Routing Issue With New Nexus 9000 Switches

[Dan Man]

I've installed two spine Nexus 9504's, with two leaf 93180Y.  I have HSRP between the two Nexus cores.  I have one 40g connection to each Nexus core from each of the leaf switches.  They are in vPC configuration.  Everything is showing as it should.  vPC looks good, everything responds accordingly.  We started adding hosts to our leaf switches.  Let's say they are in the 10.10.10.0/24 network.  Let's say Nexus core 1 is 10.10.10.2, Nexus core 2 is 10.10.10.3, with an HSRP VIP of 10.10.10.1.  My server admin told me that he could ping some devices, but others he cannot.  When we did at traceroute, it appears that all of the devices that he cannot ping seem to hit the 10.10.10.3 Nexus core.  I've made sure that the routing is correct, and that there are no errors.  I'm at a loss....Thanks for the help!

[EduardR]

Sometime we got some similar problem with two nexus 7k, it was the peer configuration between the 2 Nexus, did you check the peer-link and the peer keepalive? also, the nexus have the peer-switch and the peer-gateway commands in the vpc domain?

[Dan Man]

Thank you for your reply.  I have configured the peer commands on the cores. Here’s the weird thing, I can’t ping the management IP on one of the 93180 leaf switches.  When I went through the initial config, I chose to use this switch in L2 mode.  

[EduardR]

Can you post your configuration on both switch? Did you check the consistency parameters on the nexus?