With the link above, how do the broadcasts or unknown unicast traffic when it reaches "Host 1 or 2" NOT forward itself back out on their interfaces facing the Nexus switches again also and create a loop? I understand understand peer-link won't forward it out across the links on the Nexus switches (only orphan ports), but when the nexus switches recieve the broadcast via the direct link from the host, it is then sent out the other VPC facing the other switch, so then surely the other switch (host) will get it and broadcast it back out the same interface facing the other Nexus switch? If so then how does a loop not occur here?
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