Users Guide

Fabric OS Administrator’s Guide 447
53-1002920-02
In-flight encryption and compression overview
16
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.
This table does not show all the possible combinations of different speeds for the encryption and
compression ports; other combinations are also supported. The number of supported ports is
automatically calculated based on the speeds chosen.
Port speed on encryption- or compression-enabled ports
The port speed determines the maximum number of ports on a device that can support the in-flight
encryption and compression features.
If the port speed is configured as AUTO NEG, the speed of the port is taken as 16 Gbps for
calculation purposes. It is recommended that you configure the ports to a specific speed before
enabling encryption or compression.
TABLE 74 Number of ports supported for in-flight encryption and compression at various port speeds
Blades (FC16-32, FC16-48)
1
1. The port blades have two ASICs; the per ASIC limit = numbers above/two
Port speed Encryption only Compression only Encryption and compression
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
2
2. The Brocade 6510 switch and 16 Gbps embedded switches have one ASIC; the per ASIC limit = numbers above
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
3
3. The Brocade 6520 has four edge ASICs; the per ASIC limit = numbers above/four
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