Configure Non MLAG Port Channel to Downstream Single Homed L2 Switch

[jrecchia1029]

Enhancement summary

There appears to be a limitation where if an L2 leaf is uplinked to a single L3 leaf but that L3 leaf is part of an MLAG pair, an unnecessary mlag <id> statement gets configured on the L3 leaf under the Port-Channel facing the downstream L2 leaf. This prevents the port-channel from coming up.

We need the ability to check whether or not the downstream neighbor of a device in an MLAG pair is also a downstream neighbor of the MLAG peer so we do not unnecessarily configure mlag <id> under the port-channel.

Which component of AVD is impacted

eos_designs

Use case example

Configuring a L2 port-channel downstream of only a single device in an MLAG pair.

Describe the solution you would like

If a switch is part of an MLAG pair, for each downstream neighbor, check whether or not that neighbor is also a downstream neighbor of the MLAG peer. If it is, configure an mlag id under the port-channel to that neighbor. If it isn't don't configure an mlag id under the port-channel to that neighbor.

Describe alternatives you have considered

No response

Additional context

No response

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