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564 Fabric OS Administrator’s Guide
53-1002745-02
Buffer credit management
23
For the FC8-x port blades, the first number in the Unreserved buffer credits 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 84 shows the maximum supported extended distances (in kilometers) that can be configured
for one port on a specific switch or blade at different speeds.
FC8-32 32 16 1292/508
FC8-32E 32 16 5456
FC8-48 48 24 1228/716
FC8-48E 48 24 5008
FC8-64 *** Extended Fabrics is not supported on this blade ***
FC16-32 32 16 5456
FC16-48 48 24 5008
FS8-18 16 8 1604
FX8-24 12 12 1060
TABLE 84 Configurable distances for Extended Fabrics
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
5450 470 235 117.5 N/A N/A
5480 486 243 121.5 N/A N/A
6505 7426 3713 1856 1485 928
6510 6754 3377 1688 1350 844
6520 4064 2032 1016 812 508
7800 410 205 102 N/A N/A
8000 *** Extended Fabrics is not supported on this switch ***
VA-40FC 1694 847 423 N/A N/A
Brocade Encryption Switch 1392 696 348 N/A N/A
FC8-16 1294 647 323 N/A N/A
TABLE 83 Total FC ports, ports per port group, and unreserved buffer credits per port group
Switch/blade model Total FC ports (per switch/blade) User port group size Unreserved buffer credits per port
group