Cisco ACI ESG not showed up in Operational Tab

[QING-QIN]

I am trying to configure a ESG.

Conditions: 

1. EPG operational status is fine ( IP and MAC learned ).

2. ESG created with correct EPG selected. 

3. APIC version 5.2(8g). Spine:  N9K-C9336PQ,version 14.2(7f). Leafs: N9K-C93180YC-FX, version 14.2(7f).

The Operational tab of that ESG is blank. There are nothing in either Faults or History tab.

Am I missing something or there is a compatibility issue? 

Thanks,

[julian.bendix]

Hey! Are there functional Endpoints in the EPG/ESG?

Is this a Lab Setup? Asking because of the Gen1 Spine which is EoL and the Version Gap between APIC and Switches, which is suboptimal ..

[QING-QIN]

Yeah, it is a lab setup. Though EPGs have been working. I am able to ping between EPGs with contract ( standard, vzAny, Preferred_Group, even putting include two EPGs in the same ESG ).