue descriptors for different platforms are listed in “Buffer and descriptor maximum
and default allocation values” on page 596. To configure the queue descriptors for the
user-configurable buffer profile named “profile1”, enter the following command at the profile
configuration level.
Brocade(qd-profile-profile1)#Profile-config queue-descriptors 2 600
Syntax: profile-config queue-descriptors <queue-num> <decimal>
The <queue-num> variable refers to the number of the queue of a port from 0 through 7.
The <decimal> variable refers to the number of descriptors.
Applying a user-configurable buffer profile on the device
Once configured, a user-configurable buffer profile must be applied on the device. To apply the
user-configurable buffer profile named “profile1” to a device, enter the following command.
Brocade(config)# buffer-profile port-region 0 qd-buffer-profile profile1
Syntax: [no] buffer-profile port-region <port-region> qd-buffer-profile <user-profile-name>