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Twinax Cable Knowledge
- Cable Labeling as Part of Data Center Management
- How to Correctly Run cables On Servers in a Data Center?
- 4 Realities You Should Consider 10G Ethernet for Your Business
- Is it finally the end of copper?
- Why We Need Both 40G and 100G Ethernet Cable?
- What is Twisted Pair Cable?
- Benefits of Twisted Pair Cable Construction
- Why Copper Is Used in Cables?
- A Brief Look at Ethernet Cable Construction
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Twinax Cables are mainly used with PCI or PCI-E Card for the short distance interconnection in the server room.
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Twinax Cable Knowledge
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What Could We Use to Test Cisco Twinax Cables
What could we use to test Cisco twinax cables - specifically the SFP-H10GB-CUxM passive cables, and the SFP-H10GB-ACUxM active cables? These cables are identified in the industry as SFP+ direct-attach copper cables, and can be used to interconnect Nexus switches and other devices at 10GE. He has recently connected a bunch of them in his data center. These cables use the Ethernet Alliance's SFF-8431 and SFF-8461 standards. Specifically, SFF-8431 is for the Passive Twinax cables, and SFF-8461is for the Active Twinax cables.
10G 1310nm 10km SFP+ Optical Transceiver
Based on our research, the practical answer is no - there is just not a simple " yes, good cable / no, bad cable" hand-held tool for Cisco twinax cables.
For example, we spoke with Cisco, they do not have a test tool. We spoke with Fluke, they don't have an module that accepts the Cisco twinax cables. We spoke with CableandKits - they don't have a tester either. We also talked to CDW, who looked internally, and called around their associates. They don't have a hand-held tester, or know of anyone who does.
We did see that Tektronix gear was previously used for testing the SFF-8431 standard in Ethernet Alliance's SFP+ Direct Copper Attach Interoperability paper, so I asked them as well. Tektronix said you could use a DSA8300 sampling oscilloscope with a 80E04 TDR module and 80SSPAR software to test the cable. They said that there is some learning curve to it, but that a local account manager could demonstrate how to use it properly.
However, this is probably more advanced than most end users will want. These tools would give you a frequency response graph and impedance and reflections, but not a simple Pass or Fail test. These components have a list price of about $64,000, so while technically possible, it appears to be too expensive to be a practical solution for most end users.
Workaround: Since all the twinax cables are 1m - 10m, we should probably reserve two ports on adjacent Nexus gear, configure them to be up, and just hook a suspect cable up between the two "active" ports and see if it works
We supply high quality twinax cables compatible with multi-platform, such as Cisco, HUWWEI, Juniper and so on. For more info, please contact a Sopto representative by calling 86-755-36946668, or by sending an email to info@sopto.com.