Reference Guide

TABLE 79 Gen 5: Number of ports supported for in-flight encryption and compression at various port speeds (continued)
Port speed Encryption only Compression only Encryption and compression
Auto-negotiate (AN) 4 ports 4 ports 4 ports
6510 Fixed-port switches and 16 Gbps Blade Server SAN I/O Modules
10
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
11
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
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.
NOTE
This section applies only to Gen 5 (16-Gbps) platforms.
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.
The port speed values can be displayed through several commands, including portEncCompShow , portShow , and switchShow .
You can change the port speed on any port that has encryption or compression enabled with the portCfgSpeed command. If the
capacity is available, the port is configured with the new speed. If there is not enough capacity available, you cannot change the port
speed.
Refer to Setting port speeds on page 83 for more information.
How in-flight encryption and compression are enabled
Encryption and compression capabilities and configurations from each end of the ISL are exchanged during E_Port or EX_Port
initialization. Capabilities and configurations must match, otherwise port segmentation or disablement occurs.
If the port was configured for compression, then the compression feature is enabled.
If the port was configured for encryption, authentication is performed and the keys needed for encryption are generated. The encryption
feature is enabled if authentication is successful. If authentication fails, then the ports are segmented.
9
The port blades have two ASICs; the per ASIC limit = numbers above/two
10
The Brocade 6510 switch and 16 Gbps Blade Server SAN I/O Modules have one ASIC; the per ASIC limit = numbers above
11
The Brocade 6520 has four edge ASICs; the per ASIC limit = numbers above/four
In-flight Encryption and Compression
Brocade Fabric OS Administration Guide, 8.0.1
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