We are replacing our EOL Nexus 7K,5K & 2K`s to Nexus 9K switches (core - 93180YC-FX, access - 9348GC-FXP).We have SD-WAN & Internet links from each 7K & we have 2 DWDM links between our 2 Datacentres.We have stretched vlans across both DC`s via the D...