APIC setup - assigning initial fabric ip space

[cowser1979]

Hello -

When we first started setting up the ACI apic last year, it was a recommended best practice (at least from our var) to use the default 10.0.0.0/8 value in the initial apic configuration.  Is that still correct?  or does Cisco recommend that we start assigning a NON overlapping ip space (non overlapping with the client network/underlay)?  also - is there a recommended subnet size?

thank you

[dpita]

Hello

The recommended subnet size is a /16. I don't think it was ever a /8 but i might be mistaken. It has always been recommended to use a non-overlapping ip space for the Infra. 

Hope that helps! Thanks for using support forums

[cowser1979]

Thanks - i could be mistaken on the default subnet size, its been awhile since we have set up a new fabric.  We were unaware of the non-overlapping recommendation, but now we know.  

Thank you for your help.