NewValidation: Check if we have multiple spines in the lldp neighborship for the leaf

[almo-ina]

Validation Type

[ ] - Fault

[ ] - Config

[ ] - Bug

[ ] - Other : connection issue

by mistake, the customer may have a leaf that is single connected to a spine [one or more links to the same spine instead of multiple spines].

What needs to be validated

Check if the leaf has multiple spines showing in the lldp neighbor output.

Why it needs to be validated

should the leaf be single connected to one spine, during the upgrade of that spine, an outage is expected on that leaf.

Additional context

Exmaple:

correct behavior on leaf 236 [notice we have two different spines Spine1 and Spine2 :
APIC1# fabric 236 show lldp neighbors

Node 236 (Leaf236)

Capability codes:
(R) Router, (B) Bridge, (T) Telephone, (C) DOCSIS Cable Device
(W) WLAN Access Point, (P) Repeater, (S) Station, (O) Other
Device ID Local Intf Hold-time Capability Port ID

Spine1 Eth1/49 120 BR Eth2/9
Spine2 Eth1/50 120 BR Eth2/6

Wrong connection as in leaf 235 [notice we have the same spine twice]:

Leaf235# show lldp neighbors
Capability codes:
(R) Router, (B) Bridge, (T) Telephone, (C) DOCSIS Cable Device
(W) WLAN Access Point, (P) Repeater, (S) Station, (O) Other
Device ID Local Intf Hold-time Capability Port ID

Spine2 Eth1/49 120 BR Eth2/8
Spine2 Eth1/50 120 BR Eth2/9