Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 58)

If you configure buffers at the port or queue level (using qd commands or buffer profiles), the buffer
sharing level automatically changes to 1. You can change it manually.
FCX buffer sharing level definitions TABLE 13
Buffer sharing level Shared buffer limit (in buffers) Shared buffer total (in kilobytes)
1 256 64
2 1024 250
3 1536 375
4 2048 500
5 (default) 2560 625
6 3072 750
7 3584 875
8 4096 1000
ICX 6610 buffer sharing levels
The ICX 6610 buffer sharing level configures the shared buffers on the device. The ICX 6610 shared
buffers are divided into pools. Each of the following pools defines the buffer allocation for a set of
traffic class (TC) queues:
• Pool 0 contains TCs 0 and 1.
• Pool 1 contains TCs 2, 3, and 4.
• Pool 2 contains TCs 5 and 6.
• Pool 3 contains TC 7.
For example, the buffers allocated to Pool 0 are shared between TCs 0 and 1. The following table
defines the ICX 6610 buffer sharing level settings. Note that only the values of Pool 0 change. For
information about configuring buffer sharing, refer to
Configuring buffer sharing on FCX and ICX
devices on page 57.
ICX 6610 buffer sharing level definitions TABLE 14
Buffer sharing level Shared buffer limit Shared buffer total (in
kilobytes) Pool 0 sharing buffers
(in kilobytes)
Pool 0 -TC 0, 1 Pool 1 -
TC 2, 3, 4
Pool 2 -
TC 5, 6
Pool 3 -
TC 7
1 Not supported
2 128 128 192 192 250 64
3 256 128 192 192 375 125
4 512 128 192 192 500 250
ICX 6610 buffer sharing levels
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