Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 409)

• In a configuration with two switches with multiple ISLs connecting them, an encrypted and non-
encrypted pair of links between two chassis is not allowed to work concurrently. Also, the transition
from non-encrypted to encrypted ISLs between the two switches is disruptive.
• The payload size of a frame is restricted to 2048 bytes.
Bandwidth and port limits for in-flight encryption and compression
Fabric OS supports up to 32 Gbps of data encryption and 32 Gbps of data compression per 16 Gbps-
capable FC platform. This limits the number of ports that can have these features enabled at any one
time.
The port speed affects the number of supported ports. The slower the speed, the more ports are
supported. In general, at 16 Gbps, the number of supported ports is 2 per ASIC or trunk.
The following table shows some examples of how port speed affects the number of supported ports for
different implementations.
Number of ports supported for in-flight encryption and compression at various port speeds TABLE 77
Port speed Encryption only Compression only Encryption and compression
Blades (FC16-32, FC16-48, FC16-64) 14
16 Gbps 4 ports 4 ports 4 ports
10 Gbps 6 ports 6 ports 6 ports
8/4/2 Gbps 8 ports 8 ports 8 ports
Auto-negotiate (AN) 4 ports 4 ports 4 ports
6510 Fixed-port switches and 16 Gbps embedded switches 15
16 Gbps 2 ports 2 ports 2 ports
10 Gbps 3 ports 3 ports 3 ports
8/4/2 Gbps 4 ports 4 ports 4 ports
Auto-negotiate (AN) 2 ports 2 ports 2 ports
6520 Fixed-port switches 16
16 Gbps 8 ports 8 ports 8 ports
10 Gbps 12 ports 12 ports 12 ports
8/4/2 Gbps 16 ports 16 ports 16 ports
Auto-negotiate (AN) 8 ports 8 ports 8 ports
14 The port blades have two ASICs; the per ASIC limit = numbers above/two
15 The Brocade 6510 switch and 16 Gbps embedded switches have one ASIC; the per ASIC limit = numbers above
16 The Brocade 6520 has four edge ASICs; the per ASIC limit = numbers above/four
Bandwidth and port limits for in-flight encryption and compression
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