You're using 1st generation N9K. It's not listed in support list.
Beginning Cisco NX-OS Release 9.3(3), SVI and subinterface unicast counters are supported on Cisco Nexus 9300-EX, 9300-FX/FX2 switches; and Cisco Nexus 9500 series switches with X9700-...
Basically, switch is doing HW forwarding, I don't believe you hit such basic performance issue. You can take a look the physical path of your testing flow and figure out which hop triggers this problem. In case of any low speed issue, I always suspec...
I'm sorry to say this is a HW limitation.
Workaround:
Configure a PACL with redirect to the egress interface or configure BFD without the echo function
1. TTAG-Strip will definitely remove TTAG header by egress port. That's why you didn't see it.
2. I think you should capture packet from e1/2's endpoint directly instead rely on SPAN. Ping failed already points e1/2 endpoint may not recognize pky whi...
