nTAPs : Overview, FAQ, Attenuation : nTAP documentation changes
  
nTAP documentation changes
Along with the date, this list shows the major changes that were made to the product documentation.
 
March 30, 2018 (17.4.0.0)
Published 17.4.0.0 release notes for the Observer Platform.
 
 
February 8, 2018 (17.3.3.0)
Published 17.3.3.0 release notes for the Observer Platform.
 
 
November 27, 2017 (17.3.2.0)
Published 17.3.2.0 release notes for the Observer Platform.
 
 
September 15, 2017 (17.3.1.0)
Published 17.3.1.0 release notes for the Observer Platform.
Improved the search algorithm to provide better results by giving greater importance to terms found in titles, introduction paragraphs, and keywords.
 
 
July 13, 2017 (17.3.0.0)
Published 17.3.0.0 release notes for the Observer Platform.
 
 
May 5, 2017 (17.2.3.0)
Published 17.2.3.0 release notes for the Observer Platform.
 
 
March 10, 2017 (17.2.2.0)
Published 17.2.2.0 release notes for the Observer Platform.
 
 
January 17, 2017 (17.2.1.1)
Published 17.2.1.1 release notes for the Observer Platform.
 
 
January 11, 2017 (17.2.1.0)
Published 17.2.1.0 release notes for the Observer Platform.
 
 
December 2, 2016 (17.2.0.0)
Published 17.2.0.0 release notes for the Observer Platform.
Added information about using a crossover cable in Choosing crossover or straight-through cables.
Added details about the Y-cable to Are the analyzer ports “send only”?. In particular, added images that show the flow of traffic inside of a TAP and how the Analyzer ports on the TAP cannot receive traffic from an analyzer.
Clarified details in What happens if my TAP loses power? for electrical and optical TAPs.
Added documentation about 40 Gb and 100 Gb singlemode support in the High Density Optical TAP.
Added details about the chassis used for the High Density Optical TAP and that you can mix-and-match TAP speeds in the chassis.
Updated all images to reflect new product design.
Added details to several images (e.g., High Density Optical TAP, Copper TAP)indicating the path packets take inside the TAP. For a Gigabit Copper TAP the lines show packets going in (RX) the Link A port and being copied to Link B (TX) as well as copied to the Analyzer A port. Other images show similar information.
 
 
November 22, 2016 (17.1.1.4)
Published 17.1.1.4 release notes for the Observer Platform.
 
 
September 23, 2016 (17.1.1.3)
Published 17.1.1.3 release notes for the Observer Platform.
 
 
September 20, 2016 (17.1.1.2)
Published 17.1.1.2 release notes for the Observer Platform.
 
 
July 29, 2016 (17.1.1.1)
Published 17.1.1.1 release notes for the Observer Platform.
 
 
January 20, 2016
Corrected the listed operating temperatures of all nTAP products that are not purely optical. The listed operating temperature has been corrected to show 32° - 113° F/0° - 45° C. This means any nTAP with a copper network interface anywhere in its design is affected by this documentation change. The products themselves have not changed; this is only a change to the documentation.
 
 
October 27, 2015
Add an FAQ that helps with Understanding why Link B is active when Link A is offline for your copper-based nTAP.
 
 
August 11, 2015
Made additional mentions that if you are using an optical connection from the nTAP to your analyzer, the receiving NIC on the analyzer must have auto-negotiation disabled. If auto-negotiation on the NIC is enabled, you will not be able to see traffic from the nTAP. If this network adapter does not have the option to disable auto-negotiation, you must obtain a different network adapter that can—there are no exceptions. Remember, all capture card models support enabling and disabling auto-negotiation, so these mentions are applicable when using third-party network adapters.
 
 
May 22, 2015
Added information that the maximum frame size allowed through an nTAP is up to 16K; 64K super jumbo frames are not supported.
 
 
May 5, 2015
For clarity, mentions have been inserted about nTAPs being susceptible to dropping packets during renegotiation immediately after a power loss event.
Choosing between a SPAN, Aggregator, or full-duplex TAP
Deciding whether to use a TAP or a SPAN/mirror port
 
 
March 25, 2015
The table column headings for multimode 50 and 62.5 micrometer were erroneously swapped. These headings have been corrected.
Determining the best split ratio for you