I took the exam yesterday , but I failed . I had issues with VPC and spend lot of time resolving the same, could not get past it. I could not get vpc keep alive to come up at all, not sure what was I doing wrong. some pointers would be helpful. I got Old lab , and I used vpc peer-keepalive as L3 interface pointing to core router on dc17k3 , I had put in following command . OSPF was running and I could ping both interfaces from each vdc. vpc domain 1 peer-keepalive destination "dc17k4 ip to the cloud" vrf default source "dc17k3 ip to the cloud" on the dc17k4 , i did reverse? Any pointers would be helpful, if I need to do any thing else?