Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) User Manual
Page 126
Total FC ports, ports per port group, and unreserved buffer credits per port group
(Continued)
TABLE 17
Switch/blade model
Total FC ports (per
switch/blade)
User port group size Unreserved buffer credits per
port group
FC16-32
32
16
5408
FC16-48
48
24
4960
FC16-64
64
32
4288
FS8-18
16
8
1604
FX8-24
12
12
1060
For the FC8-x port blades, the first number in the "Unreserved buffer credits per port group" column
designates the number of unreserved buffers per port group without buffer optimized mode; the
second number designates the unreserved buffers with buffer optimized mode enabled on the slot.
Use the bufOpMode command to display or change the buffer optimized mode.
Maximum configurable distances for Extended Fabrics
The following table shows the maximum supported extended distances (in kilometers) that can be
configured for one port on a specific switch or blade at different speeds.
Formulae:
The remaining buffers = (Total FE Ports * 8) + (Total BE/BI Ports * Buffers for BE/BI Port) + EMB
Buffers + SAB Buffers
Long distance Calculation: Buffers = distance * speed * 0.5
Distance = (Buffers * 2) / speed
Configurable distances for Extended Fabrics
TABLE 18
Maximum distances (km) that can be configured (assuming a 2112-byte frame size)
Switch/blade model
2 Gbps
4 Gbps
8 Gbps
10 Gbps
16 Gbps
300
486
243
121
N/A
N/A
5100
1694
847
423
N/A
N/A
5300
294
147
73
N/A
N/A
5410
582
291
145.5
N/A
N/A
5424
486
243
121.5
N/A
N/A
5431
550
275
137.5
N/A
N/A
5432
486
243
121.5
N/A
N/A
5450
470
235
117.5
N/A
N/A
Maximum configurable distances for Extended Fabrics
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Fabric OS Administrators Guide
53-1003130-01