10Gtek SFP+ Passive DAC Cables between Netgear GSM73xx 10GBe Ports
I have sucessfully used Cisco 5m Compatible SFP+ Passive DAC Cables between Netgear GSM73xx 10GBe Ports and Intel 10GBe cards without problems in both Ethernet an iSCSI environments in many high demand configurations.However, recently due to production and model changes the Intel Server NIC's went into short supply and so for the next job we used Emulex NICs.Emulex NICs would NOT WORK with 5m Passive Cisco DAC Cables! - They work perfectly however with 5m ACTIVE DAC cables.From experience anything over 3m 10GBe on DAC becomes very hardware dependent and as ACTIVE DAC cables are twice the cost of PASSIVE you need to be certain about what your buying and is it compatible?So as a rule of thumb, <3m can use a Passive DAC but >3m is likely to require Active DAC cables.Hope this helps any 10GBe newbies playing with Server connectivity.SFP+ Passive DAC Cables can be used instead of transceivers for distances up to 8.5 meters. IBM BNT switches with SFP+ ports will allow any MSA compliant SFP+ DAC cable to operate without disabling the port. Technical details Cable length5Colour of p More info...Quickly becoming a cost saving alternative to expensive SFP+ Optics, our compatible Twinax 10G assemblies bring affordability to the datacenter, without sacrificing quality! Also known as Direct Attach Cables (DAC), these units are designed for specific use in Cisco brand switches. Top-of-rack to top-of-rack applications are simplified and easily deployed, maximizing value.Individual unit re-testing in Nexus series switches at time of shipping ensures out the box compatibility, minimizing installation delays.
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