http://m.getsatisfaction.com/topics/7730730 Transparent frame pass with unknown ethertype 2018-05-05T18:53:58Z 2018-05-04T13:51:36Z 7730730 http://m.getsatisfaction.com/topics/7730730 7730730 Transparent frame pass with unknown ethertype 2018-05-05T18:53:58Z 2018-05-04T13:51:36Z Sergei Hanus http://m.getsatisfaction.com/people/8337071 https://www.gravatar.com/avatar/47e1df01ae8ea414c699c3ad1c04fd99?d=identicon&s=55&r=PG sergei_hanus I got a question - whether it is possible to transparently pass a frame between two ports with unknown ethertype?<br />Usecase is the following: there's some amount of Cisco TrustSec traffic in the network (with their custom ethertype), and, as we don't directly support handling this traffic - would it be possible to just transparently switch it?&nbsp; question 2 2 1 comment http://m.getsatisfaction.com/topics/7730730/replies/19503136 http://m.getsatisfaction.com/topics/7730730 19503136 Eric Pulvino responded to "Transparent frame pass with unknown ethertype" 2018-05-04T14:24:27Z 2018-05-04T14:24:27Z Eric Pulvino http://m.getsatisfaction.com/people/7795369 https://d2r1vs3d9006ap.cloudfront.net/public/uploaded_images/10746583/705A1674-300_medium.jpg eric_pulvino If we don't have any clue what the ethertype is, I would think it would just be generic L2 at that point.... MAC switching... Is that not what you're seeing?<br /><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/13/Ethernet_Type_II_Frame_format.svg/946px-Ethernet_Type_II_Frame_format.svg.png" title="Image https//uploadwikimediaorg/wikipedia/commons/thumb/1/13/Ethernet_Type_II_Frame_formatsvg/946px-Ethernet_Type_II_Frame_formatsvgpng" /> 0 http://m.getsatisfaction.com/topics/7730730/replies/19505177 http://m.getsatisfaction.com/topics/7730730/replies/19503136 19505177 Sergei Hanus responded to "Transparent frame pass with unknown ethertype" 2018-05-05T18:53:58Z 2018-05-05T18:53:58Z Sergei Hanus http://m.getsatisfaction.com/people/8337071 https://www.gravatar.com/avatar/47e1df01ae8ea414c699c3ad1c04fd99?d=identicon&s=55&r=PG sergei_hanus You are right. I asked question just in case there is some known limitation for this scenario - like, maybe, the chipset logic checks ethertype, and, if it's unknown - drop it. 0