Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 438
Upgrade considerations, Fixed addressing mode, Configuring NPIV
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NPIV Upgrade considerations The maximum logins per switch decreased with Fabric OS v6.4.0. When upgrading from a release previous to Fabric OS v6.4.0, the configured maximum is carried forward and may exceed the Fabric OS v6.4.0 limit. It is recommended to reconfigure this parameter to be within the range permitted in Fabric OS v6.4.0 and later. Fixed addressing mode Fixed addressing mode is the default addressing mode used in all platforms that do not have Virtual Fabrics enabled. The number of NPIV devices supported on shared area ports (48-port blades) is reduced to 64 from 128 when Virtual Fabrics mode is enabled. 10-bit addressing mode The 10-bit addressing mode is the default mode for all the logical switches created in the Brocade DCX 8510, and X6 Backbones. The number of NPIV supported on a port is 64. In 10-bit addressing mode, the switch can dynamically assign up to 112, 8-bit areas, after that 10-bit areas are assigned. So the 8-bit areas can have up to 255 devices, and 10-bit areas can have up to 63 devices. The following table shows the number of NPIV devices supported on the Brocade DCX 8510, and X6 Backbones. TABLE 85 Number of supported NPIV devices per port Platform Virtual Fabrics Logical switch type DCX 8510-8 (or) X6-8 Disabled N/A DCX 8510-8 (or) X6-8 DCX 8510-8 (or) X6-8 Enabled Enabled Default switch Logical switch DCX 8510-8 (or) X6-8 DCX 8510-4 (or) X6-4 DCX 8510-4 (or) X6-4 DCX 8510-4 (or) X6-4 Enabled Disabled Enabled Enabled DCX 8510-4 (or) X6-4 Enabled Base switch N/A Default switch Logical switch Base switch NPIV support Yes, 127 virtual device limit. Yes, 63 virtual device limit. Yes, 255 virtual device limit. The first 112 physical NPIV-capable devices connected to a logical switch using 10bit addressing can log in 255 logical devices. The physical NPIV-capable devices after 112, 113, and higher, are limited to 63 logical devices. If port is assigned a 10-bit area, the number of NPIV devices supported is 63. No. Yes, 255 virtual device limit. Yes, 255 virtual device limit. Yes, 255 virtual device limit. If port is assigned a 10-bit area, the number of NPIV devices supported is 63. No. Configuring NPIV The NPIV feature is enabled by default. You can set the number of virtual N_Port IDs per port to a value from 1 through 255 per port. The default setting is 126. The portCfgNPIVPort command is used to specify the maximum number of virtual N_port IDs per port on a switch. It can also be used to enable or disable NPIV. Once NPIV is enabled on the port, you can specify the number of logins per port. If the NPIV feature has been disabled, then the NPIV port configuration does not work. The addressing mode can limit the maximum number of NPIV logins to 127 or 63 depending on the mode. The portCfgNPIVPort command can set the maximum number of NPIV logins limit to anything from 1 through 255, regardless of the addressing mode. Brocade Fabric OS Administration Guide, 8.0.1 438 53-1004111-02
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