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Port buffer and descriptors values on ICX 6450 devices
1
(Continued)TABLE 11
1 Gbps buffers 10 Gbps buffers 1Gbps descriptors 10 Gbps descriptors
TC3 144 192 144 192
TC4 144 192 144 192
TC5 192 256 192 256
TC6 192 256 192 256
TC7 192 256 192 256
1 Values are the same for stand-alone and stacking systems.
Configuring values for the ICX 6430
Port buffer and descriptor values in Table 10 are default values for software traffic classes. For the ICX
6430, traffic classes are mapped to shared hardware queues (refer to "Queues for the ICX 6430
switch" section in the FastIron Ethernet Switch Traffic Management Guide . Refer to the following are
considerations for configuring your own values and buffer profiles.
User-defined values have precedence over default values. For example, if default values for TC2,
TC3, and TC4 are 96 and you configure 80 for TC3, then the hardware TC1 will be 80 (software
TC2, TC3, and TC4 are mapped to hardware TC1).
The higher user-configured value has precedence. For example, if the software TC2 default value is
96 (which is also the value of TC3 and 4), if you configure 100 for TC2 and 120 for TC3, then the
hardware TC1 value will be 120 (software TC2, TC3, and TC4 are mapped to hardware TC1).
Displaying the user-configurable buffer profile configuration on FCX and ICX devices
To display the specified user-configurable buffer profile configuration, use the show qd-buffer-profile
user-profile-name command.
To display all the user-configurable buffer profiles configured on the device, use the show qd-buffer-
profile active-profile command.
To display all the buffer profiles configured on the device, use the show qd-buffer-profile all command.
The following example shows that the user-configurable buffer profile "OneGigProfile" is configured for
1 Gbps ports with the number of buffers and descriptors allocated to each queue. Note that buffers
and descriptors displayed in this example are not necessarily default values.
device(config)# show qd-buffer-profile OneGigProfile
User Buffer Profile: OneGigProfile Port-type: 1Gig
Total Buffers = 8096 Total Descriptors = 8096
Per Queue details: Buffers Descriptors
Traffic Class 0 50 38
Traffic Class 1 50 38
Traffic Class 2 50 38
Traffic Class 3 50 38
Traffic Class 4 50 38
Traffic Class 5 50 38
Traffic Class 6 132 132
Traffic Class 7 20 20
Syntax: show qd-buffer user-profile-name | all
The following table defines the fields in the output of the show qd-buffer all command.
Displaying the user-configurable buffer profile configuration on FCX and ICX devices
56 FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide
53-1003086-04
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