[c-nsp] Cisco Nexus 3k Route Selection\Packet Forwarding Debugging

[Jon Lewis]

On Mon, 3 Apr 2023, Mike Hammett via cisco-nsp wrote:

> We have a Nexus 3064 that is setup with partial BGP tables and is routing based on that.
>
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> I've done a show ip bgp for an IP of interest and it has an expected next hop IP. I show ip arp on that next hop IP and it has the expected interface.
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> However, sFlows show the packets leaving on a different interface, the one that would carry the default route for routes not otherwise known.
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> If the next hop IP is expected and the ARP of that next hop IP is expected, why are packets leaving out an unexpected interface?

Flowspec rules?  Policy routing?  Bugs? :)

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  Jon Lewis, MCP :)           |  I route
  StackPath, Sr. Neteng       |  therefore you are
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