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So I have one more thing to add to this post now. I opened a case with TAC and they told me that starting with 16.3.1 there would be support for the twinax on the asr1001x. I have upgraded my IOS from the test in my previous post from 3.16.04a to 1...
I can confirm that they do not work as expected. I tried using the twinax cables to connect 2 ASR 1001-x routers to Nexus 5548 switches. The links would come up and work for the most part but the ASR router would not detect a link failure for over ...