I have a 6509 attached to a pair of nx9000s via Ten Gig fiber which are in turn connected to four 3850s -- standalone, not stacked -- also by Ten Gig fiber. CDP shows that each device can see the next hop in the chain and VTP information propagates from the 6509 through the nx9000 to the 3850s. So far so good.
My problem arises because no IP traffic seems to pass through through the nx9000s. In the diagram below, Node B and Node C can talk to each other as expected if they are on the same VLAN. However, neither can talk to Node A nor can A talk to B or C. By "not talk" I mean that a sniffer on A sees no IP packets at all from B or C. Similarly, a sniffer on B or C sees nothing from A.
All of the connections between the switches are configured as trunks and appear to be working normally except for this puzzling lack of traffic. I guess there is some configuration required I just don't knew about yet but swlep me I cannot find it in the manuals.
