Fabric OS Administrator's Guide v7.0.0 (53-1002148-02, June 2011)

Fabric OS Administrator’s Guide 457
53-1002148-02
Buffer credit management
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For the FC8-x port blades, the first number in the Unreserved buffers 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
Table 80 shows the maximum supported extended distances (in kilometers) that can be configured
for one port on a specific switch or blade at different speeds.
5300 80 16 292
5410 12 12 580
5424 24 24 484
5450 26 26 468
5480 24 24 484
6510 48 48 6752
7800 16 16 408
8000 *** Extended Fabrics is not supported on this switch ***
VA-40FC 40 40 1692
Brocade Encryption Switch 32 16 1392
FC8-16 16 16 1292/ 508
FC8-32 32 16 1292/ 508
FC8-48 48 24 1228/ 716
FC8-64 *** Extended Fabrics is not supported on this blade ***
FC16-32 32 16 5188
FC16-48 48 24 4484
FR4-18i 16 8 377
FS8-18 16 8 1604
FX8-24 12 12 1060
TABLE 80 Configurable distances for Extended Fabrics
Maximum distances (km) that can be configured assuming 2112 Byte Frame Size
Switch/blade model 1 Gbps 2 Gbps 4 Gbps 8 Gbps 10 Gbps 16 Gbps
300 972 486 243 121 N/A N/A
5100 3388 1694 847 423 N/A N/A
5300 588 294 147 73 N/A N/A
5410 1164 582 291 145.5 N/A N/A
5424 972 486 243 121.5 N/A N/A
5450 940 470 235 117.5 N/A N/A
TABLE 79 Buffer credits (Continued)
Switch/blade model Total FC ports (per switch/blade) User port group size Unreserved buffers (per port group)