Technical data

A-6 Brocade SilkWorm 4100 Hardware Reference Manual
Publication Number: 53-0000563-02
Data Transmission Ranges
A
Data Transmission Ranges
Table A-5 provides the data transmission ranges for different cable types and port speeds.
Memory Specifications
The SilkWorm 4100 has four types of memory devices:
• Boot flash: 4 MB
• Kernel flash: 16 MB
• Compact flash: 512 MB
• Main memory (SDRAM): 512 MB- 1 GB
Fibre Channel Port Specifications
The Fibre Channel ports in the SilkWorm 4100 are compatible with SWL, LWL, and ELWLW SFP
transceivers. The strength of the signal is determined by the type of transceiver in use.
The ports meet all required safety standards. For more information about these standards, see
“Regulatory Compliance” on page A-9.
Table A-5 Laser Data Transmission Ranges
Port Speed Cable Size
(microns)
Short Wavelength
(SWL)
Long Wavelength
(LWL)
Extended Long
Wavelength
(ELWL)
1 Gbit/sec 50 1,640 feet (500
meters)
6.2 miles (10 km) n.a
62.5 984 feet (300 meters) 6.2 miles (10 km) n.a
9 n.a 6.2 miles (10 km) 24.8 miles (40 km)
2 Gbit/sec 50 984 feet (300 meters) 6.2 miles (10 km) n.a
62.5 492 feet (150 meters) 6.2 miles (10 km) n.a
9 n.a 10 km (6.2 miles)
without a Brocade
Extended Fabrics
license; 50 to 100 km
with a Brocade
Extended Fabrics
license
24.8 miles (40 km)
4 Gbit/sec 50 492 feet (150 meters) n.a n.a
62.5 230 feet (70 meters) n.a n.a
9n.a n.a n.a