cisco Nexus9000 does not work properly

[Loc Nguyen]

Hi

Nexus9000 SW---------Trunk---------------Cisco Layer2 SW

+ 10.0.1.251 is the interface ip on the Nexus-SW

+ 10.0.2.254 is the interface ip of the Layer2-SW

+ 10.0.2.26 is a device connect to the Layer2-SW

- We have an issue that vlan 10.0.1.251 can not ping 10.0.2.26:

core-1# ping 10.0.2.26 source 10.0.1.251
PING 10.0.2.26 (10.0.2.26) from 10.0.1.251: 56 data bytes
Request 0 timed out
Request 1 timed out

- But it can ping 10.0.2.254:

core-1# ping 10.0.2.254 source 10.0.1.251
PING 10.0.2.254 (10.0.2.254) from 10.0.1.251: 56 data bytes
Request 0 timed out
64 bytes from 10.0.2.254: icmp_seq=1 ttl=253 time=1.077 ms
64 bytes from 10.0.2.254: icmp_seq=2 ttl=253 time=0.823 ms

- 10.0.2.26 has the correct default-gateway because I can ping it from other subnets:

core-1# ping 10.0.2.26 source 10.5.5.251
PING 10.0.2.26 (10.0.2.26) from 10.5.5.251: 56 data bytes
Request 0 timed out
64 bytes from 10.0.2.26: icmp_seq=1 ttl=62 time=1.096 ms
64 bytes from 10.0.2.26: icmp_seq=2 ttl=62 time=0.684 ms

It is a weird issue to me. I think the issue stays on the cisco Nexus9000. 

Could you advise?

Thanks

Loc

[balaji.bandi]

we need more information in terms of config and is the Nexys 9K in vPC ? ( do you have any dual-path nexus that can reach this IP address ?)

post the configuration which was connected to Layer 2 switch

show run interfaces ethernet x/x - on nexus side and Layer2 switch side.

show ip interface brief

show span summary

Do you see any abnormal logs on the Layer 2 switch and nexus switch?

[MHM Cisco World]

this is orphan port that the SW connect to?