4. Appendix
4-3
TI 30A10A05-01E
n
Optical fiber cables
To connect switches in a Vnet/IP domain, we recommend that you use the single-mode optical
fiber cable type, which conforms to IEC 60793-2-50 B1.1, ITU-T G.652.B, or JIS C 6835 SSMA-
9.3/125. (*1)
LC connectors are compatible with the SFP for recommended layer 2 switches and layer 3
switches. Use optical fiber cables with LC connectors on both ends. We recommend that you use
optical fiber cables with duplex LC connectors to avoid incorrect connections.
According to 1000BASE-LX interface specifications as defined by the IEEE802.3 standard, the
maximum length of a single-mode optical fiber cable is 5 km. (*2)
*1: We do not recommend the use of multi-mode optical fiber cable type for connecting switches in a Vnet/IP domain. Use the single-
mode optical fiber cable type when installing new optical fiber cables.
If you are reusing existing multi-mode cables, ensure that the installed cables satisfy the following conditions:
If the core diameter is 50 um (GI 50/125):
• Transmission loss: 1 dB/km or less (wavelength range of 1310 nm)
• Modal bandwidth: 500 MHz/km or more (wavelength range of 1310 nm)
If the core diameter is 62.5 um (GI 62.5/125):
• Transmission loss: 1 dB/km or less (wavelength range of 1310 nm)
• Modal bandwidth: 500 MHz/km or more (wavelength range of 1310 nm)
The maximum transmission distance for multi-mode optical fiber cable is 550 m. To use the multi-mode optical fiber cable, you
have to connect mode conditioning patch cords to the output terminal of the SFP.
*2:
In case further length is required, refer to “Network Switch for Vnet/IP” (TI 30A10A30-01E.)
Mar.19,2012-00
Summary of Contents for Vnet/IP
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