Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 53)

Port type modification resets the profile to its default value. All the port and queue buffers and
descriptors will be set to either 1 Gbps or 10 Gbps defaults as per the configuration, which means all
the user configurations for the port and its queues will be lost.
NOTE
Port type modifications on an active profile are not allowed.
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 54. To configure the port
buffers for the user-configurable buffer profile named "profile1", enter the following command at the
profile configuration level.
device(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 54. To
configure the port descriptors for the user-configurable buffer profile named "profile1", enter the
following command at the profile configuration level.
device(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 54. To
configure the queue buffers for the user-configurable buffer profile named "profile1", enter the
following command at the profile configuration level.
device(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 54. To configure the queue descriptors for the user-configurable buffer
profile named "profile1", enter the following command at the profile configuration level.
device(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.
device(config)# buffer-profile port-region 0 qd-buffer-profile profile1
Syntax: [no] buffer-profile port-region port-region qd-buffer-profile user-profile-name
Basic Layer 2 Features
FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide 53
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