Spine/leaf cabling rules

[p.hruby]

Is it possible to add a new spine into the existing fabric even if the spine is not conected to all leaves? I know this is not a valid design but I'd like to know if this works. Is there a document which describes ACI behaviour when some cables are not connected between spine and leaves? For example when path from a source leaf to a target leaf must go over an another leaf (source leaf - spine1 - leafX - spine2 - target leaf) because of improper (faulty) cabling between source/target leaves and spines.

[chathurangaj@kbsl.lk · Accepted solution]

As per my knowledge you can add the spine as you mentioned. only the thing
is its not recommended way and its working fine.

[Remi Astruc · Accepted solution]

Hi @p.hruby ,

That is totally supported because that is basically the way a Stretched Fabric topology works:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/kb/b_kb-aci-stretched-fabric.html#concept_CCD894AB53B3433C930457088FBFE079

Remi Astruc