Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 395

In-flight encryption and compression overview 14 Bandwidth limits Fabric OS supports up to 32 Gbps of data encryption and 32 Gbps of data compression per 16G-capable FC platform. This limits the number of ports that can have these features enabled at any one time. Table 62 shows some examples of how port speed affects the number of supported ports for different implementations. TABLE 62 Number of ports supported per chip or per trunk Blades (FC16-32, FC16-48)1 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 6510 Fixed-port switches2 4 ports 16 Gbps 2 ports 2 ports 10 Gbps 3 ports 3 ports 8/4/2 Gbps 4 ports 4 ports Auto-negotiate (AN) 2 ports 2 ports 6520 Fixed-port switches3 2 ports 3 ports 4 ports 2 ports 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 1. For port blades, two ASICs; per ASIC limit = numbers above/two 2. For Brocade 6510, one ASIC; per ASIC limit = numbers above/one 3. For Brocade 6520, four edge ASICs; per ASIC limit = numbers above/four NOTE Even though this table does not show all the possible combinations of different speeds for the encryption/compression ports, other combinations are also supported. The number of supported ports is automatically calculated based on the speeds chosen. Payload size limits As the current encryption protocol can support only 560 words (2240 bytes), the payload size of the frame has to be restricted to 2048 bytes. This is to ensure the frame reception on an encryption-enabled XISL involving a Base switch works correctly. Key Entry limitations The current encryption supports the AES-GCM authenticated encryption block cipher mode. A key, Initial Vector (IV), segment number and Salt are required to encrypt the data before it is transmitted, and to decode the data after it is received on the other end of the link. Fabric OS Administrator's Guide 395 53-1002745-02