HP StorageWorks 64 FW 07.00.00/HAFM SW 08.06.00 McDATA Products in a SAN Envir - Page 53
Sphereon 4300 Fabric Switch
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Introduction to McDATA Multi-Protocol Products 1 • Extended distance support - Fibre Channel ports are configured for extended distance operation (using repeaters) by changing the port buffer-to-buffer credit (BB_Credit) setting to a higher value. Refer to Distance Extension Through BB_Credit for detailed information. BB_Credits are configured as follows: - Intrepid 6000-series Directors - Ports configured at 1.0625 Gbps transmit data (1,800 bytes frames) up to 120 km by setting the BB_Credit value to 60. Ports configured at 2.1250 Gbps ports transmit data (1,800 bytes frames) up to 60 km by setting the BB_Credit value to 60. Ports configured at 10.2000 Gbps ports transmit data (2,100 bytes frames) up to 100 km by setting the BB_Credit value to 400. - Intrepid 10000 Director - Each director LIM contains two scalable packet processors, each supporting two optical paddles (a maximum of 16 1.0625 or 2.1250 Gbps ports or four 10.2000 Gbps ports). After assigning BB_Credit values of 16 to short-link ports and setting the maximum BB_Credit to 1133 for a long-link port (with the remote fabric PFE key enabled), a 1.0625 Gbps port can transmit data up to 2,200 km, and a 2.1250 Gbps port can transmit data up to 1,100 km. After assigning BB_Credit values of 96 to short-link ports and setting the maximum BB_Credit to 1085 for a long-link port (with the remote fabric PFE key enabled), a 10.2000 Gbps port can transmit data up to 180 km. Refer to Distance Extension Through BB_Credit for configuration parameters and other detailed information. - Sphereon 3232 Fabric Switch - All 2.1250 Gbps ports transmit data (1,800 bytes frames) up to 60 km by setting the port BB_Credit value to 60. - Sphereon 4300 Fabric Switch - All switch ports are preset to a BB_Credit value of 5. By enabling the full fabric PFE key, the per-port BB_Credit value is increased to 12, providing a data transmission distance of up to 24 km at 1.0625 Gbps and up to 12 km at 2.1250 Gbps. Refer to Full Fabric for information. - Sphereon 4500 Fabric Switch - The first four switch ports (numbered 0 through 3) are preset to a BB_Credit value of 12, providing a data transmission distance of up to 24 km at 1.0625 Gbps, and up to 12 km at 2.1250 Gbps. The remaining ports are preset to a BB_Credit value of 5 and do not support extended distance operation. Introduction to McDATA Multi-Protocol Products 1-27
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